Global Volcanism Program | Volcanoes in the Northwest Pacific Volcanic Regions

Volcanoes in the Northwest Pacific Volcanic Regions

Additional information about the Volcanic Regions and a map display is currently under development.

There are 212 Holocene volcanoes in the Northwest Pacific Volcanic Regions.

Central Kamchatka Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Bolshoi-Kekuknaysky	Russia	5310 BCE	Shield
Alney-Chashakondzha	Russia	1600 CE	Composite
Shisheika	Russia	2240 BCE	Minor (Basaltic)
Kinenin	Russia	850 CE	Minor
Bliznetsy	Russia	1060 BCE	Minor
Terpuk	Russia	800 BCE	Shield
Sedanka Lava Field	Russia	7050 BCE	Cluster
Gorny Institute	Russia	1250 CE	Composite
Titila	Russia	550 BCE	Shield
Elovsky	Russia	7550 BCE	Shield
Nylgimelkin	Russia	3550 BCE	Shield
Spokoiny	Russia	3450 BCE	Composite
Ostry	Russia	2050 BCE	Composite
Severny	Russia	1550 BCE	Shield
Khangar	Russia	1500 CE	Composite
Cherpuk Group	Russia	4550 BCE	Minor
Ichinsky	Russia	1740 CE	Composite

Eastern Kamchatka Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Akademia Nauk	Russia	1996 CE	Composite
Karymsky	Russia	2025 CE	Composite
Maly Semyachik	Russia	1952 CE	Composite
Bolshoi Semiachik	Russia	4450 BCE	Composite
Taunshits	Russia	550 BCE	Composite
Uzon	Russia	200 CE	Caldera
Kikhpinych	Russia	1550 CE	Composite
Krasheninnikov	Russia	1550 CE	Composite
Kronotsky	Russia	1923 CE	Composite
Gamchen	Russia	550 BCE	Composite
Komarov	Russia	950 CE	Composite
Vysoky	Russia	550 BCE	Composite
Kizimen	Russia	2013 CE	Composite
Tolbachik	Russia	2013 CE	Shield
Udina	Russia	Unknown	Composite
Zimina	Russia	Unknown	Composite
Bezymianny	Russia	2025 CE	Composite
Kamen	Russia	Unknown	Composite
Klyuchevskoy	Russia	2025 CE	Composite
Ushkovsky	Russia	1890 CE	Composite
Sheveluch	Russia	2025 CE	Composite
Koryaksky	Russia	2009 CE	Composite
Avachinsky	Russia	2001 CE	Composite
Dzenzursky	Russia	Unknown	Composite
Zhupanovsky	Russia	2016 CE	Composite
Veer	Russia	390 CE	Minor (Basaltic)
Kostakan	Russia	1350 CE	Minor (Basaltic)
Bakening	Russia	550 BCE	Composite
Zavaritsky	Russia	800 BCE	Minor

Kuril Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Tokachidake	Japan	2004 CE	Composite
Taisetsuzan	Japan	1739 CE	Composite
Maruyama	Japan	1898 CE	Composite
Milna	Russia	1914 CE	Composite
Zavaritzki Caldera	Russia	1957 CE	Caldera
Prevo Peak	Russia	1825 CE	Composite
Uratman	Russia	Unknown	Composite
Ketoi	Russia	1960 CE	Composite
Ushishur	Russia	1884 CE	Caldera
Srednii	Russia	Unknown	Composite
Rasshua	Russia	1957 CE	Composite
Sarychev Peak	Russia	2021 CE	Composite
Raikoke	Russia	2019 CE	Composite
Chirinkotan	Russia	2022 CE	Composite
Ekarma	Russia	2010 CE	Composite
Sinarka	Russia	1878 CE	Composite
Kharimkotan	Russia	1933 CE	Composite
Tao-Rusyr Caldera	Russia	1952 CE	Composite
Nemo Peak	Russia	1938 CE	Caldera
Akan	Japan	2008 CE	Caldera
Kussharo	Japan	1320 CE	Caldera
Mashu	Japan	1080 CE	Caldera
Rausudake	Japan	1800 CE	Composite
Tenchozan	Japan	Unknown	Cluster
Shiretoko-Iozan	Japan	1936 CE	Composite
Rishirizan	Japan	5830 BCE	Composite
Shirinki	Russia	Unknown	Composite
Fuss Peak	Russia	1854 CE	Composite
Karpinsky Group	Russia	1952 CE	Composite
Chikurachki	Russia	2023 CE	Composite
Vernadskii Ridge	Russia	Unknown	Minor
Ebeko	Russia	2024 CE	Composite
Alaid	Russia	2022 CE	Composite
Kambalny	Russia	2017 CE	Composite
Koshelev	Russia	1690 CE	Composite
Yavinsky	Russia	4050 BCE	Composite
Diky Greben	Russia	350 CE	Minor (Silicic)
Kurile Lake	Russia	6440 BCE	Caldera
Iliinsky	Russia	1901 CE	Composite
Zheltovsky	Russia	1923 CE	Composite
Ksudach	Russia	1907 CE	Caldera
Olkoviy Volcanic Group	Russia	Unknown	Cluster
Khodutka	Russia	300 BCE	Composite
Asacha	Russia	Unknown	Composite
Visokiy	Russia	Unknown	Cluster
Mutnovsky	Russia	2000 CE	Composite
Gorely	Russia	2010 CE	Composite
Opala	Russia	1776 CE	Composite
Tolmachev Dol	Russia	300 CE	Cluster
Vilyuchinsky	Russia	8050 BCE	Composite
Barkhatnaya Sopka	Russia	3550 BCE	Cluster
Tomariyama [Golovnin]	Japan - administered by Russia	1848 CE	Caldera
Raususan [Mendeleev]	Japan - administered by Russia	1880 CE	Composite
Ruruidake [Smirnov]	Japan - administered by Russia	Unknown	Composite
Chachadake [Tiatia]	Japan - administered by Russia	1981 CE	Composite
Berutarubesan [Berutarube]	Japan - administered by Russia	Unknown	Composite
Moekeshiwan [Lvinaya Past]	Japan - administered by Russia	7480 BCE	Caldera
Etorofu-Atosanupuri [Atosanupuri]	Japan - administered by Russia	1932 CE	Composite
Hitokappu Volcano Group [Bogatyr Ridge]	Japan - administered by Russia	Unknown	Cluster
Unnamed	Japan - administered by Russia	Unknown	Composite
Etorofu-Yakeyama [Grozny Group]	Japan - administered by Russia	2013 CE	Composite
Odamoisan [Tebenkov]	Japan - administered by Russia	Unknown	Composite
Sashiusudake [Baransky]	Japan - administered by Russia	1951 CE	Composite
Chirippusan [Chirip]	Japan - administered by Russia	1860 CE	Composite
Moyorodake [Medvezhia]	Japan - administered by Russia	1999 CE	Composite
Rakkibetsudake [Demon]	Japan - administered by Russia	Unknown	Composite
Ivao Group	Russia	Unknown	Cluster
Rudakov	Russia	Unknown	Composite
Tri Sestry	Russia	Unknown	Composite
Kolokol Group	Russia	1973 CE	Composite
Chirpoi	Russia	2016 CE	Composite
Unnamed	Russia	1972 CE	Composite

Northeast Japan Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Yokodake	Japan	1200 CE	Composite
Niigata-Yakeyama	Japan	1998 CE	Minor (Silicic)
Myokosan	Japan	750 BCE	Composite
Asamayama	Japan	2019 CE	Composite
Kusatsu-Shiranesan	Japan	2018 CE	Composite
Shiga	Japan	Unknown	Shield
Harunasan	Japan	550 CE	Composite
Akagisan	Japan	Unknown	Composite
Hiuchigatake	Japan	1544 CE	Composite
Nikko-Shiranesan	Japan	1952 CE	Shield
Nantaisan	Japan	9540 BCE	Composite
Omanago Group	Japan	3050 BCE	Cluster
Takaharayama	Japan	4570 BCE	Composite
Nasudake	Japan	1963 CE	Composite
Numazawa	Japan	3400 BCE	Shield
Bandaisan	Japan	1888 CE	Composite
Adatarayama	Japan	1996 CE	Composite
Azumayama	Japan	1977 CE	Composite
Zaozan [Zaosan]	Japan	1940 CE	Composite
Hijiori	Japan	Unknown	Caldera
Naruko	Japan	837 CE	Cluster
Kurikomayama	Japan	1950 CE	Composite
Chokaisan	Japan	1974 CE	Composite
Akita-Komagatake	Japan	1971 CE	Composite
Iwatesan	Japan	1919 CE	Composite
Hachimantai	Japan	5350 BCE	Composite
Akita-Yakeyama	Japan	1997 CE	Composite
Megata	Japan	2050 BCE	Minor (Basaltic)
Iwakisan	Japan	1863 CE	Composite
Towada	Japan	915 CE	Caldera
Hakkodasan	Japan	1550 CE	Composite
Osorezan	Japan	1787 CE	Composite
Oshima-Oshima	Japan	1790 CE	Composite
Esan	Japan	1874 CE	Minor (Silicic)
Hokkaido-Komagatake	Japan	2000 CE	Composite
Toya	Japan	2001 CE	Composite
Niseko	Japan	4900 BCE	Composite
Yoteizan	Japan	1050 BCE	Composite
Kuttara	Japan	1820 CE	Composite
Shikotsu	Japan	1981 CE	Caldera

Izu Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Izu-Oshima	Japan	1990 CE	Composite
Toshima	Japan	4550 BCE	Composite
Niijima	Japan	886 CE	Minor (Silicic)
Kozushima	Japan	838 CE	Composite
Miyakejima	Japan	2010 CE	Composite
Mikurajima	Japan	4100 BCE	Composite
Kurose Hole	Japan	Unknown	Caldera
Hachijojima	Japan	1606 CE	Composite
Izu-Tobu	Japan	1989 CE	Cluster
Hakoneyama	Japan	2015 CE	Composite
Fujisan	Japan	1708 CE	Composite
Aogashima	Japan	1785 CE	Composite
Kita-Bayonnaise	Japan	Unknown	Caldera
Myojinsho	Japan	1970 CE	Caldera
Sumisujima	Japan	1916 CE	Caldera
Izu-Torishima	Japan	2002 CE	Composite
Sofugan	Japan	Unknown	Composite

Ogasawara Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Suiyo Seamount	Japan	Unknown	Composite
Mokuyo Seamount	Japan	Unknown	Composite
Doyo Seamount	Japan	Unknown	Composite
Nishinoshima	Japan	2023 CE	Caldera
Kaikata Seamount	Japan	Unknown	Composite
Kaitoku Seamount	Japan	2023 CE	Composite
Kita-Ioto	Japan	2022 CE	Composite
Ioto	Japan	2024 CE	Caldera
Kita-Fukutokutai	Japan	1954 CE	Composite
Fukutoku-Oka-no-Ba	Japan	2021 CE	Composite

Mariana Volcanic Arc

Volcano Name	Country	Last Eruption	Volcanic Landform
Farallon de Pajaros	United States	1953 CE	Composite
Ahyi	United States	2025 CE	Composite
Supply Reef	United States	Unknown	Composite
Maug Islands	United States	Unknown	Composite
Asuncion	United States	1906 CE	Composite
Agrigan	United States	1917 CE	Composite
Pagan	United States	2021 CE	Composite
Alamagan	United States	870 CE	Composite
Guguan	United States	1883 CE	Composite
Zealandia Bank	United States	Unknown	Composite
Sarigan	United States	Unknown	Composite
South Sarigan Seamount	United States	2010 CE	Composite
Anatahan	United States	2008 CE	Composite
Mariana Back-Arc Segment at 15.5°N	United States	2015 CE	Cluster
Minami-Hiyoshi	Japan	1975 CE	Composite
Nikko	Japan	Unknown	Composite
Fukujin	United States	1974 CE	Composite
Kasuga 1	United States	1959 CE	Composite
Kasuga 2	United States	Unknown	Composite
NW Eifuku	United States	Unknown	Composite
Daikoku	United States	Unknown	Composite
East Diamante	United States	Unknown	Composite
Ruby	United States	2023 CE	Composite
Esmeralda Bank	United States	Unknown	Composite
NW Rota-1	United States	2010 CE	Composite
Forecast Seamount	United States	Unknown	Composite
Seamount X	United States	Unknown	Composite

Chronological listings of known Holocene eruptions (confirmed or uncertain) from volcanoes in the Northwest Pacific Volcanic Regions. Bolded eruptions indicate current continuing activity as of 2 May 2025.

Central Kamchatka Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Ichinsky	1740	Unknown	Confirmed	Observations: Reported
Alney-Chashakondzha	1600 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Khangar	1500 ± 40 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ichinsky	1300 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorny Institute	1250 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Gorny Institute	1000 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Khangar	1000 ± 16 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kinenin	0850 ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ichinsky	0800 ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ichinsky	0550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ichinsky	0050 ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Khangar	0350 BCE ± 30 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Titila	0550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ichinsky	0600 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Alney-Chashakondzha	0650 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Alney-Chashakondzha	0660 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Terpuk	0800 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bliznetsy	1060 BCE ± 40 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ichinsky	1200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Severny	1550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ichinsky	1950 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ostry	2050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Shisheika	2240 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Khangar	2700 BCE ± 25 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ichinsky	2850 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Spokoiny	3450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Nylgimelkin	3550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Gorny Institute	4250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Cherpuk Group	4550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bolshoi-Kekuknaysky	5310 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ichinsky	5400 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Khangar	5500 BCE ± 25 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ichinsky	5650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Khangar	5700 BCE ± 16 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ichinsky	5850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ichinsky	6150 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Khangar	6400 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ichinsky	6950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sedanka Lava Field	7050 BCE ± 1000 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Khangar	7100 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Elovsky	7550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Khangar	8250 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Khangar	9500 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)

Eastern Kamchatka Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Karymsky	2025 Apr 30	2025 May 2 (continuing)	Confirmed	Observations: Reported
Klyuchevskoy	2025 Apr 8	2025 May 2 (continuing)	Confirmed	Observations: Reported
Bezymianny	2024 Dec 24	2025 May 2 (continuing)	Confirmed	Observations: Satellite (infrared)
Karymsky	2024 Jun 20	2024 Nov 12	Confirmed	Observations: Reported
Klyuchevskoy	2023 Jun 22	2023 Dec 31	Confirmed	Observations: Reported
Klyuchevskoy	2022 Nov 17	2022 Nov 25 (?)	Confirmed	Observations: Reported
Bezymianny	2022 Mar 15	2024 Aug 14 ± 2 days	Confirmed	Observations: Reported
Karymsky	2020 Apr 1	2022 Aug 7	Confirmed	Observations: Reported
Klyuchevskoy	2019 Apr 9	2021 Mar 20	Confirmed	Observations: Reported
Karymsky	2019 Feb 16	2019 Sep 24	Confirmed	Observations: Reported
Karymsky	2017 Jun 4	2018 Sep 30	Confirmed	Observations: Reported
Bezymianny	2016 Dec 5	2021 Feb 1 ± 15 days	Confirmed	Observations: Reported
Zhupanovsky	2016 Nov 20	2016 Nov 20	Confirmed	Observations: Reported
Karymsky	2016 Oct 5	2016 Oct 8	Confirmed	Observations: Reported
Zhupanovsky	2015 Nov 28	2016 Mar 25	Confirmed	Observations: Reported
Klyuchevskoy	2015 Aug 28	2018 Jul 14	Confirmed	Observations: Reported
Klyuchevskoy	2015 Jan 1	2015 May 10	Confirmed	Observations: Reported
Bezymianny	[2014 Jun 12]	[2014 Aug 29]	Uncertain
Zhupanovsky	2014 Jun 6	2015 Aug 6	Confirmed	Observations: Reported
Zhupanovsky	2013 Oct 23	2013 Oct 26	Confirmed	Observations: Reported
Klyuchevskoy	2013 Aug 15	2013 Dec 20	Confirmed	Observations: Reported
Tolbachik	2012 Nov 27	2013 Sep 5 ± 10 days	Confirmed	Observations: Reported
Klyuchevskoy	2012 Sep 1 (?)	2013 Jan 28 ± 3 days	Confirmed	Observations: Reported
Bezymianny	2012 Feb 12	2013 Jun 20	Confirmed	Observations: Reported
Klyuchevskoy	[2011 Nov 2]	[2011 Nov 2]	Uncertain
Bezymianny	[2011 Sep 6]	[2011 Oct 26]	Uncertain
Klyuchevskoy	2011 Mar 30	2011 Jul 3	Confirmed	Observations: Reported
Kizimen	2010 Nov 11	2013 Sep 13 (?)	Confirmed	Observations: Reported
Bezymianny	2010 May 21	2011 Apr 29	Confirmed	Observations: Satellite (infrared)
Bezymianny	2009 Dec 17	2010 Feb 16 (?)	Confirmed	Observations: Reported
Klyuchevskoy	2009 Aug 1 (?)	2010 Dec 20 (?)	Confirmed	Observations: Reported
Koryaksky	2008 Dec 23 (?)	2009 Aug 27	Confirmed	Observations: Reported
Klyuchevskoy	2008 Oct 8	2009 Apr 16 (?)	Confirmed	Observations: Reported
Bezymianny	2008 Jul 11	2008 Aug 23 (?)	Confirmed	Observations: Reported
Bezymianny	2007 May 10 (?)	2007 Dec 24 (?)	Confirmed	Observations: Reported
Klyuchevskoy	2007 Feb 15	2007 Jul 15	Confirmed	Observations: Reported
Bezymianny	2006 Apr 16 (on or before) ± 15 days	2006 Dec 29 (?)	Confirmed	Observations: Reported
Bezymianny	2005 Nov 29 (?)	2005 Dec 1 (on or after)	Confirmed	Observations: Reported
Klyuchevskoy	2005 Jan 20 (on or before)	2005 Apr 7	Confirmed	Observations: Reported
Klyuchevskoy	2004 Sep 15	2004 Sep 15	Confirmed	Observations: Reported
Bezymianny	2004 Jan 14	2005 Feb 16 (?) ± 15 days	Confirmed	Observations: Reported
Bezymianny	2003 Jul 26	2003 Aug 1 (?)	Confirmed	Observations: Reported
Bezymianny	2002 Dec 25	2002 Dec 28 (?)	Confirmed	Observations: Reported
Klyuchevskoy	2002 Nov 24	2004 Apr 8	Confirmed	Observations: Reported
Klyuchevskoy	2002 Apr 9	2002 Jun 9 (on or before)	Confirmed	Observations: Reported
Bezymianny	2001 Dec 10	2002 Jan 6 (?)	Confirmed	Observations: Reported
Karymsky	2001 Nov 15	2016 Apr 1	Confirmed	Observations: Reported
Avachinsky	2001 Oct 5	2001 Oct 5	Confirmed	Observations: Reported
Bezymianny	2001 Jul 23 (?)	2001 Aug 10 (?)	Confirmed	Observations: Reported
Klyuchevskoy	2000 Jul 28	2000 Sep 22	Confirmed	Observations: Reported
Bezymianny	2000 Jul 18	2000 Nov 4 (on or after)	Confirmed	Observations: Reported
Bezymianny	2000 Mar 14	2000 Mar 26 ± 1 days	Confirmed	Observations: Reported
Klyuchevskoy	2000 Feb 3	2000 Feb 8 (?)	Confirmed	Observations: Reported
Sheveluch	1999 Aug 15	2025 May 2 (continuing)	Confirmed	Observations: Reported
Sheveluch	1999 Apr 3	1999 Apr 12	Confirmed	Observations: Reported
Bezymianny	1999 Feb 25	1999 Feb 25	Confirmed	Observations: Reported
Klyuchevskoy	1999 Feb 5	1999 Jul 12	Confirmed	Observations: Reported
Klyuchevskoy	1998 Jul 23	1998 Sep 2 (?)	Confirmed	Observations: Reported
Bezymianny	1998 Jun 20 (?)	1998 Jun 22 (?)	Confirmed	Observations: Reported
Sheveluch	1998 May 30	1998 Sep 3	Confirmed	Observations: Reported
Bezymianny	1997 Dec 5	1997 Dec 6	Confirmed	Observations: Reported
Klyuchevskoy	1997 Sep 7	1997 Sep 26	Confirmed	Observations: Reported
Bezymianny	1997 May 8	1997 May 16 (?)	Confirmed	Observations: Reported
Sheveluch	1997 Mar 8	1997 Apr 4	Confirmed	Observations: Reported
Klyuchevskoy	1996 Nov 14	1997 Mar 20 ± 12 days	Confirmed	Observations: Reported
Bezymianny	1996 Jul 23 (?)	1996 Sep 1	Confirmed	Observations: Reported
Akademia Nauk	1996 Jan 2	1996 Jan 3	Confirmed	Observations: Reported
Karymsky	1996 Jan 2	2000 Dec 20 (?)	Confirmed	Observations: Reported
Bezymianny	1995 Sep 16 (on or before) ± 15 days	1995 Oct 8 (?)	Confirmed	Observations: Reported
Klyuchevskoy	1994 Sep 8	1995 Jan 14 (on or after)	Confirmed	Observations: Reported
Bezymianny	1994 Jul 7	1994 Oct 5 ± 4 days	Confirmed	Observations: Reported
Bezymianny	1993 Oct 21	1994 Feb 4 ± 4 days	Confirmed	Observations: Reported
Klyuchevskoy	1992 Sep 12	1993 Sep 12 ± 1 days	Confirmed	Observations: Reported
Bezymianny	1992 Mar 12	1992 Jun 12	Confirmed	Observations: Reported
Klyuchevskoy	1992 Jan 25	1992 May 25 (?)	Confirmed	Observations: Reported
Klyuchevskoy	1991 Apr 8	1991 Jun 24 (?)	Confirmed	Observations: Reported
Avachinsky	1991 Jan 13	1991 Jan 30	Confirmed	Observations: Reported
Bezymianny	1990 Jan 29	1991 Nov 29	Confirmed	Observations: Reported
Sheveluch	1990 Jan 10	1995 Feb 16 ± 15 days	Confirmed	Observations: Reported
Bezymianny	1989 Aug 1	1989 Aug 4	Confirmed	Observations: Reported
Sheveluch	1989 Apr 7	1989 Jun 26	Confirmed	Observations: Reported
Sheveluch	1988 Dec 7	1988 Dec 7	Confirmed	Observations: Reported
Bezymianny	1986 Dec 5 ± 4 days	1988 Jul 26 ± 5 days	Confirmed	Observations: Reported
Klyuchevskoy	1986 Nov 27	1990 Sep 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1986 Jun 8	1986 Jul 11	Confirmed	Observations: Reported
Sheveluch	1986 Mar 28	1988 Feb 28	Confirmed	Observations: Reported
Bezymianny	1986 Mar 26 ± 5 days	1986 Jun 29	Confirmed	Observations: Reported
Klyuchevskoy	1985 Aug 16	1986 Jan 21	Confirmed	Observations: Reported
Bezymianny	1985 Jun 12	1985 Dec 14	Confirmed	Observations: Reported
Sheveluch	1985 May 26	1985 Oct 25	Confirmed	Observations: Reported
Sheveluch	1984 Mar 17	1984 Sep 6	Confirmed	Observations: Reported
Klyuchevskoy	1984 Mar 10	1985 Jan 28	Confirmed	Observations: Reported
Bezymianny	1984 Feb 5	1984 Dec 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1982 Oct 7	1983 Jun 27	Confirmed	Observations: Reported
Klyuchevskoy	1982 Mar 24	1982 May 2	Confirmed	Observations: Reported
Klyuchevskoy	[1981 Dec 21]	[Unknown]	Uncertain
Bezymianny	1981 Jun 12	1983 May 22	Confirmed	Observations: Reported
Klyuchevskoy	1981 Jan 25	1981 Aug 4 (?)	Confirmed	Observations: Reported
Sheveluch	1980 Aug 23	1981 Dec 1 ± 30 days	Confirmed	Observations: Reported
Bezymianny	1980 Aug 21	1980 Aug 27 ± 4 days	Confirmed	Observations: Reported
Bezymianny	1980 Apr 18	1980 Apr 19	Confirmed	Observations: Reported
Bezymianny	1979 Sep 18	Unknown	Confirmed	Observations: Reported
Bezymianny	1979 Feb 11	Unknown	Confirmed	Observations: Reported
Bezymianny	1978 Sep 8 ± 30 days	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1977 Aug 2	1980 Mar 12	Confirmed	Observations: Reported
Bezymianny	1977 Mar 25	Unknown	Confirmed	Observations: Reported
Bezymianny	1976 Mar 25	Unknown	Confirmed	Observations: Reported
Tolbachik	1975 Jun 28	1976 Dec 10	Confirmed	Observations: Reported
Klyuchevskoy	1974 Apr 8	1974 Dec 16 (?) ± 15 days	Confirmed	Observations: Reported
Tolbachik	[1973 Oct 16 ± 15 days]	[1974 Dec 16 ± 15 days]	Uncertain
Klyuchevskoy	1971 Nov 16 ± 15 days	1973 Dec 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1971 Jun 16 ± 15 days	1971 Jul 16 ± 15 days	Confirmed	Observations: Reported
Bezymianny	1971 Mar 16 ± 15 days	1974 Dec 16 (on or after) ± 15 days	Confirmed	Observations: Reported
Tolbachik	1970 Sep 16 ± 15 days	1970 Dec 1 ± 30 days	Confirmed	Observations: Reported
Klyuchevskoy	1970 May 26	1970 Dec 27	Confirmed	Observations: Reported
Karymsky	1970 May 11	1982 Oct 11	Confirmed	Observations: Reported
Tolbachik	1970 Jan 16 ± 15 days	1970 Apr 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1969 Sep 16 ± 15 days	1969 Dec 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1968 Jul 3	1968 Jul 3	Confirmed	Observations: Reported
Tolbachik	1968 Jul 2 ± 182 days	1969 Jul 2 ± 182 days	Confirmed	Observations: Reported
Karymsky	1967 Nov 16 ± 15 days	1967 Nov 16 ± 15 days	Confirmed	Observations: Reported
Tolbachik	1967 Oct 16 ± 15 days	1967 Nov 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1967 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Tolbachik	1967 Mar 16 ± 15 days	1967 May 16 ± 15 days	Confirmed	Observations: Reported
Tolbachik	1966 Apr 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1965 Aug 16 ± 15 days	1966 Dec 26	Confirmed	Observations: Reported
Tolbachik	1965 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Karymsky	1965 May 15 ± 5 days	1967 Feb 16 ± 15 days	Confirmed	Observations: Reported
Bezymianny	1965 Mar 9	1970 Mar 16 ± 15 days	Confirmed	Observations: Reported
Bezymianny	1964 Dec 25	1964 Dec 26	Confirmed	Observations: Reported
Sheveluch	1964 Nov 12	1964 Nov 12	Confirmed	Observations: Reported
Bezymianny	1964 Jun 25	1964 Sep 20	Confirmed	Observations: Reported
Tolbachik	1964 Mar 16 ± 15 days	1964 Apr 24 (on or after)	Confirmed	Observations: Reported
Klyuchevskoy	1963 Nov 13	1964 Dec 16 (?) ± 15 days	Confirmed	Observations: Reported
Bezymianny	1963 May 16 ± 15 days	1963 Sep 16 (?) ± 15 days	Confirmed	Observations: Reported
Bezymianny	1962 Oct 21	1962 Nov 6	Confirmed	Observations: Reported
Tolbachik	1962 Aug 16 ± 15 days	1963 Jul 2 ± 182 days	Confirmed	Observations: Reported
Bezymianny	1961 Oct 18	1961 Dec 15	Confirmed	Observations: Reported
Bezymianny	1961 May 21	1961 Jun 6	Confirmed	Observations: Reported
Bezymianny	1961 Mar 25	1961 Mar 26	Confirmed	Observations: Reported
Tolbachik	1961 Mar 24	1962 Feb 16 (on or after)	Confirmed	Observations: Reported
Klyuchevskoy	1960 Dec 16 ± 15 days	1963 Mar 22 (on or after)	Confirmed	Observations: Reported
Karymsky	1960 Apr 16 ± 15 days	1964 Dec 16 ± 15 days	Confirmed	Observations: Reported
Bezymianny	1960 Apr 13	1960 Apr 14	Confirmed	Observations: Reported
Bezymianny	1959 Oct 15	1959 Nov 4 (?)	Confirmed	Observations: Reported
Tolbachik	1959 Jul 2 ± 182 days	1960 Jul 2 ± 182 days	Confirmed	Observations: Reported
Zhupanovsky	1959 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1959 Jan 3	Unknown	Confirmed	Observations: Reported
Bezymianny	1958 Dec 28	1959 Mar 30	Confirmed	Observations: Reported
Tolbachik	1958 Jul 13 (on or before)	Unknown	Confirmed	Observations: Reported
Bezymianny	1958 May 21	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1958 May 18	1958 Aug 18 (on or after)	Confirmed	Observations: Reported
Bezymianny	1958 Jan 16 ± 15 days	1958 Feb 14	Confirmed	Observations: Reported
Bezymianny	1957 Jul 31	1957 Jul 31	Confirmed	Observations: Reported
Klyuchevskoy	1957 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Zhupanovsky	1956 Dec 27	1957 Jun 16 ± 15 days	Confirmed	Observations: Reported
Koryaksky	1956 Dec 16 ± 15 days	1957 Jun 16 ± 15 days	Confirmed	Observations: Reported
Tolbachik	1956 Sep 28	1957 Nov 28	Confirmed	Observations: Reported
Karymsky	1956 Mar 16 ± 15 days	1957 Feb 16 ± 15 days	Confirmed	Observations: Reported
Klyuchevskoy	1956 Jan 16 ± 15 days	1956 Aug 2	Confirmed	Observations: Reported
Bezymianny	1955 Oct 22	1957 Mar 1	Confirmed	Observations: Reported
Tolbachik	1955 Oct 6	1955 Dec 8	Confirmed	Observations: Reported
Karymsky	1955 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Tolbachik	1955 Jan 7	1955 Feb 9	Confirmed	Observations: Reported
Klyuchevskoy	1954 May 28	1954 Sep 16 ± 15 days	Confirmed	Observations: Reported
Tolbachik	1954 Feb 21	1954 Jun 13	Confirmed	Observations: Reported
Karymsky	1953 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1953 Jun 7	1953 Jun 25	Confirmed	Observations: Reported
Maly Semyachik	1952 Dec 5 ± 4 days	Unknown	Confirmed	Observations: Reported
Karymsky	1952 Nov 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1951 Nov 19	1951 Nov 30	Confirmed	Observations: Reported
Klyuchevskoy	1949 May	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1948 Aug	Unknown	Confirmed	Observations: Reported
Karymsky	1947 Apr	Unknown	Confirmed	Observations: Reported
Tolbachik	1947 Jan	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1946 Oct 23	1946 Nov 22 (?)	Confirmed	Observations: Reported
Karymsky	1946 Sep	1946 Oct	Confirmed	Observations: Reported
Karymsky	1946 Apr	Unknown	Confirmed	Observations: Reported
Karymsky	1945 Sep	Unknown	Confirmed	Observations: Reported
Maly Semyachik	1945 Sep (?)	1946 Apr 15 ± 45 days	Confirmed	Observations: Reported
Klyuchevskoy	1945 Jun 19	1945 Jul 7	Confirmed	Observations: Reported
Avachinsky	1945 Feb 25	1945 Feb 25	Confirmed	Observations: Reported
Klyuchevskoy	1944 Dec 9	1945 Jan 20 (on or after)	Confirmed	Observations: Reported
Sheveluch	1944 Nov 5	1950 Apr 6	Confirmed	Observations: Reported
Karymsky	1943 Feb 1 ± 30 days	Unknown	Confirmed	Observations: Reported
Tolbachik	1940 Nov	1941 Jul 15 ± 45 days	Confirmed	Observations: Reported
Tolbachik	1940 Feb	1940 Apr	Confirmed	Observations: Reported
Zhupanovsky	1940 Jan	1940 Feb	Confirmed	Observations: Reported
Karymsky	1940	Unknown	Confirmed	Observations: Reported
Tolbachik	1939 Sep 25	1939 Sep 27	Confirmed	Observations: Reported
Karymsky	1938 Oct	Unknown	Confirmed	Observations: Reported
Avachinsky	1938 Mar 6	1938 Dec 1 (on or after)	Confirmed	Observations: Reported
Klyuchevskoy	1937 Apr 3	1939 Mar	Confirmed	Observations: Reported
Tolbachik	1936 Aug 13 (on or before)	1937 Mar 2	Confirmed	Observations: Reported
Klyuchevskoy	1935 Apr 21	1936 Nov 4 (on or after)	Confirmed	Observations: Reported
Karymsky	1934 Nov	1935 Feb	Confirmed	Observations: Reported
Karymsky	1933 Sep	1933 Oct	Confirmed	Observations: Reported
Karymsky	1932 Jun	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1932 Jan 25	1932 Dec 26 ± 5 days	Confirmed	Observations: Reported
Klyuchevskoy	1931 Aug	1931 Sep	Confirmed	Observations: Reported
Klyuchevskoy	1931 Mar 25	1931 Mar 27	Confirmed	Observations: Reported
Tolbachik	1931 Mar 4	1932	Confirmed	Observations: Reported
Sheveluch	1930 Feb 1 ± 30 days	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1929 Jun	1929 Sep	Confirmed	Observations: Reported
Karymsky	1929	Unknown	Confirmed	Observations: Reported
Zhupanovsky	1929	Unknown	Confirmed	Observations: Reported
Sheveluch	1928 Jan 27	1929 Apr 15 ± 45 days	Confirmed	Observations: Reported
Kizimen	1927 Dec	1928 Jan	Confirmed	Observations: Reported
Koryaksky	1926 Dec 22	1926 Dec 22	Confirmed	Observations: Reported
Avachinsky	1926 Mar 27	1927 Mar 14 (?)	Confirmed	Observations: Reported
Klyuchevskoy	1926 Mar 23	1926 Apr 7	Confirmed	Observations: Reported
Karymsky	1925 Jul	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1925 Apr 4	1925 Oct 10	Confirmed	Observations: Reported
Zhupanovsky	1925	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1923 Aug	1923 Sep	Confirmed	Observations: Reported
Karymsky	1923 Feb	Unknown	Confirmed	Observations: Reported
Kronotsky	1923 Feb	Unknown	Confirmed	Observations: Reported
Kronotsky	1922 Nov	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1922 May	Unknown	Confirmed	Observations: Reported
Karymsky	1921 Sep	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1915 Jan	Unknown	Confirmed	Observations: Reported
Karymsky	1915	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1913 Jan	Unknown	Confirmed	Observations: Reported
Karymsky	1912 Jan	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1911 Nov	Unknown	Confirmed	Observations: Reported
Karymsky	1911	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1910 Aug	Unknown	Confirmed	Observations: Reported
Avachinsky	[1910]	[Unknown]	Uncertain
Avachinsky	1909 Aug	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1909 Jun	Unknown	Confirmed	Observations: Reported
Karymsky	1908	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1907 Aug	Unknown	Confirmed	Observations: Reported
Sheveluch	1905	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1904 Jan 31 ± 30 days	1904 Jun 14 (on or after)	Confirmed	Observations: Reported
Tolbachik	1904	Unknown	Confirmed	Observations: Reported
Avachinsky	1901 Jul 7	1901 Jul 13	Confirmed	Observations: Reported
Klyuchevskoy	1898 Feb 20	Unknown	Confirmed	Observations: Reported
Sheveluch	1897	1898	Confirmed	Observations: Reported
Klyuchevskoy	1896 Dec	1897 Nov	Confirmed	Observations: Reported
Avachinsky	1894 Oct	1895 Feb	Confirmed	Observations: Reported
Klyuchevskoy	1890 Apr	Unknown	Confirmed	Observations: Reported
Ushkovsky	1890 Apr	Unknown	Confirmed	Observations: Reported
Koryaksky	1890 ± 3 years	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1883 Jul	1883 Aug	Confirmed	Observations: Reported
Klyuchevskoy	1882 Sep	Unknown	Confirmed	Observations: Reported
Zhupanovsky	1882	Unknown	Confirmed	Observations: Reported
Avachinsky	1881	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1879	Unknown	Confirmed	Observations: Reported
Sheveluch	1879	1883	Confirmed	Observations: Reported
Klyuchevskoy	1878 Sep	Unknown	Confirmed	Observations: Reported
Avachinsky	1878	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1877	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1865 Sep	Unknown	Confirmed	Observations: Reported
Avachinsky	1855 May 28	1855 Sep 4 ± 4 days	Confirmed	Observations: Reported
Karymsky	1854 Sep	Unknown	Confirmed	Observations: Reported
Avachinsky	1854 Aug 13	Unknown	Confirmed	Observations: Reported
Sheveluch	1854 Feb 18	Unknown	Confirmed	Observations: Reported
Avachinsky	1853 Dec 21	1854 Mar 14	Confirmed	Observations: Reported
Klyuchevskoy	1853 Oct	1854 Feb 17	Confirmed	Observations: Reported
Klyuchevskoy	1852 Aug	Unknown	Confirmed	Observations: Reported
Maly Semyachik	1852 Apr 15 ± 45 days	1852 Jul	Confirmed	Observations: Reported
Klyuchevskoy	1852 Feb	1852 Mar	Confirmed	Observations: Reported
Karymsky	1852	Unknown	Confirmed	Observations: Reported
Avachinsky	1851 Nov 26	1852 Feb 14 ± 4 days	Confirmed	Observations: Reported
Maly Semyachik	1851 Sep	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1848	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1840	Unknown	Confirmed	Observations: Reported
Avachinsky	[1837]	[Unknown]	Uncertain
Karymsky	1830	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1829 Sep 9	Unknown	Confirmed	Observations: Reported
Avachinsky	1828 Apr 17	Unknown	Confirmed	Observations: Reported
Avachinsky	1827 Jun 27	1827 Jun 29	Confirmed	Observations: Reported
Klyuchevskoy	1819	1822 (?)	Confirmed	Observations: Reported
Klyuchevskoy	1813 Feb	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1812 Sep	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1807 Feb 1 ± 30 days	Unknown	Confirmed	Observations: Reported
Maly Semyachik	1804	Unknown	Confirmed	Observations: Reported
Sheveluch	[1800 ± 10 years]	[Unknown]	Uncertain
Tolbachik	1793	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1791 Aug	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1791 Apr	Unknown	Confirmed	Observations: Reported
Tolbachik	1790	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1789 Dec 1	1790 Feb	Confirmed	Observations: Reported
Tolbachik	1789	Unknown	Confirmed	Observations: Reported
Avachinsky	[1789]	[Unknown]	Uncertain
Klyuchevskoy	1788 Aug	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1788 Feb	Unknown	Confirmed	Observations: Reported
Tolbachik	1788	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1787 Sep	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1785 Nov	Unknown	Confirmed	Observations: Reported
Avachinsky	1779 Jun 15	1779 Jun 16	Confirmed	Observations: Reported
Zhupanovsky	1776 Oct	Unknown	Confirmed	Observations: Reported
Avachinsky	1772	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1772	Unknown	Confirmed	Observations: Reported
Karymsky	1771	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1770 May	Unknown	Confirmed	Observations: Reported
Tolbachik	1769 Feb 15 ± 45 days	1769 Oct 15 ± 45 days	Confirmed	Observations: Reported
Klyuchevskoy	1767	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1762	Unknown	Confirmed	Observations: Reported
Tolbachik	1740 Dec	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1740	Unknown	Confirmed	Observations: Reported
Tolbachik	1739 Feb 1 ± 30 days	Unknown	Confirmed	Observations: Reported
Sheveluch	1739	Unknown	Confirmed	Observations: Reported
Klyuchevskoy	1737 Sep 25 (?)	1737 Nov 4 (?)	Confirmed	Observations: Reported
Avachinsky	1737 Aug	1737 Aug	Confirmed	Observations: Reported
Karymsky	1730 ± 25 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Klyuchevskoy	1727	1731	Confirmed	Observations: Reported
Klyuchevskoy	1720	1721	Confirmed	Observations: Reported
Sheveluch	1700 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	[1699 ± 1 years]	[Unknown]	Uncertain
Klyuchevskoy	1697	1698	Confirmed	Observations: Reported
Sheveluch	1652 ± 11 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	1550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	1550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kikhpinych	1550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	1550 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	1550 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	1550 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	1550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	1450 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	1430 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	1400 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	1400 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kostakan	1350 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kikhpinych	1350 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Krasheninnikov	1350 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	1200 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kostakan	1200 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	1150 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	1150 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	1100 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	1050 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	1050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	1034 ± 23 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	1020 (?) ± 40 years	Unknown	Confirmed	Correlation: Tephrochronology
Zhupanovsky	1000 ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Kostakan	1000 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	1000 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0970 (?) ± 80 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	0950 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Komarov	0950 (in or after)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bezymianny	0950 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	0950 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	0900 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kikhpinych	0900 ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Tolbachik	0900 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	0850 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kizimen	0850 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	0850 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kikhpinych	0830 ± 25 years	Unknown	Confirmed	Correlation: Tephrochronology
Kostakan	0800 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	0750 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0750 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kizimen	0700 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	0700 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	0700 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0700 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	0650 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kikhpinych	0650 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	0650 ± 40 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0630 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	0600 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0600 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0580 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Klyuchevskoy	0550 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kikhpinych	0550 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	0550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0530 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0500 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	0450 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Komarov	0450 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Tolbachik	0400 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	0400 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Veer	0390 ± 75 years	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0380 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	0350 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kizimen	0350 ± 75 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Tolbachik	0250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	0250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0230 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Uzon	0200 ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0170 ± 20 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bezymianny	0150 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	0150 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0120 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0100 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	0100 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	0050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	0050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0010 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kronotsky	0050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zhupanovsky	0050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	0100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	0150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	0200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zhupanovsky	0220 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Krasheninnikov	0250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0300 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	0350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0400 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	0450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0500 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gamchen	0550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Vysoky	0550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bakening	0550 BCE	Unknown	Confirmed	Correlation: Tephrochronology
Taunshits	0550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Maly Semyachik	0550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	0650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	0650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	0700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	0750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	0780 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	0800 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zavaritsky	0800 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Zavaritsky	0850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Karymsky	0850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	0850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	0850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akademia Nauk	0950 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	0950 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	1000 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kizimen	1010 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	1010 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	1050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Klyuchevskoy	1050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	1100 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	1150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	1330 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	1350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bezymianny	1350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	1350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Karymsky	1400 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	1500 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	1500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Koryaksky	1550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bakening	1550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Uzon	1550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	1550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	1650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	1650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gamchen	1650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	1650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	1700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	1700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	1750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	1800 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Koryaksky	1950 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	2000 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Karymsky	2050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	2050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	2100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	2100 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	2150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	2200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	2250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	2250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	2250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	2300 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	2350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	2450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	2490 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	2500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	2530 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	2530 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	2620 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	2650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	2750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	2750 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Kikhpinych	2780 BCE ± 25 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kikhpinych	2850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	2900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	2900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	2950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	2950 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zhupanovsky	3050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	3050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	3200 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	3200 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	3200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	3250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	3400 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	3450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	3500 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	3500 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	3500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	3550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	3650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	3700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	3790 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akademia Nauk	3850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Klyuchevskoy	3950 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kizimen	4050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	4050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	4150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	4200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	4250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	4250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	4340 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	4350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	4400 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	4400 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bolshoi Semiachik	4450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kizimen	4450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	4450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	4460 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maly Semyachik	4500 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	4530 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	4550 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tolbachik	4550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	4650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	4850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	4900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Koryaksky	5050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	5050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zhupanovsky	5050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	5050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bezymianny	5050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	5250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	5400 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	5450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	5450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	5450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Tolbachik	5450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akademia Nauk	5500 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	5500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	5500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	5600 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	5600 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	5650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Avachinsky	5700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Uzon	5700 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Uzon	5750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	5750 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Taunshits	5800 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kizimen	5800 BCE ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	5800 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Maly Semyachik	5850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Avachinsky	5980 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Krasheninnikov	6000 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	6000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	6050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Avachinsky	6100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	6100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	6150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	6200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	6250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bakening	6300 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	6350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	6350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	6380 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	6400 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kizimen	6400 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	6500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	6550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bakening	6550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Kostakan	6550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Karymsky	6600 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	6600 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ushkovsky	6670 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bolshoi Semiachik	6800 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	6800 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	6950 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	7000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bezymianny	7050 BCE ± 2000 years	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	7250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	7300 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7400 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	7500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Maly Semyachik	7550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Bakening	7550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Ushkovsky	7550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Sheveluch	7550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolbachik	7600 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sheveluch	7600 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7630 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	7950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kizimen	8050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Krasheninnikov	8050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kostakan	8050 BCE ± 1000 years	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	8100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	8200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	8350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	8450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sheveluch	8500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology

Kuril Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Chikurachki	2023 Jan 28	2023 Feb 8	Confirmed	Observations: Reported
Chirinkotan	2022 Oct 7	2022 Oct 7	Confirmed	Observations: Reported
Alaid	2022 Sep 10	2022 Nov 26	Confirmed	Observations: Reported
Ebeko	2022 Jun 11	2024 Dec 31	Confirmed	Observations: Reported
Chikurachki	2022 Jan 17	2022 Oct 17	Confirmed	Observations: Satellite (visual)
Chirinkotan	2021 Aug 8	2021 Aug 26	Confirmed	Observations: Reported
Chikurachki	2021 Mar 21	2021 Aug 25	Confirmed	Observations: Satellite (visual)
Sarychev Peak	2020 Feb 29 ± 1 days	2021 Nov 26	Confirmed	Observations: Reported
Raikoke	2019 Jun 22	2019 Jul 1	Confirmed	Observations: Reported
Sarychev Peak	2019 May 16	2019 Oct 7	Confirmed	Observations: Reported
Ketoi	[2018 Sep 21]	[2018 Sep 21]	Uncertain
Sarychev Peak	2018 Sep 8	2018 Oct 15	Confirmed	Observations: Reported
Alaid	2018 Aug 21	2018 Aug 21	Confirmed	Observations: Satellite (visual)
Sarychev Peak	2017 Oct 12 (?)	2017 Nov 13 (?)	Confirmed	Observations: Reported
Kambalny	2017 Mar 24	2017 Apr 23	Confirmed	Observations: Reported
Chirinkotan	2016 Nov 29	2017 Apr 7	Confirmed	Observations: Reported
Ebeko	2016 Oct 20	2021 Nov 9	Confirmed	Observations: Reported
Chikurachki	2016 Jul 27	2016 Aug 30	Confirmed	Observations: Reported
Chikurachki	2016 Mar 29	2016 Mar 31	Confirmed	Observations: Reported
Alaid	2015 Sep 29	2016 Aug 11	Confirmed	Observations: Reported
Chikurachki	2015 Feb 16	2015 Feb 18	Confirmed	Observations: Reported
Sinarka	[2014 Dec 3]	[2014 Dec 3]	Uncertain
Chirinkotan	2014 Nov 21	2015 Aug 10	Confirmed	Observations: Reported
Ketoi	[2013 Jul 25]	[2013 Aug 12]	Uncertain
Chirinkotan	2013 Jun 11	2014 Jun 1 ± 4 days	Confirmed	Observations: Reported
Etorofu-Yakeyama [Grozny Group]	2013 Feb 16	2013 Apr 4	Confirmed	Observations: Reported
Chirpoi	2012 Nov 11	2016 Oct 18 (?)	Confirmed	Observations: Reported
Alaid	2012 Oct 5	2012 Dec 12	Confirmed	Observations: Reported
Etorofu-Yakeyama [Grozny Group]	2012 Aug 16	2012 Aug 25	Confirmed	Observations: Reported
Sarychev Peak	[2010 Sep 20]	[2010 Sep 20]	Uncertain
Ebeko	2010 Jul 2	2010 Jul 9 ± 7 days	Confirmed	Observations: Reported
Ekarma	2010 Jun 30	2010 Aug 10 (?)	Confirmed	Observations: Reported
Gorely	2010 Jun 6	2010 Jun 22 (?)	Confirmed	Observations: Reported
Kolokol Group	[2009 Aug 26]	[Unknown]	Uncertain
Sarychev Peak	2009 Jun 11	2009 Jul 16 (?) ± 15 days	Confirmed	Observations: Reported
Ebeko	2009 Feb 11	2009 Jul 13 (?)	Confirmed	Observations: Reported
Akan	2008 Nov 18	2008 Nov 28	Confirmed	Observations: Reported
Chikurachki	2008 Jul 29	2008 Aug 8 (?)	Confirmed	Observations: Reported
Chikurachki	2007 Aug 19	2007 Nov 1 ± 7 days	Confirmed	Observations: Reported
Chikurachki	2007 Mar 4	2007 Apr 18	Confirmed	Observations: Reported
Akan	2006 Mar 21	2006 Mar 21	Confirmed	Observations: Reported
Kolokol Group	[2005 Jul 2 ± 182 days]	[Unknown]	Uncertain
Chikurachki	2005 Mar 12	2005 Apr 7	Confirmed	Observations: Reported
Ebeko	2005 Jan 29	2005 Feb 16	Confirmed	Observations: Reported
Chirinkotan	2004 Jul 20	2004 Jul 20	Confirmed	Observations: Reported
Tokachidake	2004 Feb 25	2004 Apr 19	Confirmed	Observations: Reported
Chikurachki	2003 Apr 17	2003 Jul 3 (?)	Confirmed	Observations: Reported
Chikurachki	2002 Jan 25	2002 Apr 22 (?)	Confirmed	Observations: Reported
Mutnovsky	2000 Jun 30	2000 Jun 30	Confirmed	Observations: Hydrophonic
Mutnovsky	2000 Mar 17	2000 Mar 17	Confirmed	Observations: Reported
Moyorodake [Medvezhia]	1999 Oct 7	1999 Oct 13	Confirmed	Observations: Reported
Akan	1998 Nov 9	1998 Nov 9	Confirmed	Observations: Reported
Alaid	[1997 Aug 23]	[1997 Aug 23]	Uncertain
Alaid	1996 Dec 3	Unknown	Confirmed	Observations: Reported
Akan	1996 Nov 21	1996 Nov 21	Confirmed	Observations: Reported
Ebeko	1991 Jan 16 ± 15 days	1991 Jan 16 ± 15 days	Confirmed	Observations: Reported
Etorofu-Yakeyama [Grozny Group]	1989 May 3	1989 Aug 5 ± 4 days	Confirmed	Observations: Reported
Ebeko	1989 Feb 2	1990 Apr 15 ± 5 days	Confirmed	Observations: Reported
Sarychev Peak	1989 Jan 13	1989 Jan 14	Confirmed	Observations: Reported
Tokachidake	1988 Dec 10 (?)	1989 May 16 ± 15 days	Confirmed	Observations: Reported
Akan	1988 Jan 5	1988 Feb 18 (?)	Confirmed	Observations: Reported
Ebeko	1987 Oct 14	1988 Jan 16 ± 15 days	Confirmed	Observations: Reported
Chikurachki	1986 Nov 18	1986 Dec 7	Confirmed	Observations: Reported
Chirinkotan	1986 Oct 11	1986 Oct 12	Confirmed	Observations: Reported
Sarychev Peak	1986 Sep 1 (?) ± 15 days	Unknown	Confirmed	Observations: Reported
Alaid	1986 May 25	1986 May 28 ± 3 days	Confirmed	Observations: Reported
Tokachidake	1985 Jun 19	1985 Jun 22	Confirmed	Observations: Reported
Gorely	1984 Aug 4	1986 Sep 21 (?)	Confirmed	Observations: Reported
Akan	1984 May 1	1984 May 1	Confirmed	Observations: Reported
Chirpoi	1982 Nov 22	Unknown	Confirmed	Observations: Reported
Alaid	1982 Mar 29	1982 Mar 29	Confirmed	Observations: Reported
Chachadake [Tiatia]	[1982 Feb 10]	[1982 Feb 14]	Uncertain
Alaid	1981 Nov 25	Unknown	Confirmed	Observations: Reported
Chachadake [Tiatia]	1981 Jun 10	1981 Jun 25	Confirmed	Observations: Reported
Alaid	1981 Apr 27	1981 Jun 5	Confirmed	Observations: Reported
Gorely	1980 Jun 15 ± 5 days	1981 Jul 3	Confirmed	Observations: Reported
Ekarma	1980 May 24	Unknown	Confirmed	Observations: Reported
Chirinkotan	1979 Apr 16 ± 15 days	1980 Oct 10	Confirmed	Observations: Reported
Chachadake [Tiatia]	1978 Jul 20	Unknown	Confirmed	Observations: Reported
Sarychev Peak	1976 Sep 23	1976 Oct 2	Confirmed	Observations: Reported
Chikurachki	1973 Aug 10	1973 Sep 28	Confirmed	Observations: Reported
Kolokol Group	1973 Jul 25	1973 Jul 26 (?)	Confirmed	Observations: Reported
Chachadake [Tiatia]	1973 Jul 14	1973 Jul 28	Confirmed	Observations: Reported
Alaid	[1973 Jul 2 ± 182 days]	[Unknown]	Uncertain
Etorofu-Yakeyama [Grozny Group]	1973 May 16	1973 May 17	Confirmed	Observations: Reported
Etorofu-Yakeyama [Grozny Group]	1973 Jan 16 ± 15 days	1973 Jan 16 ± 15 days	Confirmed	Observations: Reported
Alaid	1972 Jun 18	1972 Sep 11	Confirmed	Observations: Reported
Unnamed	1972 Apr 29	1972 Apr 30	Confirmed	Observations: Hydrophonic
Zheltovsky	[1972 Mar 16 ± 15 days]	[Unknown]	Uncertain
Ebeko	[1971 Jul 2 ± 182 days]	[Unknown]	Uncertain
Etorofu-Yakeyama [Grozny Group]	1970 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Kolokol Group	1970 Feb 16 ± 15 days	1970 Mar 16 ± 15 days	Confirmed	Observations: Reported
Ebeko	1969 Feb 16 ± 15 days	1969 Feb 16 (?) ± 15 days	Confirmed	Observations: Reported
Etorofu-Yakeyama [Grozny Group]	1968 Feb 16 ± 15 days	1968 Feb 16 ± 15 days	Confirmed	Observations: Reported
Chikurachki	1967 Sep 6	1967 Sep 20	Confirmed	Observations: Reported
Unnamed	[1967 Apr 26]	[Unknown]	Uncertain
Ebeko	1967 Jan 16 ± 15 days	1967 Apr 16 (?) ± 15 days	Confirmed	Observations: Reported
Akan	1966 Jun 15 ± 5 days	1966 Jun 15 ± 5 days	Confirmed	Observations: Reported
Sarychev Peak	1965 Dec 9	1965 Dec 9	Confirmed	Observations: Reported
Ebeko	1965 Aug 16 (?) ± 15 days	1965 Aug 16 (?) ± 15 days	Confirmed	Observations: Reported
Akan	1965 May 15 ± 5 days	1965 May 15 ± 5 days	Confirmed	Observations: Reported
Akan	1964 Jun 18	1964 Jul 4 (?)	Confirmed	Observations: Reported
Chikurachki	1964 Feb 1	1964 Feb 16 ± 15 days	Confirmed	Observations: Reported
Ebeko	1963 Mar 8	1964 Jul 2 ± 182 days	Confirmed	Observations: Reported
Tokachidake	1962 Jun 29	1962 Sep 16 ± 15 days	Confirmed	Observations: Reported
Akan	1962 Apr 28	1962 Apr 28	Confirmed	Observations: Reported
Tokachidake	1961 Aug 14	1961 Aug 14	Confirmed	Observations: Reported
Chikurachki	1961 May 2	1961 Aug 10	Confirmed	Observations: Reported
Gorely	1961 Jan 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Mutnovsky	1960 Dec 16 ± 15 days	1961 Jan 16 ± 15 days	Confirmed	Observations: Reported
Chirpoi	1960 Oct 20	Unknown	Confirmed	Observations: Reported
Ketoi	1960 Sep 27	Unknown	Confirmed	Observations: Reported
Akan	1960 Sep 16 ± 15 days	1960 Sep 16 ± 15 days	Confirmed	Observations: Reported
Sarychev Peak	1960 Aug 30	1960 Aug 30	Confirmed	Observations: Reported
Tokachidake	1959 Aug 15 ± 5 days	1959 Nov 25	Confirmed	Observations: Reported
Akan	1959 May 15 ± 5 days	1959 Oct 16 ± 15 days	Confirmed	Observations: Reported
Tokachidake	1958 Oct 4	1958 Oct 4	Confirmed	Observations: Reported
Moyorodake [Medvezhia]	1958 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Chikurachki	1958 May 26	1958 May 27	Confirmed	Observations: Reported
Akan	1958 Feb 23	1958 Feb 23	Confirmed	Observations: Reported
Zavaritzki Caldera	1957 Nov 12	1957 Dec 1	Confirmed	Observations: Reported
Rasshua	1957 Oct 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Tokachidake	[1957 Aug 20]	[1957 Aug 20]	Uncertain
Chikurachki	1957 May 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Akan	1957 Feb 26	1957 Sep 5	Confirmed	Observations: Reported
Tokachidake	1956 Jun 16 ± 15 days	1956 Jun 16 ± 15 days	Confirmed	Observations: Reported
Akan	1956 Mar 18	1956 Oct 31	Confirmed	Observations: Reported
Akan	1955 Nov 19	1955 Nov 19	Confirmed	Observations: Reported
Chirinkotan	1955 Jul 2 (?) ± 182 days	Unknown	Confirmed	Observations: Reported
Tokachidake	1954 Sep 16 ± 15 days	1954 Sep 16 ± 15 days	Confirmed	Observations: Reported
Sarychev Peak	1954 Aug 16 ± 15 days	1954 Oct 16 ± 15 days	Confirmed	Observations: Reported
Akan	1954 Jan 7 (?)	1954 Apr 13	Confirmed	Observations: Reported
Tao-Rusyr Caldera	1952 Nov 12	1952 Nov 19	Confirmed	Observations: Reported
Karpinsky Group	1952 Nov 5	Unknown	Confirmed	Observations: Reported
Tokachidake	1952 Aug 17	Unknown	Confirmed	Observations: Reported
Kolokol Group	1952 Jan 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Akan	[1951 Jul 31]	[1952 Mar 16 ± 15 days]	Uncertain
Sashiusudake [Baransky]	1951 Jul 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Gorely	1947 Dec	Unknown	Confirmed	Observations: Reported
Sarychev Peak	1946 Nov 9	1946 Nov 19	Confirmed	Observations: Reported
Kolokol Group	1946 Apr 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Moyorodake [Medvezhia]	[1946]	[Unknown]	Uncertain
Mutnovsky	1945 Jun 23	Unknown	Confirmed	Observations: Reported
Milna	[1944]	[Unknown]	Uncertain
Kolokol Group	1940 ± 6 years	Unknown	Confirmed	Observations: Reported
Mutnovsky	1939 May	Unknown	Confirmed	Observations: Reported
Mutnovsky	1938 Nov	Unknown	Confirmed	Observations: Reported
Nemo Peak	1938 Aug 12	Unknown	Confirmed	Observations: Reported
Shiretoko-Iozan	1935 Dec	1936 Oct	Confirmed	Observations: Reported
Ebeko	1934 Oct 4	1935 Oct 15 ± 45 days	Confirmed	Observations: Reported
Alaid	1933 Nov 13	1934 Aug	Confirmed	Observations: Reported
Chikurachki	[1933 Apr 15 ± 45 days]	[Unknown]	Uncertain
Kharimkotan	1933 Jan 8	1933 Apr 14 (on or after)	Confirmed	Observations: Reported
Fuss Peak	[1933]	[Unknown]	Uncertain
Gorely	[1932]	[Unknown]	Uncertain
Nemo Peak	[1932 (?)]	[Unknown]	Uncertain
Sarychev Peak	[1932 (?)]	[Unknown]	Uncertain
Etorofu-Atosanupuri [Atosanupuri]	1932	Unknown	Confirmed	Observations: Reported
Kharimkotan	1931 Sep	Unknown	Confirmed	Observations: Reported
Tokachidake	1931 May 16	1931 May 16	Confirmed	Observations: Reported
Gorely	1931 May	1931 Jul 15 ± 45 days	Confirmed	Observations: Reported
Gorely	1930 Sep	1931 Jan 17	Confirmed	Observations: Reported
Sarychev Peak	1930 Feb 13	1930 Feb 13	Confirmed	Observations: Reported
Gorely	1929 Sep 1	1930 Apr	Confirmed	Observations: Reported
Mutnovsky	1929 Feb	Unknown	Confirmed	Observations: Reported
Tokachidake	1928 Dec 4	1928 Dec 25	Confirmed	Observations: Reported
Sarychev Peak	1928 Feb 14	Unknown	Confirmed	Observations: Reported
Mutnovsky	1928 Jan 25	1928 Feb	Confirmed	Observations: Reported
Tokachidake	1928 Jan	1928 May 23	Confirmed	Observations: Reported
Akan	[1927 Apr]	[1927 May]	Uncertain
Mutnovsky	1927 Jan	1927 Feb	Confirmed	Observations: Reported
Sarychev Peak	1927	Unknown	Confirmed	Observations: Reported
Tokachidake	1925 Nov 20	1927 Sep	Confirmed	Observations: Reported
Kolokol Group	1924 Mar 13	Unknown	Confirmed	Observations: Reported
Sarychev Peak	1924 Feb 15	Unknown	Confirmed	Observations: Reported
Raikoke	1924 Feb 14 (?)	1924 Feb 15	Confirmed	Observations: Reported
Ketoi	1924	Unknown	Confirmed	Observations: Reported
Zheltovsky	1923 Feb 11	1923 Apr	Confirmed	Observations: Reported
Sarychev Peak	1923 Jan 17	1923 Jan 22	Confirmed	Observations: Reported
Zavaritzki Caldera	1923 ± 8 years	Unknown	Confirmed	Observations: Reported
Mutnovsky	1917 Jul 5 ± 4 days	Unknown	Confirmed	Observations: Reported
Mutnovsky	1916 Dec	Unknown	Confirmed	Observations: Reported
Mutnovsky	1916 Jul 15 ± 5 days	Unknown	Confirmed	Observations: Reported
Milna	1914 Jun 4	1914 Jun 4	Confirmed	Observations: Reported
Ksudach	1907 Mar 28 (?)	Unknown	Confirmed	Observations: Reported
Nemo Peak	1906	Unknown	Confirmed	Observations: Reported
Mutnovsky	1904 Apr 2	1904 Jun 26 (on or after)	Confirmed	Observations: Reported
Iliinsky	1901	Unknown	Confirmed	Observations: Reported
Chirinkotan	1900 ± 10 years	Unknown	Confirmed	Observations: Reported
Raususan [Mendeleev]	[1900]	[Unknown]	Uncertain
Maruyama	1898 Dec 3 (?)	1898 Dec 6	Confirmed	Observations: Reported
Mutnovsky	1898 Apr	1898 Jul 15 ± 45 days	Confirmed	Observations: Reported
Kolokol Group	1894 Jul 25	1894 Jul 26	Confirmed	Observations: Reported
Alaid	1894	Unknown	Confirmed	Observations: Reported
Shiretoko-Iozan	1890 Jun 15	Unknown	Confirmed	Observations: Reported
Shiretoko-Iozan	1889 Aug 9	1889 Oct 7 ± 7 days	Confirmed	Observations: Reported
Tokachidake	1889	Unknown	Confirmed	Observations: Reported
Tokachidake	1887 Jun	Unknown	Confirmed	Observations: Reported
Ushishur	1884 Jul	Unknown	Confirmed	Observations: Reported
Chirinkotan	1884 ± 6 years	Unknown	Confirmed	Observations: Reported
Moyorodake [Medvezhia]	1883 May	1883 Jun	Confirmed	Observations: Reported
Milna	1883 Apr 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Kharimkotan	1883	Unknown	Confirmed	Observations: Reported
Milna	1881 Sep	Unknown	Confirmed	Observations: Reported
Shiretoko-Iozan	[1880 Nov 24]	[1880 Nov 26]	Uncertain
Srednii	[1880 Jul 12 (?)]	[1880 Jul 12 (?)]	Uncertain
Raususan [Mendeleev]	1880	Unknown	Confirmed	Observations: Reported
Chirpoi	1879 May	1879 Jun	Confirmed	Observations: Reported
Sarychev Peak	1879 Jan 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Shiretoko-Iozan	1876 Sep 23	1876 Sep 26	Confirmed	Observations: Reported
Sinarka	1872	1878	Confirmed	Observations: Reported
Gorely	1869	Unknown	Confirmed	Observations: Reported
Alaid	1860 Jul 7	1860 Jul 9	Confirmed	Observations: Reported
Chirippusan [Chirip]	1860 (?)	Unknown	Confirmed	Observations: Reported
Ebeko	1859 Sep 27	Unknown	Confirmed	Observations: Reported
Chirpoi	1857 Jul	Unknown	Confirmed	Observations: Reported
Shiretoko-Iozan	1857	1858	Confirmed	Observations: Reported
Tokachidake	1857	Unknown	Confirmed	Observations: Reported
Gorely	[1855 Apr]	[Unknown]	Uncertain
Sinarka	1855	Unknown	Confirmed	Observations: Reported
Fuss Peak	1854 Jul 5	Unknown	Confirmed	Observations: Reported
Alaid	1854 Jun 27	Unknown	Confirmed	Observations: Reported
Chirpoi	1854 Jun 24	Unknown	Confirmed	Observations: Reported
Opala	[1854]	[Unknown]	Uncertain
Mutnovsky	1853 Dec 18	1854 Mar	Confirmed	Observations: Reported
Chikurachki	1853 Dec	1859	Confirmed	Observations: Reported
Mutnovsky	1853 Jan	Unknown	Confirmed	Observations: Reported
Mutnovsky	1852 Mar	Unknown	Confirmed	Observations: Reported
Milna	1849	Unknown	Confirmed	Observations: Reported
Kharimkotan	1848	Unknown	Confirmed	Observations: Reported
Mutnovsky	1848	Unknown	Confirmed	Observations: Reported
Tomariyama [Golovnin]	1848	Unknown	Confirmed	Observations: Reported
Kharimkotan	1846	Unknown	Confirmed	Observations: Reported
Sinarka	1846	Unknown	Confirmed	Observations: Reported
Rasshua	1846	Unknown	Confirmed	Observations: Reported
Kolokol Group	1845	1846	Confirmed	Observations: Reported
Ketoi	1843 Jul	1846	Confirmed	Observations: Reported
Chirippusan [Chirip]	1843	Unknown	Confirmed	Observations: Reported
Milna	1842 Jun	Unknown	Confirmed	Observations: Reported
Ebeko	1833 Dec 31 ± 365 days	Unknown	Confirmed	Observations: Reported
Gorely	1832 Feb	Unknown	Confirmed	Observations: Reported
Gorely	1828 Jun	Unknown	Confirmed	Observations: Reported
Opala	[1827]	[Unknown]	Uncertain
Prevo Peak	1825 ± 25 years	Unknown	Confirmed	Observations: Reported
Zheltovsky	[1823 ± 5 years]	[Unknown]	Uncertain
Gorely	[1821]	[Unknown]	Uncertain
Etorofu-Atosanupuri [Atosanupuri]	1812 Sep 5 ± 4 days	Unknown	Confirmed	Observations: Reported
Chachadake [Tiatia]	1812 Aug	Unknown	Confirmed	Observations: Reported
Berutarubesan [Berutarube]	[1812]	[Unknown]	Uncertain
Chirpoi	1811 Jun 11	Unknown	Confirmed	Observations: Reported
Akan	1808 (?)	Unknown	Confirmed	Observations: Reported
Sarychev Peak	1805	Unknown	Confirmed	Observations: Reported
Rausudake	1800 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Ebeko	1793	Unknown	Confirmed	Observations: Reported
Alaid	1790	1793	Confirmed	Observations: Reported
Chirpoi	1790 ± 20 years	Unknown	Confirmed	Observations: Reported
Kolokol Group	1780 ± 10 years	Unknown	Confirmed	Observations: Reported
Akan	1780 ± 75 years	Unknown	Confirmed	Observations: Reported
Moyorodake [Medvezhia]	1778 Dec 31 ± 365 days	Unknown	Confirmed	Observations: Reported
Raikoke	1778	Unknown	Confirmed	Observations: Reported
Opala	1776 Oct 23	Unknown	Confirmed	Observations: Reported
Ushishur	1769 (in or after)	Unknown	Confirmed	Observations: Reported
Ekarma	1767	1769	Confirmed	Observations: Reported
Sarychev Peak	1765 ± 5 years	Unknown	Confirmed	Observations: Reported
Raikoke	1765 ± 5 years	Unknown	Confirmed	Observations: Reported
Prevo Peak	1765 ± 5 years	Unknown	Confirmed	Observations: Reported
Chirinkotan	[1760 (?)]	[Unknown]	Uncertain
Ksudach	1750 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Mutnovsky	1750 ± 50 years	Unknown	Confirmed	Observations: Reported
Gorely	1750 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Fuss Peak	[1742]	[Unknown]	Uncertain
Koshelev	[1741]	[Unknown]	Uncertain
Taisetsuzan	1739 (in or after)	Unknown	Confirmed	Correlation: Tephrochronology
Sinarka	1725 ± 25 years	Unknown	Confirmed	Observations: Reported
Kharimkotan	1713	Unknown	Confirmed	Observations: Reported
Chirpoi	1712 Dec 31 ± 365 days	Unknown	Confirmed	Observations: Reported
Ushishur	1710 ± 10 years	Unknown	Confirmed	Observations: Reported
Nemo Peak	1710 ± 10 years	Unknown	Confirmed	Observations: Reported
Chikurachki	1690 ± 10 years	Unknown	Confirmed	Correlation: Tephrochronology
Koshelev	1690 ± 10 years	Unknown	Confirmed	Observations: Reported
Ebeko	1670 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ebeko	1650 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mutnovsky	1650 ± 50 years	Unknown	Confirmed	Observations: Reported
Akan	1600 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Ebeko	1600 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Tokachidake	1570 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Sashiusudake [Baransky]	1570 ± 30 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Akan	1550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Sashiusudake [Baransky]	1460 ± 30 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Rausudake	1350 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kambalny	1350 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Nemo Peak	1350 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	1330 ± 25 years	Unknown	Confirmed	Correlation: Tephrochronology
Kussharo	1320 ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	1300 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tomariyama [Golovnin]	1290 ± 20 years	Unknown	Confirmed	Correlation: Tephrochronology
Akan	1250 ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Tokachidake	1250 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fuss Peak	1250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mashu	1080 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tokachidake	1050 ± 200 years	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	1030 ± 25 years	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	1000 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Mutnovsky	0950 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tokachidake	0950 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akan	0950 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Shiretoko-Iozan	0850 ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	0750 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Nemo Peak	0750 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	0700 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kussharo	0700 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Opala	0610 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akan	0600 ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Tokachidake	0600 ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Rausudake	0550 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorely	0550 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kussharo	0450 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mashu	0350 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tokachidake	0350 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ksudach	0350 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Diky Greben	0350 ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Tolmachev Dol	0300 ± 150 years	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	0250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	0250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akan	0250 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ksudach	0240 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorely	0200 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mashu	0150 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tenchozan	[0100]	[Unknown]	Uncertain
Akan	0100 ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Rausudake	0080 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iliinsky	0050 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Gorely	0050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	0050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tokachidake	0001 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Moyorodake [Medvezhia]	0050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akan	0050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Mutnovsky	0100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	0200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	0200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Rausudake	0270 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akan	0300 BCE ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Khodutka	0300 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	0350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ebeko	0390 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mutnovsky	0450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Nemo Peak	0550 BCE ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Akan	0550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Taisetsuzan	0550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	0700 BCE ± 850 years	Unknown	Confirmed	Correlation: Tephrochronology
Akan	0800 BCE ± 250 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Khodutka	0930 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Khodutka	1050 BCE (in or before)	Unknown	Confirmed	Correlation: Tephrochronology
Tokachidake	1350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Koshelev	1350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Taisetsuzan	1450 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chikurachki	1500 BCE ± 250 years	Unknown	Confirmed	Correlation: Tephrochronology
Kussharo	1550 BCE ± 2000 years	Unknown	Confirmed	Correlation: Tephrochronology
Opala	1550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Fuss Peak	1590 BCE ± 70 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Maruyama	1700 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Tokachidake	1750 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chikurachki	1750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Nemo Peak	1850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fuss Peak	1850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Chikurachki	1950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	2000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	2050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	2050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iliinsky	2050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Akan	2050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mashu	2050 BCE ± 40 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Mutnovsky	2150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	2200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	2250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Diky Greben	2250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Raususan [Mendeleev]	2270 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Gorely	2450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tolmachev Dol	2650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Tokachidake	2650 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorely	2750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mashu	2800 BCE ± 750 years	Unknown	Confirmed	Correlation: Tephrochronology
Taisetsuzan	2800 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iliinsky	2850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mutnovsky	2900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	3000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zheltovsky	3050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Diky Greben	3050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Nemo Peak	3050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akan	3050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Fuss Peak	3150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Taisetsuzan	3200 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorely	3450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Opala	3500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Barkhatnaya Sopka	3550 BCE (in or after)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	3550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akan	3550 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mashu	3550 BCE ± 40 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kussharo	3550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	3580 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mutnovsky	3650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fuss Peak	3850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	3900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	3950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	4050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Yavinsky	4050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Koshelev	4050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	4100 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4300 BCE ± 150 years	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tomariyama [Golovnin]	4550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akan	4550 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Ksudach	4550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iliinsky	4550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Koshelev	4550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mutnovsky	4550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4600 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	4650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	4700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	4750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	4750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fuss Peak	4850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	4900 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorely	4950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	5000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	5050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	5150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	5200 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Mutnovsky	5250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fuss Peak	5250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	5300 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fuss Peak	5340 BCE ± 30 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Mutnovsky	5350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	5450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	5450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	5500 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Tao-Rusyr Caldera	5550 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Nemo Peak	5550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mashu	5550 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Ksudach	5600 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Gorely	5650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iliinsky	5700 BCE ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Diky Greben	5700 BCE ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Kussharo	5800 BCE ± 2250 years	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	5800 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Rishirizan	5830 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Mutnovsky	5900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	5950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	6000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zheltovsky	6050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	6050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Chikurachki	6310 BCE ± 70 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kurile Lake	6440 BCE ± 25 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akan	7050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Zheltovsky	7050 BCE ± 1000 years	Unknown	Confirmed	Correlation: Tephrochronology
Nemo Peak	7050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	7250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Gorely	7400 BCE ± 150 years	Unknown	Confirmed	Correlation: Tephrochronology
Ushishur	7450 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Moekeshiwan [Lvinaya Past]	7480 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Nemo Peak	7550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Mutnovsky	7550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kurile Lake	7550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Chikurachki	7550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Ksudach	7900 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Vilyuchinsky	8050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Chikurachki	8500 BCE ± 950 years	Unknown	Confirmed	Correlation: Tephrochronology
Chikurachki	9360 BCE ± 80 years	Unknown	Confirmed	Isotopic: 14C (calibrated)

Northeast Japan Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Asamayama	2019 Aug 7	2019 Aug 25	Confirmed	Observations: Reported
Kusatsu-Shiranesan	2018 Jan 23	2018 Jan 23	Confirmed	Observations: Reported
Asamayama	2015 Jun 16	2015 Jun 19	Confirmed	Observations: Reported
Asamayama	2009 Jan 21	2009 May 2	Confirmed	Observations: Reported
Asamayama	2008 Aug 10	2008 Aug 14	Confirmed	Observations: Reported
Asamayama	2004 Sep 1	2004 Dec 9	Confirmed	Observations: Reported
Asamayama	2003 Feb 6	2003 Apr 18	Confirmed	Observations: Reported
Hokkaido-Komagatake	2000 Sep 4	2000 Nov 8	Confirmed	Observations: Reported
Toya	2000 Mar 31	2001 Sep 15 ± 5 days	Confirmed	Observations: Reported
Hokkaido-Komagatake	1998 Oct 25	1998 Oct 25	Confirmed	Observations: Reported
Niigata-Yakeyama	1998 Mar 30	Unknown	Confirmed	Observations: Reported
Niigata-Yakeyama	1997 Oct 29	1997 Dec 10	Confirmed	Observations: Reported
Akita-Yakeyama	1997 Aug 16	1997 Aug 16	Confirmed	Observations: Reported
Akita-Yakeyama	1997 May 11	1997 May 11	Confirmed	Observations: Reported
Adatarayama	1996 Sep 1	1996 Sep 1	Confirmed	Observations: Reported
Hokkaido-Komagatake	1996 Mar 5	1996 Mar 12 (?)	Confirmed	Observations: Reported
Asamayama	1990 Jul 20	1990 Jul 20	Confirmed	Observations: Reported
Niigata-Yakeyama	1989 Apr 19	1989 Apr 26	Confirmed	Observations: Reported
Kusatsu-Shiranesan	[1989 Jan 6]	[1989 Jan 6]	Uncertain
Niigata-Yakeyama	1987 Apr 25 ± 5 days	Unknown	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1983 Jul 26	1983 Dec 21	Confirmed	Observations: Reported
Niigata-Yakeyama	1983 Apr 14 (?)	1983 Apr 15 (?)	Confirmed	Observations: Reported
Asamayama	1983 Apr 8	1983 Apr 8	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1982 Oct 26	1982 Dec 29	Confirmed	Observations: Reported
Asamayama	1982 Oct 2	1982 Oct 2	Confirmed	Observations: Reported
Asamayama	1982 Apr 26	1982 Apr 26	Confirmed	Observations: Reported
Shikotsu	1981 Feb 27	1981 Feb 27	Confirmed	Observations: Reported
Shikotsu	1978 Dec 12	1979 May 11	Confirmed	Observations: Reported
Shikotsu	1978 May 14	1978 May 17	Confirmed	Observations: Reported
Azumayama	1977 Dec 7	1977 Dec 7	Confirmed	Observations: Reported
Toya	1977 Aug 7	1982 Mar 16 ± 15 days	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1976 Mar 2	1976 Mar 2	Confirmed	Observations: Reported
Niigata-Yakeyama	1974 Jul 28	1974 Jul 28	Confirmed	Observations: Reported
Chokaisan	1974 Mar 1	1974 Apr 30	Confirmed	Observations: Reported
Asamayama	1973 Feb 1	1973 May 24	Confirmed	Observations: Reported
Akita-Komagatake	1970 Sep 18	1971 Jan 26	Confirmed	Observations: Reported
Azumayama	[1966 May 16 ± 15 days]	[1966 Aug 16 ± 15 days]	Uncertain
Asamayama	1965 May 23	1965 May 23	Confirmed	Observations: Reported
Nasudake	1963 Nov 20	1963 Nov 21	Confirmed	Observations: Reported
Nasudake	[1963 Jul 10]	[1963 Jul 11]	Uncertain
Niigata-Yakeyama	1963 Jul 10	1963 Sep 30	Confirmed	Observations: Reported
Niigata-Yakeyama	1963 Feb 14	Unknown	Confirmed	Observations: Reported
Niigata-Yakeyama	1962 Mar 14	1962 Mar 14	Confirmed	Observations: Reported
Asamayama	1961 Aug 18	1961 Nov 16	Confirmed	Observations: Reported
Nasudake	1960 Oct 10 (?)	Unknown	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1958 Dec 31 ± 365 days	Unknown	Confirmed	Observations: Reported
Asamayama	1958 Oct 3	1959 Aug 26 ± 5 days	Confirmed	Observations: Reported
Akita-Yakeyama	1957 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Shikotsu	1954 Nov 19	1955 Feb 14	Confirmed	Observations: Reported
Shikotsu	1954 May 2	1954 May 2	Confirmed	Observations: Reported
Asamayama	1953 Dec 27	1955 Aug 2	Confirmed	Observations: Reported
Nasudake	1953 Oct 24	1953 Oct 29	Confirmed	Observations: Reported
Shikotsu	1953 Sep 14 (?)	1953 Sep 14 (?)	Confirmed	Observations: Reported
Nikko-Shiranesan	1952 Jul 16 ± 15 days	1952 Sep 16 ± 15 days	Confirmed	Observations: Reported
Azumayama	[1952 Jun 18]	[Unknown]	Uncertain
Asamayama	1952 Jun 7	1952 Jun 14	Confirmed	Observations: Reported
Asamayama	[1952 Jan 16 ± 15 days]	[1952 Jan 16 ± 15 days]	Uncertain
Shikotsu	1951 Jul 28	1951 Jul 28	Confirmed	Observations: Reported
Akita-Yakeyama	1951 Feb 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Shikotsu	1951 Jan 29	1951 Jan 29	Confirmed	Observations: Reported
Asamayama	1950 Sep 23	1951 Jun 17	Confirmed	Observations: Reported
Akita-Yakeyama	1950 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Azumayama	1950 Feb 10	1950 Feb 19	Confirmed	Observations: Reported
Kurikomayama	1950 Jan 15	Unknown	Confirmed	Observations: Reported
Akita-Yakeyama	1949 Aug 30	1949 Sep 1	Confirmed	Observations: Reported
Asamayama	1949 Mar 10	1949 Oct 24	Confirmed	Observations: Reported
Niigata-Yakeyama	1949 Feb 5	1949 Sep 13	Confirmed	Observations: Reported
Akita-Yakeyama	1948	Unknown	Confirmed	Observations: Reported
Shikotsu	[1947 Oct 15 ± 90 days]	[1947 Oct 15 ± 90 days]	Uncertain
Asamayama	1947 Jun	1947 Aug 14	Confirmed	Observations: Reported
Kurikomayama	1946 Nov 24	Unknown	Confirmed	Observations: Reported
Asamayama	1946 Oct 29	1946 Oct 30	Confirmed	Observations: Reported
Kurikomayama	1944 Nov 20	1944 Dec	Confirmed	Observations: Reported
Shikotsu	1944 Jul 2	1944 Jul 2	Confirmed	Observations: Reported
Toya	1944 Jun 23	1945 Sep 19	Confirmed	Observations: Reported
Asamayama	1944 Jan (?)	1945 Nov	Confirmed	Observations: Reported
Hokkaido-Komagatake	1942 Nov 16	1942 Nov 18	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1942 Feb 2	Unknown	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1941 Jan 19	1941 Jan 19	Confirmed	Observations: Reported
Zaozan [Zaosan]	1940 May 18	1940 May 18	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1940 Apr 7	1940 Sep 13	Confirmed	Observations: Reported
Zaozan [Zaosan]	[1939 Jul]	[Unknown]	Uncertain
Kusatsu-Shiranesan	1939 Feb (?)	1939 Aug 28 (?)	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1938 Jul 17 (?)	1938 Oct 5 (?)	Confirmed	Observations: Reported
Akagisan	[1938 Jul 16 (on or before)]	[Unknown]	Uncertain
Asamayama	1938 Mar 25	1942 Dec	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1937 Nov 27	1938 Feb 16 (?)	Confirmed	Observations: Reported
Hokkaido-Komagatake	1937 Mar 17	1937 Mar 19	Confirmed	Observations: Reported
Shikotsu	1936 Nov 15	1936 Nov 26	Confirmed	Observations: Reported
Shikotsu	1936 Apr 19	1936 Apr 19	Confirmed	Observations: Reported
Hokkaido-Komagatake	[1935 Oct 15]	[1935 Oct 15]	Uncertain
Asamayama	1934 Nov 13	1937 Jul	Confirmed	Observations: Reported
Iwatesan	[1934 Jul]	[1935]	Uncertain
Asamayama	1934 Jun	1934 Jun	Confirmed	Observations: Reported
Asamayama	1934 Jan 9	1934 Feb 11	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1934	Unknown	Confirmed	Observations: Reported
Shikotsu	1933 Dec 1	1933 Dec 14	Confirmed	Observations: Reported
Asamayama	1933 Jan 9	1933 Aug 3	Confirmed	Observations: Reported
Kusatsu-Shiranesan	[1933]	[Unknown]	Uncertain
Kusatsu-Shiranesan	1932 Oct 1	1932 Nov	Confirmed	Observations: Reported
Akita-Komagatake	1932 Jul 21	1932 Jul 24	Confirmed	Observations: Reported
Shikotsu	1931 Oct 11	1931 Oct 24	Confirmed	Observations: Reported
Asamayama	1931 Mar 31	1932 Sep 21	Confirmed	Observations: Reported
Asamayama	1930 Apr 18	1930 Oct 17	Confirmed	Observations: Reported
Asamayama	1929 Sep 18	1929 Nov 15	Confirmed	Observations: Reported
Akita-Yakeyama	1929 Sep	Unknown	Confirmed	Observations: Reported
Hokkaido-Komagatake	1929 Jun 17	1929 Sep 6	Confirmed	Observations: Reported
Asamayama	1929 Jan 22	1929 Apr 5	Confirmed	Observations: Reported
Shikotsu	1928 Sep 6	1929 Feb 10	Confirmed	Observations: Reported
Hokkaido-Komagatake	1928 Mar 28	Unknown	Confirmed	Observations: Reported
Shikotsu	1928 Jan 7	1928 Jan 7	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1927 Dec 29	1927 Dec 31	Confirmed	Observations: Reported
Asamayama	1927 Mar (?)	1928 Jul 25	Confirmed	Observations: Reported
Zaozan [Zaosan]	[1927]	[Unknown]	Uncertain
Shikotsu	1926 Oct 19	1926 Oct 30	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1925 Jan 22 (?)	1925 Jan 30	Confirmed	Observations: Reported
Asamayama	1924 Sep 7	1924 Sep 29	Confirmed	Observations: Reported
Hokkaido-Komagatake	1924 Jul 31	Unknown	Confirmed	Observations: Reported
Hokkaido-Komagatake	1923 Feb 27	1923 Mar 15	Confirmed	Observations: Reported
Shikotsu	1923 Feb	1923 Aug 23	Confirmed	Observations: Reported
Hokkaido-Komagatake	1922 May 22	Unknown	Confirmed	Observations: Reported
Shikotsu	1921 Jul 6	1921 Jul 6	Confirmed	Observations: Reported
Asamayama	1920 Dec 6	1922 Apr 5	Confirmed	Observations: Reported
Shikotsu	1920 Jul 17	1920 Jul 23	Confirmed	Observations: Reported
Iwatesan	1919 Jul 15 (?)	1919 Jul 15 (?)	Confirmed	Observations: Reported
Hokkaido-Komagatake	1919 Jun 17	1919 Jul 26	Confirmed	Observations: Reported
Shikotsu	1919 May 4	1919 May 4	Confirmed	Observations: Reported
Asamayama	1919 Mar 14	1919 Aug 27 (?)	Confirmed	Observations: Reported
Shikotsu	1918 Jun 13	1918 Jul 31	Confirmed	Observations: Reported
Asamayama	[1918]	[Unknown]	Uncertain
Asamayama	1917 May 3 (?)	1917 Jul 31 (?)	Confirmed	Observations: Reported
Shikotsu	1917 Apr 30	1917 May 12	Confirmed	Observations: Reported
Asamayama	1916 May 12 (?)	1916 Oct 2	Confirmed	Observations: Reported
Asamayama	1915 May 13 (?)	1915 Aug 27	Confirmed	Observations: Reported
Asamayama	1914 Nov 12	1914 Dec 16	Confirmed	Observations: Reported
Azumayama	[1914 Nov 12]	[1914 Nov 14 ± 1 days]	Uncertain
Toya	1910 Jul 25	1910 Nov	Confirmed	Observations: Reported
Asamayama	1909 Jan 29	1914 Jun 24	Confirmed	Observations: Reported
Shikotsu	1909 Jan 11	1909 Apr 22	Confirmed	Observations: Reported
Asamayama	1908 Aug 5	1908 Sep 23	Confirmed	Observations: Reported
Asamayama	1908 Feb 13 (?)	1908 Feb 19	Confirmed	Observations: Reported
Asamayama	1907 Aug 24	1907 Aug 24	Confirmed	Observations: Reported
Asamayama	1907 Jan 18	1907 Mar 28	Confirmed	Observations: Reported
Asamayama	1906 Apr 6	1906 Apr 6	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1905 Oct	1905 Oct	Confirmed	Observations: Reported
Hokkaido-Komagatake	1905 Aug 19	1905 Sep 1 (?)	Confirmed	Observations: Reported
Zaozan [Zaosan]	1905	Unknown	Confirmed	Observations: Reported
Asamayama	[1905]	[Unknown]	Uncertain
Asamayama	1904 Aug 4	1904 Aug 4	Confirmed	Observations: Reported
Asamayama	[1903 May 28]	[1903 Jun 30]	Uncertain
Kusatsu-Shiranesan	[1903]	[Unknown]	Uncertain
Asamayama	1902 Aug 5	1902 Aug 20 (?)	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1902 Jul 15	1902 Sep 24	Confirmed	Observations: Reported
Asamayama	1902 Feb 7	1902 Feb 7	Confirmed	Observations: Reported
Akita-Komagatake	1902	Unknown	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1900 Oct 1	1900 Oct 1	Confirmed	Observations: Reported
Adatarayama	1900 Jul 17	1900 Jul 17	Confirmed	Observations: Reported
Asamayama	1900 Jan 22	1901 Oct	Confirmed	Observations: Reported
Adatarayama	1899 Aug 24	1899 Nov 12	Confirmed	Observations: Reported
Asamayama	1899 Jul 10	1899 Aug 7	Confirmed	Observations: Reported
Asamayama	1899 Mar 11	Unknown	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1897 Jul 8	1897 Aug 16	Confirmed	Observations: Reported
Zaozan [Zaosan]	[1897 Jan 14]	[1897 Jan 14]	Uncertain
Azumayama	[1896 Sep 5]	[1896 Sep 19]	Uncertain
Zaozan [Zaosan]	[1896 Sep 1 (?)]	[Unknown]	Uncertain
Zaozan [Zaosan]	1896 Mar 8	1896 Mar 8	Confirmed	Observations: Reported
Zaozan [Zaosan]	1895 Aug 22	1895 Sep 28	Confirmed	Observations: Reported
Azumayama	1895 Mar 8	1895 Sep 13	Confirmed	Observations: Reported
Zaozan [Zaosan]	1895 Feb 15	1895 Mar 22	Confirmed	Observations: Reported
Shikotsu	1894 Aug 17	1894 Aug 17	Confirmed	Observations: Reported
Zaozan [Zaosan]	1894 Jul 3	1894 Jul 3	Confirmed	Observations: Reported
Asamayama	1894 Apr 6	1894 Jun 14	Confirmed	Observations: Reported
Azumayama	1894 Mar 16	1894 Apr 12	Confirmed	Observations: Reported
Shikotsu	1894 Feb 8	1894 Feb 8	Confirmed	Observations: Reported
Azumayama	1893 Nov 9	1893 Nov 10	Confirmed	Observations: Reported
Azumayama	1893 May 19	1893 Jul 13	Confirmed	Observations: Reported
Asamayama	[1892]	[Unknown]	Uncertain
Asamayama	1891 Oct (?)	1891 Nov (?)	Confirmed	Observations: Reported
Akita-Komagatake	1890 Dec	1891 Jan	Confirmed	Observations: Reported
Akita-Yakeyama	1890 Sep 23	Unknown	Confirmed	Observations: Reported
Nikko-Shiranesan	1890 Aug 22	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	[1890]	[Unknown]	Uncertain
Asamayama	1889 Dec 24	Unknown	Confirmed	Observations: Reported
Nikko-Shiranesan	1889 Dec 4	Unknown	Confirmed	Observations: Reported
Bandaisan	1888 Jul 15	1888 Jul 15	Confirmed	Observations: Reported
Hokkaido-Komagatake	1888 Apr 14	Unknown	Confirmed	Observations: Reported
Shikotsu	1887 Sep 3	1887 Oct 8	Confirmed	Observations: Reported
Akita-Yakeyama	1887	Unknown	Confirmed	Observations: Reported
Shikotsu	1886 Apr 13	1886 Apr 28	Confirmed	Observations: Reported
Shikotsu	1885 Jan 4	1885 Mar 26	Confirmed	Observations: Reported
Shikotsu	1883 Oct 7	1883 Nov 5	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1882 Aug 6	1882 Aug 16 (on or after)	Confirmed	Observations: Reported
Nasudake	1881 Jul 1	Unknown	Confirmed	Observations: Reported
Asamayama	1879 Sep 27	1879 Sep 28	Confirmed	Observations: Reported
Asamayama	[1878]	[Unknown]	Uncertain
Asamayama	1875 Jun 14	Unknown	Confirmed	Observations: Reported
Esan	1874 Jun 8	Unknown	Confirmed	Observations: Reported
Shikotsu	1874 Feb 8	1874 Feb 16	Confirmed	Observations: Reported
Zaozan [Zaosan]	1873 Aug	1873 Sep	Confirmed	Observations: Reported
Nikko-Shiranesan	1873 Mar 12	Unknown	Confirmed	Observations: Reported
Nikko-Shiranesan	1872 May 14	Unknown	Confirmed	Observations: Reported
Shikotsu	[1871 Dec 25]	[1871 Dec 28]	Uncertain
Nikko-Shiranesan	[1871 Apr]	[Unknown]	Uncertain
Asamayama	1869 May	1869 Oct 23	Confirmed	Observations: Reported
Zaozan [Zaosan]	1867 Oct 21	Unknown	Confirmed	Observations: Reported
Shikotsu	1867 Sep 8	Unknown	Confirmed	Observations: Reported
Akita-Yakeyama	1867	Unknown	Confirmed	Observations: Reported
Iwakisan	1863 Mar 23	Unknown	Confirmed	Observations: Reported
Hokkaido-Komagatake	1856 Sep 25	Unknown	Confirmed	Observations: Reported
Iwakisan	[1856 May 20]	[Unknown]	Uncertain
Niigata-Yakeyama	1854	Unknown	Confirmed	Observations: Reported
Toya	1853 Apr 22	1853 Sep	Confirmed	Observations: Reported
Niigata-Yakeyama	1852 Nov 1	1853 May (?)	Confirmed	Observations: Reported
Iwakisan	[1848 Jan 18]	[Unknown]	Uncertain
Esan	1846 Nov 18	Unknown	Confirmed	Observations: Reported
Nasudake	1846 Aug	Unknown	Confirmed	Observations: Reported
Iwakisan	1845 Apr 4	Unknown	Confirmed	Observations: Reported
Iwakisan	1844 Apr 7	Unknown	Confirmed	Observations: Reported
Azumayama	[1844]	[Unknown]	Uncertain
Chokaisan	1834 Jul 9	1834 Jul	Confirmed	Observations: Reported
Iwakisan	[1833 Apr 11]	[Unknown]	Uncertain
Zaozan [Zaosan]	1833	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1831 Nov 22	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1830	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1822 May 1	Unknown	Confirmed	Observations: Reported
Toya	1822 Mar 12	1822 Sep	Confirmed	Observations: Reported
Chokaisan	1821 May 23	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1821 Jan 27	1821 May 1	Confirmed	Observations: Reported
Kuttara	1820 ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	1815 Feb 28	Unknown	Confirmed	Observations: Reported
Adatarayama	[1813 Jan 10]	[Unknown]	Uncertain
Zaozan [Zaosan]	1809 Jun 12	1809 Dec 29	Confirmed	Observations: Reported
Bandaisan	1808 (?)	Unknown	Confirmed	Observations: Reported
Iwakisan	[1807 Mar 31]	[Unknown]	Uncertain
Zaozan [Zaosan]	1806 Jul 12	Unknown	Confirmed	Observations: Reported
Kusatsu-Shiranesan	1805	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1804 May (?)	Unknown	Confirmed	Observations: Reported
Shikotsu	1804	1817	Confirmed	Observations: Reported
Asamayama	1803 Nov 7	1803 Nov 21	Confirmed	Observations: Reported
Asamayama	1803 Jul 4	Unknown	Confirmed	Observations: Reported
Chokaisan	1800 Dec	1804 Jul (?)	Confirmed	Observations: Reported
Iwakisan	[1800 May 11]	[Unknown]	Uncertain
Azumayama	1800 (?)	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1796 Mar 24	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1794 Sep 22	1794 Dec (on or after)	Confirmed	Observations: Reported
Iwakisan	[1794 Apr 3]	[Unknown]	Uncertain
Iwakisan	[1793 Apr 2]	[Unknown]	Uncertain
Iwakisan	1790 Oct 9	Unknown	Confirmed	Observations: Reported
Oshima-Oshima	1790 Jan (?)	Unknown	Confirmed	Observations: Reported
Osorezan	1787 (in or before)	Unknown	Confirmed	Observations: Reported
Bandaisan	1787 (in or before)	Unknown	Confirmed	Observations: Reported
Oshima-Oshima	[1786]	[Unknown]	Uncertain
Hokkaido-Komagatake	[1784 Feb 8]	[Unknown]	Uncertain
Iwakisan	[1783 Dec 3]	[Unknown]	Uncertain
Asamayama	1783 May 9	1783 Aug 5	Confirmed	Observations: Reported
Kurikomayama	[1783]	[Unknown]	Uncertain
Iwakisan	1782 Dec 1 ± 30 days	1783 Mar 12	Confirmed	Observations: Reported
Iwakisan	[1782 Apr 12]	[Unknown]	Uncertain
Asamayama	[1779 Sep (?)]	[Unknown]	Uncertain
Asamayama	1777	Unknown	Confirmed	Observations: Reported
Asamayama	1776 Sep 5	Unknown	Confirmed	Observations: Reported
Niigata-Yakeyama	1773	Unknown	Confirmed	Observations: Reported
Asamayama	1769 Aug 6	Unknown	Confirmed	Unknown
Toya	1769 Jan 23	Unknown	Confirmed	Observations: Reported
Iwakisan	[1769]	[Unknown]	Uncertain
Bandaisan	[1767 ± 16 years]	[Unknown]	Uncertain
Hokkaido-Komagatake	[1765]	[Unknown]	Uncertain
Chokaisan	[1764]	[Unknown]	Uncertain
Asamayama	1762 Apr	Unknown	Confirmed	Observations: Reported
Oshima-Oshima	1759 Aug 19	Unknown	Confirmed	Observations: Reported
Asamayama	1755 Jul 5	1755 Aug 6	Confirmed	Observations: Reported
Asamayama	1754 Aug 7	1754 Aug 19	Confirmed	Observations: Reported
Asamayama	1752 Sep	1752 Oct	Confirmed	Observations: Reported
Kurikomayama	1744 Feb 3	Unknown	Confirmed	Observations: Reported
Oshima-Oshima	1741 Aug 18 (?)	1742 May	Confirmed	Observations: Reported
Chokaisan	1740 Jun (?)	1747 (?)	Confirmed	Observations: Reported
Shikotsu	1739 Aug 19	1739 Aug 31	Confirmed	Observations: Reported
Chokaisan	[1738 Dec 31 ± 365 days]	[Unknown]	Uncertain
Chokaisan	[1735]	[Unknown]	Uncertain
Asamayama	1733 Jul 30	Unknown	Confirmed	Observations: Reported
Asamayama	1732 Jul 30	Unknown	Confirmed	Observations: Reported
Iwatesan	1732 Jan 22	1732 Oct (?)	Confirmed	Observations: Reported
Asamayama	1731	Unknown	Confirmed	Observations: Reported
Asamayama	1729 Nov	1729 Dec	Confirmed	Observations: Reported
Asamayama	1729 Feb	Unknown	Confirmed	Observations: Reported
Asamayama	1728 Nov 10	Unknown	Confirmed	Observations: Reported
Kurikomayama	1726 ± 10 years	Unknown	Confirmed	Observations: Reported
Asamayama	1723 Aug 20	Unknown	Confirmed	Observations: Reported
Asamayama	1722 Nov 18	1723 Feb 5	Confirmed	Observations: Reported
Asamayama	1721 Jun 22	Unknown	Confirmed	Observations: Reported
Asamayama	1720 Jun 6	Unknown	Confirmed	Observations: Reported
Asamayama	1719 Jun 10	1719 Jun 11	Confirmed	Unknown
Bandaisan	[1719 (in or before)]	[Unknown]	Uncertain
Asamayama	1718 Sep 26	Unknown	Confirmed	Observations: Reported
Asamayama	1717 Sep 23	Unknown	Confirmed	Observations: Reported
Asamayama	1713 Jun 29	Unknown	Confirmed	Observations: Reported
Asamayama	1711 Apr 13	Unknown	Confirmed	Observations: Reported
Azumayama	1711 (?)	Unknown	Confirmed	Observations: Reported
Hokkaido-Komagatake	[1710 Jun 27]	[Unknown]	Uncertain
Asamayama	1710 Mar 25	1710 Apr 13	Confirmed	Observations: Reported
Iwakisan	[1709 Apr 23]	[Unknown]	Uncertain
Asamayama	1708 Dec 29	1709 Jan 8	Confirmed	Observations: Reported
Shikotsu	1707 ± 30 years	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	1706 Nov 20	Unknown	Confirmed	Observations: Reported
Asamayama	1704 Feb 5	1704 Feb 9	Confirmed	Observations: Reported
Asamayama	1703	Unknown	Confirmed	Observations: Reported
Asamayama	1695 Jun 23	Unknown	Confirmed	Observations: Reported
Hokkaido-Komagatake	1694 Jul 4	1694 Jul 6	Confirmed	Observations: Reported
Iwakisan	[1694 Jun 19]	[Unknown]	Uncertain
Zaozan [Zaosan]	1694 May 29	1694 Aug 30 (?)	Confirmed	Observations: Reported
Toya	1690 ± 10 years	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	[1689 Jun 22]	[Unknown]	Uncertain
Iwatesan	[1687 Apr 14]	[1687 Jul]	Uncertain
Iwatesan	1686 Mar 26	1686 Mar 27	Confirmed	Observations: Reported
Akita-Yakeyama	1678 Feb 22 (?)	Unknown	Confirmed	Observations: Reported
Iwakisan	[1672 Jul 12]	[1672 Jul 28]	Uncertain
Zaozan [Zaosan]	1670 Apr 26	1670 Sep 26	Confirmed	Observations: Reported
Asamayama	1669 Apr 5	1669 Apr 15	Confirmed	Observations: Reported
Zaozan [Zaosan]	1669	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1668 Aug	Unknown	Confirmed	Observations: Reported
Shikotsu	1667 Sep 23	1667 Sep 26 (?)	Confirmed	Observations: Reported
Toya	1663 Aug 16	1663 Sep 5 ± 4 days	Confirmed	Observations: Reported
Asamayama	1661 Oct 21	Unknown	Confirmed	Observations: Reported
Asamayama	1661 Apr 14	1661 Apr 27	Confirmed	Observations: Reported
Asamayama	1660 Apr 8 (?)	Unknown	Confirmed	Observations: Reported
Asamayama	1659 Jul 24	Unknown	Confirmed	Observations: Reported
Chokaisan	1659 Apr	1663 ± 1 years	Confirmed	Observations: Reported
Asamayama	1658 Jul 24	Unknown	Confirmed	Observations: Reported
Asamayama	1657 Nov 25	Unknown	Confirmed	Observations: Reported
Asamayama	1656 Dec 10	Unknown	Confirmed	Observations: Reported
Asamayama	1655 Nov 25	Unknown	Confirmed	Observations: Reported
Asamayama	[1653]	[1654]	Uncertain
Asamayama	1652 Apr 12	Unknown	Confirmed	Observations: Reported
Asamayama	1651 Apr 12	Unknown	Confirmed	Observations: Reported
Asamayama	[1650 Jul 2 (?)]	[Unknown]	Uncertain
Asamayama	1649 Aug 17 (?)	1649 Aug 18 (?)	Confirmed	Observations: Reported
Nikko-Shiranesan	1649 Feb	Unknown	Confirmed	Observations: Reported
Asamayama	1648 Aug 30 (?)	Unknown	Confirmed	Observations: Reported
Asamayama	1648 Mar 20 (?)	Unknown	Confirmed	Observations: Reported
Asamayama	1647 Feb 18	1647 Mar 25	Confirmed	Observations: Reported
Asamayama	1645 Feb 24 (?)	1645 May 21	Confirmed	Observations: Reported
Asamayama	1644 Feb 20	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1641	Unknown	Confirmed	Observations: Reported
Hokkaido-Komagatake	1640 Jul 31	1640 Oct 9	Confirmed	Observations: Reported
Toya	1638 Jul 25	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1630	Unknown	Confirmed	Observations: Reported
Toya	1626 May 19	1626 Jul (?)	Confirmed	Observations: Reported
Nikko-Shiranesan	1625	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1623 May 15 (?)	1624 Nov 15 (?)	Confirmed	Observations: Reported
Zaozan [Zaosan]	1622	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1620	Unknown	Confirmed	Observations: Reported
Iwakisan	1618 Jan 31	Unknown	Confirmed	Observations: Reported
Toya	[1611 Oct]	[Unknown]	Uncertain
Bandaisan	[1611]	[Unknown]	Uncertain
Asamayama	1609 Apr 5	Unknown	Confirmed	Observations: Reported
Asamayama	1605 Dec	1606 Feb	Confirmed	Observations: Reported
Iwakisan	[1605 Apr 10]	[Unknown]	Uncertain
Iwakisan	1604 Feb 7	Unknown	Confirmed	Observations: Reported
Asamayama	[1604]	[Unknown]	Uncertain
Iwakisan	1600 Jul 23	1600 Jul 25	Confirmed	Observations: Reported
Iwakisan	1600 Feb 22	Unknown	Confirmed	Observations: Reported
Asamayama	1600 Jan 14	1600 Jan 28 (?)	Confirmed	Observations: Reported
Asamayama	1598 May 13	Unknown	Confirmed	Observations: Reported
Iwakisan	[1597 Jun 13]	[Unknown]	Uncertain
Asamayama	1597 Apr 17	Unknown	Confirmed	Observations: Reported
Iwakisan	[1597 Jan]	[Unknown]	Uncertain
Asamayama	1596 May 1	1596 Sep	Confirmed	Observations: Reported
Asamayama	1595 Jun 1	Unknown	Confirmed	Observations: Reported
Asamayama	1591 Nov 29	Unknown	Confirmed	Observations: Reported
Asamayama	1591 Apr 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Asamayama	1590 Apr 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Asamayama	1582 Jul 3	Unknown	Confirmed	Observations: Reported
Asamayama	1582 Feb 16	Unknown	Confirmed	Observations: Reported
Chokaisan	[1560]	[Unknown]	Uncertain
Hakkodasan	1550 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Shikotsu	1550 ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hiuchigatake	1544 Jul 28	Unknown	Confirmed	Observations: Reported
Asamayama	[1534]	[Unknown]	Uncertain
Asamayama	[1532 Jan 14]	[Unknown]	Uncertain
Asamayama	1528	Unknown	Confirmed	Observations: Reported
Asamayama	1527 May	Unknown	Confirmed	Observations: Reported
Asamayama	[1518]	[Unknown]	Uncertain
Shikotsu	1500 ± 150 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chokaisan	[1477]	[Unknown]	Uncertain
Kusatsu-Shiranesan	1470 ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Iwatesan	1450 ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kurikomayama	1450 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	[1427 Jul 7]	[Unknown]	Uncertain
Nasudake	1410 Mar 5	Unknown	Confirmed	Observations: Reported
Nasudake	1408 Feb 24	Unknown	Confirmed	Observations: Reported
Nasudake	1404 Feb 11	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1400 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	1397 Feb 17	Unknown	Confirmed	Observations: Reported
Akita-Yakeyama	1390 ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Niigata-Yakeyama	1361	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	[1350 (?)]	[Unknown]	Uncertain
Esan	1350 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hakkodasan	1340 ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	[1331]	[1333]	Uncertain
Azumayama	1331	Unknown	Confirmed	Observations: Reported
Iwatesan	1300 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	[1281 Jul 3]	[Unknown]	Uncertain
Akagisan	[1251 May 18]	[Unknown]	Uncertain
Zaozan [Zaosan]	1230 Nov 29 (?)	Unknown	Confirmed	Observations: Reported
Zaozan [Zaosan]	1227 Oct (?)	Unknown	Confirmed	Observations: Reported
Yokodake	1200 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	1183 May 28 (?)	Unknown	Confirmed	Observations: Reported
Asamayama	[1128]	[Unknown]	Uncertain
Asamayama	1108 Aug 29	1108 Oct	Confirmed	Observations: Reported
Akita-Komagatake	1100 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Chokaisan	[0999]	[Unknown]	Uncertain
Niigata-Yakeyama	0989	Unknown	Confirmed	Observations: Reported
Adatarayama	0950 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Chokaisan	[0948 Dec 31 ± 365 days]	[Unknown]	Uncertain
Chokaisan	0939 May 15	Unknown	Confirmed	Observations: Reported
Towada	0915 Aug 17	Unknown	Confirmed	Observations: Reported
Niigata-Yakeyama	0887	Unknown	Confirmed	Observations: Reported
Chokaisan	[0884 Jul 26]	[0884 Aug]	Uncertain
Zaozan [Zaosan]	0884 (?)	Unknown	Confirmed	Observations: Reported
Chokaisan	0871 May 5	Unknown	Confirmed	Observations: Reported
Chokaisan	[0861 May]	[Unknown]	Uncertain
Chokaisan	[0857 May]	[Unknown]	Uncertain
Chokaisan	[0856]	[Unknown]	Uncertain
Chokaisan	[0839 Oct 14]	[Unknown]	Uncertain
Naruko	0837 May 27	Unknown	Confirmed	Observations: Reported
Chokaisan	0830 Jan	Unknown	Confirmed	Observations: Reported
Chokaisan	0817 ± 7 years	Unknown	Confirmed	Observations: Reported
Niigata-Yakeyama	0813 (?)	Unknown	Confirmed	Observations: Reported
Akita-Yakeyama	[0807 Nov 1]	[Unknown]	Uncertain
Akita-Komagatake	0807 (?)	Unknown	Confirmed	Observations: Reported
Bandaisan	0806	Unknown	Confirmed	Observations: Reported
Chokaisan	[0804]	[0806]	Uncertain
Nikko-Shiranesan	0800 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zaozan [Zaosan]	[0773 Nov (?)]	[Unknown]	Uncertain
Chokaisan	[0717 Jul]	[Unknown]	Uncertain
Chokaisan	0711 ± 3 years	Unknown	Confirmed	Observations: Reported
Asamayama	0685 Apr	Unknown	Confirmed	Unknown
Chokaisan	[0610 ± 18 years]	[Unknown]	Uncertain
Azumayama	0600 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chokaisan	[0577 Dec 1 ± 30 days]	[0578 Jul 15 ± 45 days]	Uncertain
Chokaisan	[0573 Mar (?)]	[Unknown]	Uncertain
Akita-Yakeyama	0570 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Harunasan	0550 Jun 1 ± 10 years ± 30 days	Unknown	Confirmed	Correlation: Anthropology
Harunasan	0520 Jun 1 ± 10 years ± 30 days	Unknown	Confirmed	Correlation: Anthropology
Harunasan	0450 ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Hakkodasan	0450 (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	0400 ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	0350 Nov 15 ± 10 years ± 15 days	Unknown	Confirmed	Correlation: Anthropology
Nasudake	0330 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	0300 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	0250 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Oshima-Oshima	0250 ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kuttara	0200 ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	0150 (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kusatsu-Shiranesan	0050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Shikotsu	0050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Adatarayama	0050 BCE ± 900 years	Unknown	Confirmed	Correlation: Tephrochronology
Akita-Komagatake	0050 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hakkodasan	0050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Shikotsu	0100 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Azumayama	0150 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	0200 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	0250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akita-Komagatake	0350 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	0350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Nikko-Shiranesan	0400 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Yokodake	0400 BCE (in or after)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Esan	0440 BCE ± 46 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chokaisan	0450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	0450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kusatsu-Shiranesan	0550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Bandaisan	0550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwakisan	0550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Shikotsu	0550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Adatarayama	0590 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chokaisan	0650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Nasudake	0700 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Niigata-Yakeyama	0700 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Myokosan	0750 BCE	Unknown	Confirmed	Correlation: Tephrochronology
Towada	0750 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Naruko	0800 BCE (in or before)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Oshima-Oshima	0800 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Azumayama	0950 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Chokaisan	1050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwakisan	1050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Esan	1050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Yoteizan	1050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kusatsu-Shiranesan	1120 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Asamayama	1130 BCE ± 1430 years	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	1150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Hakkodasan	1150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Myokosan	1200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	1250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Yakeyama	1250 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Naruko	1350 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Naruko	1400 BCE (in or before)	Unknown	Confirmed	Correlation: Tephrochronology
Nasudake	1440 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Akita-Komagatake	1450 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	1500 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Adatarayama	1550 BCE ± 1100 years	Unknown	Confirmed	Correlation: Tephrochronology
Zaozan [Zaosan]	1600 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	1650 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Niigata-Yakeyama	1750 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bandaisan	1800 BCE ± 1250 years	Unknown	Confirmed	Correlation: Tephrochronology
Azumayama	1800 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Niigata-Yakeyama	1900 BCE ± 1050 years	Unknown	Confirmed	Correlation: Tephrochronology
Nasudake	2000 BCE ± 1450 years	Unknown	Confirmed	Correlation: Tephrochronology
Nikko-Shiranesan	2000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zaozan [Zaosan]	2000 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	2000 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	2050 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Megata	2050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Myokosan	2100 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Hakkodasan	2250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	2300 BCE ± 75 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Asamayama	2550 BCE ± 500 years	Unknown	Confirmed	Correlation: Anthropology
Zaozan [Zaosan]	2600 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Adatarayama	2600 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	2700 BCE ± 200 years	Unknown	Confirmed	Correlation: Tephrochronology
Azumayama	2750 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Myokosan	2750 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hakkodasan	2850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Myokosan	2900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	2950 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Azumayama	3000 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Omanago Group	3050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Iwatesan	3050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Akita-Yakeyama	3050 BCE (?)	Unknown	Confirmed	Radiogenic: Thermoluminescence
Iwatesan	3250 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Zaozan [Zaosan]	3350 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Numazawa	3400 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Myokosan	3450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	3450 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Kurikomayama	3540 BCE ± 2480 years	Unknown	Confirmed	Correlation: Tephrochronology
Yoteizan	3550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Myokosan	3700 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	3750 BCE ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Kusatsu-Shiranesan	3750 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bandaisan	3850 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zaozan [Zaosan]	3850 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Esan	3900 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Myokosan	4000 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwakisan	4050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	4100 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	4150 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Azumayama	4150 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nikko-Shiranesan	4150 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Towada	4150 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Adatarayama	4300 BCE ± 850 years	Unknown	Confirmed	Correlation: Tephrochronology
Myokosan	4300 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hokkaido-Komagatake	4350 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	4350 BCE ± 950 years	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	4350 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Naruko	4400 BCE (in or after)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	4450 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Hokkaido-Komagatake	4500 BCE ± 150 years	Unknown	Confirmed	Correlation: Tephrochronology
Azumayama	4550 BCE ± 1000 years	Unknown	Confirmed	Correlation: Tephrochronology
Takaharayama	4570 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hokkaido-Komagatake	4600 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Toya	4600 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bandaisan	4650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	4700 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Myokosan	4750 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	4850 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Niseko	4900 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	4900 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bandaisan	5050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hachimantai	5350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Azumayama	5400 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	5500 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	5550 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Towada	5550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Zaozan [Zaosan]	5600 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwatesan	5650 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Azumayama	5700 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Esan	5770 BCE ± 924 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	5950 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	6050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hiuchigatake	6050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Adatarayama	6150 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	6150 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Towada	6250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kusatsu-Shiranesan	6270 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Iwatesan	6300 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	6350 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bandaisan	6350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	6400 BCE ± 1050 years	Unknown	Confirmed	Correlation: Tephrochronology
Iwatesan	6450 BCE ± 1600 years	Unknown	Confirmed	Correlation: Tephrochronology
Kusatsu-Shiranesan	6550 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Toya	6550 BCE ± 1500 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Adatarayama	6650 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Esan	6670 BCE ± 27 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Shikotsu	6950 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Megata	7050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Akita-Komagatake	7100 BCE ± 900 years	Unknown	Confirmed	Correlation: Tephrochronology
Asamayama	7200 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Towada	7250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Bandaisan	7450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Zaozan [Zaosan]	7600 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nasudake	7850 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	7850 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hachimantai	7900 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Iwakisan	8050 BCE (?)	Unknown	Confirmed	Isotopic: K/Ar
Adatarayama	8050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kuttara	8050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Towada	8250 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Akita-Komagatake	8300 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Nasudake	8550 BCE ± 1500 years	Unknown	Confirmed	Correlation: Tephrochronology
Akita-Komagatake	8800 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Towada	9490 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Nantaisan	9540 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (calibrated)

Izu Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Sumisujima	[2024 Sep 18]	[2024 Oct 5]	Uncertain
Myojinsho	[2023 Jan 26]	[2023 Jan 26]	Uncertain
Myojinsho	[2018 Mar 24]	[2018 Mar 24]	Uncertain
Hakoneyama	2015 Jun 29	2015 Jul 1	Confirmed	Observations: Reported
Izu-Torishima	[2013 Jul 6]	[2013 Jul 6]	Uncertain
Miyakejima	2010 Apr 10	2010 Jul 21	Confirmed	Observations: Reported
Miyakejima	2009 Apr 1	2009 Apr 1	Confirmed	Observations: Reported
Miyakejima	2008 May 8	2008 May 8	Confirmed	Observations: Reported
Miyakejima	2008 Jan 7	2008 Jan 7	Confirmed	Observations: Reported
Miyakejima	2006 Aug 23	2006 Aug 23	Confirmed	Observations: Reported
Miyakejima	2006 Feb 17	2006 Feb 17	Confirmed	Observations: Reported
Miyakejima	2005 Apr 12	2005 May 18	Confirmed	Observations: Reported
Sumisujima	[2005 Mar 8]	[2005 Mar 8]	Uncertain
Miyakejima	2004 Nov 30	2004 Dec 9	Confirmed	Observations: Reported
Sumisujima	[2003 Nov 6]	[2003 Nov 6]	Uncertain
Sumisujima	[2002 Sep 4]	[2002 Sep 4]	Uncertain
Izu-Torishima	2002 Aug 12	2002 Aug 20	Confirmed	Observations: Reported
Sumisujima	[2001 Oct 31]	[2002 Feb 28]	Uncertain
Miyakejima	2001 Jan 11	2002 Nov 24	Confirmed	Observations: Reported
Sumisujima	[2000 Oct 30]	[2000 Oct 30]	Uncertain
Miyakejima	2000 Jun 27	2000 Sep 28	Confirmed	Observations: Reported
Sumisujima	[1998 Oct 27]	[1999 Jan 13]	Uncertain
Sumisujima	[1997 Nov 21]	[1997 Nov 21]	Uncertain
Sumisujima	[1996 Jan 22]	[1996 Jan 22]	Uncertain
Sumisujima	[1995 Jul 5]	[1995 Jul 7]	Uncertain
Sumisujima	[1994 Jul 27]	[1994 Jul 27]	Uncertain
Sumisujima	[1994 Jan 17]	[1994 Jan 17]	Uncertain
Sumisujima	[1993 Sep 8]	[1993 Sep 10]	Uncertain
Sumisujima	[1992 Aug 5]	[1992 Oct 7]	Uncertain
Sumisujima	[1991 Nov 5]	[1991 Nov 5]	Uncertain
Izu-Oshima	1990 Oct 4	1990 Oct 4	Confirmed	Observations: Reported
Sumisujima	[1989 Jul 18]	[1989 Jul 18]	Uncertain
Izu-Tobu	1989 Jul 13	1989 Jul 13	Confirmed	Observations: Reported
Sumisujima	[1989 Jan 18]	[1989 Jan 18]	Uncertain
Myojinsho	[1988 Mar 18]	[1988 Mar 19]	Uncertain
Izu-Oshima	1987 Nov 16	1988 Jan 27	Confirmed	Observations: Reported
Myojinsho	[1987 Oct 21]	[1987 Dec 9]	Uncertain
Izu-Oshima	1986 Nov 15	1986 Dec 18	Confirmed	Observations: Reported
Myojinsho	[1986 Oct 24]	[1986 Oct 24]	Uncertain
Miyakejima	1983 Oct 3	1983 Oct 4	Confirmed	Observations: Reported
Myojinsho	[1983 May 12]	[Unknown]	Uncertain
Myojinsho	[1982 Aug 10]	[Unknown]	Uncertain
Myojinsho	[1980 Nov 15]	[1980 Dec 23]	Uncertain
Myojinsho	[1979 Jul 13]	[Unknown]	Uncertain
Sumisujima	[1977 Oct 16 ± 15 days]	[1977 Oct 16 ± 15 days]	Uncertain
Sumisujima	[1976 Aug 16 ± 15 days]	[1976 Aug 16 ± 15 days]	Uncertain
Izu-Torishima	1975 Oct 2	Unknown	Confirmed	Observations: Reported
Sumisujima	[1975 Aug 13]	[1975 Sep 26]	Uncertain
Sofugan	[1975 Jul 2 ± 182 days]	[Unknown]	Uncertain
Sumisujima	[1974 Jul 6]	[1974 Jul 6]	Uncertain
Izu-Oshima	1974 Feb 28	1974 Jun 20	Confirmed	Observations: Reported
Izu-Oshima	1971 Apr 5	1971 Apr 5	Confirmed	Observations: Reported
Myojinsho	[1971 Mar 18]	[Unknown]	Uncertain
Izu-Oshima	1970 Jun 30	1970 Nov 12	Confirmed	Observations: Reported
Myojinsho	1970 Jan 29	1970 Jun 16 ± 15 days	Confirmed	Observations: Reported
Izu-Oshima	1970 Jan 26	1970 Jan 31	Confirmed	Observations: Reported
Izu-Oshima	1969 Jan 19	1969 Jul 16 ± 15 days	Confirmed	Observations: Reported
Izu-Oshima	1968 Jul 28	1968 Jul 28	Confirmed	Observations: Reported
Izu-Oshima	1968 Jan 19	1968 Jan 19	Confirmed	Observations: Reported
Izu-Oshima	1967 May 16 ± 15 days	1967 Aug 16 ± 15 days	Confirmed	Observations: Reported
Izu-Oshima	1965 Nov 25	1966 Jun 13	Confirmed	Observations: Reported
Izu-Torishima	1965 Nov 13	1965 Dec 5 ± 4 days	Confirmed	Observations: Hydrophonic
Miyakejima	1962 Aug 24	1962 Aug 27	Confirmed	Observations: Reported
Izu-Oshima	1962 Jan 16 ± 15 days	1965 May 16 ± 15 days	Confirmed	Observations: Reported
Izu-Oshima	[1961 Jul 2 ± 182 days]	[Unknown]	Uncertain
Myojinsho	1960 Jul 21	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1959 Oct 16 ± 15 days	1960 Nov 16 ± 15 days	Confirmed	Observations: Reported
Myojinsho	1959 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1959 Jan 16 ± 15 days	1959 Jan 16 ± 15 days	Confirmed	Observations: Reported
Myojinsho	1958 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1958 Apr 17	1958 Jun 13	Confirmed	Observations: Reported
Izu-Oshima	1957 Aug 16 ± 15 days	1957 Dec 16 ± 15 days	Confirmed	Observations: Reported
Myojinsho	1957 May 2	Unknown	Confirmed	Observations: Reported
Izu-Oshima	[1956 Aug 25]	[1956 Aug 26]	Uncertain
Izu-Oshima	1956 Jan 3	1956 Jan 6	Confirmed	Observations: Reported
Myojinsho	1955 Jun 25	Unknown	Confirmed	Observations: Reported
Myojinsho	1954 Nov 4	1954 Nov 5	Confirmed	Observations: Reported
Izu-Oshima	1953 Oct 5	1954 Feb 8	Confirmed	Observations: Reported
Myojinsho	1952 Sep 16	1953 Oct 16 ± 15 days	Confirmed	Observations: Reported
Izu-Oshima	1950 Jul 16	1951 Jun 28	Confirmed	Observations: Reported
Myojinsho	1946 Feb 4 ± 4 days	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1940 Aug 18	1940 Aug 19	Confirmed	Observations: Reported
Miyakejima	1940 Jul 12	1940 Aug 5	Confirmed	Observations: Reported
Izu-Oshima	1939 Sep 1	1939 Sep 16	Confirmed	Observations: Reported
Izu-Torishima	1939 Aug 17	1939 Dec 26 ± 5 days	Confirmed	Observations: Reported
Izu-Oshima	1939 Feb	1939 Feb	Confirmed	Observations: Reported
Izu-Oshima	1938 Aug 11	1938 Aug 11	Confirmed	Observations: Reported
Izu-Oshima	1937 Jul 17	1937 Aug	Confirmed	Observations: Reported
Izu-Oshima	1935 Apr 26	1935 May 6 (?)	Confirmed	Observations: Reported
Izu-Oshima	[1934 Sep]	[Unknown]	Uncertain
Myojinsho	1934 May	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1934 Apr 15	1934 Apr 25 (?)	Confirmed	Observations: Reported
Izu-Oshima	1933 Oct 14	1933 Nov	Confirmed	Observations: Reported
Izu-Tobu	[1930 Mar 1 ± 30 days]	[Unknown]	Uncertain
Izu-Oshima	1928 Aug 7	1928 Aug 8	Confirmed	Observations: Reported
Izu-Oshima	1922 Dec 8	1923 Jan 30	Confirmed	Observations: Reported
Izu-Oshima	[1920]	[Unknown]	Uncertain
Izu-Oshima	1919 May 18	1919 Dec 23	Confirmed	Observations: Reported
Sumisujima	1916 Jun 21	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1915 Oct 10	1915 Oct 25 (?)	Confirmed	Observations: Reported
Myojinsho	1915 Feb	1915 Jul	Confirmed	Observations: Reported
Izu-Oshima	1914 May 15	1914 May 26	Confirmed	Observations: Reported
Izu-Oshima	1912 Feb 23	1913 Jan 25	Confirmed	Observations: Reported
Izu-Oshima	1910 Dec	Unknown	Confirmed	Observations: Reported
Myojinsho	1906 Apr 7	1906 Apr 14	Confirmed	Observations: Reported
Izu-Torishima	1902 Aug 7	1902 Aug 24	Confirmed	Observations: Reported
Myojinsho	1896	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1876 Dec 27	1877 Feb 5	Confirmed	Observations: Reported
Miyakejima	1874 Jul 3	1874 Jul 17 (?)	Confirmed	Observations: Reported
Sumisujima	[1873]	[Unknown]	Uncertain
Izu-Torishima	1871 Apr	Unknown	Confirmed	Observations: Reported
Myojinsho	1871	Unknown	Confirmed	Unknown
Sumisujima	1870 May	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1870	Unknown	Confirmed	Observations: Reported
Myojinsho	1869 May 6	Unknown	Confirmed	Unknown
Izu-Oshima	[1868 Dec 31 ± 365 days]	[Unknown]	Uncertain
Fujisan	[1854 Dec 23]	[1855 Jan 9]	Uncertain
Izu-Oshima	1846	Unknown	Confirmed	Observations: Reported
Izu-Oshima	[1837]	[1838]	Uncertain
Miyakejima	1835 Nov 11 (?)	Unknown	Confirmed	Observations: Reported
Izu-Oshima	[1827]	[Unknown]	Uncertain
Izu-Oshima	1822	1824	Confirmed	Observations: Reported
Izu-Oshima	1821 (?)	Unknown	Confirmed	Sidereal: Varve Count
Miyakejima	1811 Jan 27	1811 Jan 28	Confirmed	Observations: Reported
Izu-Oshima	1803 Sep 26 (?)	1803 Nov 14	Confirmed	Observations: Reported
Izu-Oshima	1792	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1789	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1783	1786	Confirmed	Observations: Reported
Aogashima	1780 Jul 27	1785 May (?)	Confirmed	Observations: Reported
Izu-Oshima	1777 Aug 31	1779	Confirmed	Observations: Reported
Fujisan	[1770 Sep 16]	[Unknown]	Uncertain
Miyakejima	1763 Aug 17	1769	Confirmed	Observations: Reported
Miyakejima	1712 Feb 4	1714	Confirmed	Observations: Reported
Miyakejima	[1709 Apr 23]	[Unknown]	Uncertain
Fujisan	[1708 Dec]	[1709 Jan 16 (?)]	Uncertain
Fujisan	1707 Dec 16	1708 Feb 24 (?)	Confirmed	Observations: Reported
Hachijojima	[1707]	[Unknown]	Uncertain
Fujisan	1700	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1695 Apr 12 (?)	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1684 Feb 14	1690	Confirmed	Observations: Reported
Sumisujima	[1672 (?)]	[Unknown]	Uncertain
Aogashima	1670	1680	Confirmed	Observations: Reported
Aogashima	1652	Unknown	Confirmed	Observations: Reported
Miyakejima	1643 Mar 31	1643 Apr	Confirmed	Observations: Reported
Izu-Oshima	1637 Aug 26	1638 Apr	Confirmed	Observations: Reported
Izu-Oshima	1634	Unknown	Confirmed	Observations: Reported
Fujisan	[1627]	[Unknown]	Uncertain
Izu-Oshima	1623	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1612 Oct 15 ± 180 days	Unknown	Confirmed	Observations: Reported
Hachijojima	1606 Jan 23	Unknown	Confirmed	Observations: Reported
Hachijojima	1605 Oct 27	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1600 Oct ± 180 days	Unknown	Confirmed	Observations: Reported
Miyakejima	1595 Nov 22	Unknown	Confirmed	Observations: Reported
Fujisan	[1560 Jan 4]	[Unknown]	Uncertain
Izu-Oshima	1552 Oct 7	1552 Oct 15	Confirmed	Observations: Reported
Miyakejima	1535 Mar	Unknown	Confirmed	Observations: Reported
Hachijojima	1518 Feb	1523	Confirmed	Observations: Reported
Fujisan	1511 Sep 1 ± 30 days	Unknown	Confirmed	Observations: Reported
Hachijojima	1487 Dec 7	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1471 (?)	Unknown	Confirmed	Sidereal: Varve Count
Miyakejima	1469 Dec 24	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1442 Aug	1443	Confirmed	Observations: Reported
Fujisan	1435 Dec 31 ± 60 days	Unknown	Confirmed	Observations: Reported
Fujisan	[1427 Jun 28]	[Unknown]	Uncertain
Izu-Oshima	1421 May 14	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1416 Sep 2	1417 (?)	Confirmed	Observations: Reported
Izu-Oshima	1415 May 21	Unknown	Confirmed	Observations: Reported
Izu-Oshima	1338 Sep 15 ± 5 days	1338 Nov 15 ± 5 days	Confirmed	Observations: Reported
Izu-Oshima	1307 (?)	Unknown	Confirmed	Sidereal: Varve Count
Izu-Oshima	1245 (?)	Unknown	Confirmed	Sidereal: Varve Count
Izu-Oshima	1183 (?)	Unknown	Confirmed	Sidereal: Varve Count
Hakoneyama	1170 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Miyakejima	1154 Nov	Unknown	Confirmed	Observations: Reported
Izu-Oshima	[1112 Nov 18]	[1112 Dec 26 ± 5 days]	Uncertain
Miyakejima	1085	Unknown	Confirmed	Observations: Reported
Fujisan	1083 Apr 17	Unknown	Confirmed	Observations: Reported
Fujisan	1033 Jan 19 (?)	Unknown	Confirmed	Observations: Reported
Fujisan	[1017 Oct 1 ± 30 days]	[Unknown]	Uncertain
Fujisan	0999 Mar	Unknown	Confirmed	Observations: Reported
Fujisan	[0993 Sep 1 ± 30 days]	[Unknown]	Uncertain
Fujisan	[0952 Mar (?)]	[Unknown]	Uncertain
Fujisan	0937 Dec 18	Unknown	Confirmed	Observations: Reported
Izu-Oshima	[0936]	[Unknown]	Uncertain
Fujisan	0932 Nov 19	Unknown	Confirmed	Observations: Reported
Izu-Oshima	0886 Jun 29 (?)	Unknown	Confirmed	Observations: Reported
Niijima	0886 Jun 29	Unknown	Confirmed	Observations: Reported
Fujisan	0870 Aug	Unknown	Confirmed	Observations: Reported
Fujisan	0864 Jun 12 (?)	0866 Feb 1 ± 30 days	Confirmed	Observations: Reported
Niijima	0856 (?)	0857 (?)	Confirmed	Observations: Reported
Izu-Oshima	0854 Sep 14 (?)	0856 (?)	Confirmed	Observations: Reported
Miyakejima	0850 (?)	Unknown	Confirmed	Observations: Reported
Hachijojima	0850 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kozushima	0838 Aug 2 (?)	Unknown	Confirmed	Observations: Reported
Izu-Oshima	0838 Aug (?) (?)	Unknown	Confirmed	Observations: Reported
Miyakejima	0832 Jun 23	Unknown	Confirmed	Observations: Reported
Kozushima	[0832]	[Unknown]	Uncertain
Fujisan	0830	Unknown	Confirmed	Observations: Reported
Fujisan	0826 Dec 31 ± 30 days	Unknown	Confirmed	Observations: Reported
Izu-Oshima	0822 (?)	Unknown	Confirmed	Sidereal: Varve Count
Fujisan	0800 Apr 11	0802 Feb 6 (on or after)	Confirmed	Observations: Reported
Fujisan	0781 Jul	0781 Jul	Confirmed	Observations: Reported
Miyakejima	0750 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	0720 ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Oshima	0713 (?)	Unknown	Confirmed	Sidereal: Varve Count
Izu-Oshima	0700 (?)	Unknown	Confirmed	Sidereal: Varve Count
Izu-Oshima	0684 Nov 29 (?)	Unknown	Confirmed	Observations: Reported
Izu-Oshima	0680 (?)	0681 Mar 26 (on or after)	Confirmed	Observations: Reported
Izu-Oshima	0654 (?)	Unknown	Confirmed	Observations: Reported
Izu-Oshima	0625 (?)	Unknown	Confirmed	Sidereal: Varve Count
Izu-Oshima	0600 (?)	Unknown	Confirmed	Sidereal: Varve Count
Izu-Oshima	0580 (?)	Unknown	Confirmed	Sidereal: Varve Count
Fujisan	0530 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0520 ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Miyakejima	0500 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	0470 ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Fujisan	0400 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0370 ± 200 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Fujisan	0350 ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Oshima	0340 ± 200 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Miyakejima	0320 ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0300 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Miyakejima	0260 ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	0250 ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0250 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0240 ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Fujisan	0220 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0200 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	0150 ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	0100 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0050 (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hakoneyama	0050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Miyakejima	0050 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Kozushima	0100 BCE ± 950 years	Unknown	Confirmed	Chem/Bio: Hydration Rind
Fujisan	0100 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Hachijojima	0150 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Izu-Oshima	0150 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0190 BCE ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Hachijojima	0350 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	0520 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Izu-Oshima	0600 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Miyakejima	0600 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Aogashima	0600 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Tobu	0750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Kozushima	0750 BCE ± 700 years	Unknown	Confirmed	Chem/Bio: Hydration Rind
Fujisan	0780 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Izu-Oshima	0900 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	0930 BCE (in or after)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Miyakejima	0950 BCE ± 200 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	1010 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	1030 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hakoneyama	1050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	1050 BCE ± 200 years	Unknown	Confirmed	Correlation: Tephrochronology
Aogashima	1100 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Tobu	1150 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hachijojima	1150 BCE ± 700 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	1200 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Aogashima	1200 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hakoneyama	1200 BCE (?)	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hachijojima	1250 BCE ± 800 years	Unknown	Confirmed	Correlation: Tephrochronology
Miyakejima	1250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Niijima	1250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	1300 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	1350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hakoneyama	1400 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	1450 BCE ± 100 years	Unknown	Confirmed	Correlation: Tephrochronology
Miyakejima	1450 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	1450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	1510 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Miyakejima	1800 BCE ± 50 years	Unknown	Confirmed	Correlation: Tephrochronology
Aogashima	1800 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	1850 BCE ± 150 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Miyakejima	2000 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Hachijojima	2050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	2050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Tobu	2050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Tobu	2100 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	2450 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Hachijojima	2450 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Hachijojima	2550 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	2550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	2550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hachijojima	2700 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	2800 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Miyakejima	2900 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	3050 BCE (?)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Hachijojima	3350 BCE ± 1300 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	3650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	3690 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Hakoneyama	3700 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Izu-Oshima	3750 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	4000 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Mikurajima	4100 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	4120 BCE ± 300 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	4250 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Niijima	4350 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	4450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Toshima	4550 BCE ± 2550 years	Unknown	Confirmed	Correlation: Tephrochronology
Hachijojima	4650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	4730 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	4920 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Hachijojima	5020 BCE ± 370 years	Unknown	Confirmed	Correlation: Tephrochronology
Mikurajima	5050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	5070 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Oshima	5450 BCE ± 75 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	5540 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Oshima	5550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Niijima	5950 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hakoneyama	6000 BCE ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Fujisan	6050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	6050 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	6240 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Miyakejima	6450 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	6550 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	6580 BCE (in or before)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Oshima	6650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	7150 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	7310 BCE ± 500 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Fujisan	7530 BCE ± 300 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Izu-Oshima	7650 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Hachijojima	7650 BCE ± 3000 years	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	7820 BCE ± 200 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Hachijojima	8020 BCE ± 2640 years	Unknown	Confirmed	Correlation: Tephrochronology
Kozushima	8050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	8050 BCE ± 500 years	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Tobu	8050 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Izu-Oshima	8450 BCE (?)	Unknown	Confirmed	Correlation: Tephrochronology
Fujisan	8540 BCE (in or after)	Unknown	Confirmed	Isotopic: 14C (uncalibrated)

Ogasawara Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Ioto	2023 Oct 18	2024 Mar 16	Confirmed	Observations: Satellite (visual)
Kita-Ioto	[2023 May 11]	[2023 May 11]	Uncertain
Nishinoshima	2022 Oct 1	2023 Oct 13	Confirmed	Observations: Reported
Kaitoku Seamount	2022 Aug 18	2023 Jan 26	Confirmed	Observations: Reported
Ioto	2022 Jul 11	2022 Dec 11	Confirmed	Observations: Reported
Kita-Ioto	2022 Mar 27	2022 Mar 27	Confirmed	Observations: Reported
Nishinoshima	2021 Aug 14	2021 Aug 15	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	2021 Aug 13	2021 Sep 12 (?)	Confirmed	Observations: Reported
Ioto	2021 Aug 12	2021 Nov 24	Confirmed	Observations: Aviation
Ioto	2020 Dec 28	2021 Apr 5 (?)	Confirmed	Observations: Reported
Nishinoshima	2019 Dec 5	2020 Aug 27	Confirmed	Observations: Reported
Ioto	[2018 Sep 8]	[2018 Sep 14]	Uncertain
Nishinoshima	2018 Jul 12	2018 Jul 21 (on or before)	Confirmed	Observations: Reported
Nishinoshima	2017 Apr 18 ± 1 days	2017 Aug 17 ± 6 days	Confirmed	Observations: Reported
Ioto	2016 Aug 31	2016 Sep 1	Confirmed	Observations: Reported
Ioto	2015 Aug 7	2015 Aug 7	Confirmed	Observations: Reported
Nishinoshima	2013 Nov 20	2015 Nov 17 (?)	Confirmed	Observations: Reported
Ioto	[2013 Aug 21]	[2013 Aug 30]	Uncertain
Ioto	2012 Dec 1	2013 Apr 11	Confirmed	Observations: Reported
Ioto	2012 Feb 10	2012 Jul 9	Confirmed	Observations: Reported
Ioto	[2010 Jun 19]	[2010 Jun 19]	Uncertain
Fukutoku-Oka-no-Ba	2010 Feb 3	2010 Apr 8 (?)	Confirmed	Observations: Reported
Kita-Ioto	[2007 Jan 22]	[2007 Oct 17]	Uncertain
Kita-Ioto	[2006 Mar 10]	[2006 Mar 10]	Uncertain
Fukutoku-Oka-no-Ba	[2005 Sep 11]	[2007 Feb 16 (on or after) ± 15 days]	Uncertain
Fukutoku-Oka-no-Ba	2005 Jul 2	2005 Jul 21 (?)	Confirmed	Observations: Reported
Ioto	[2004 Jun 6]	[2004 Jun 8]	Uncertain
Kita-Ioto	[2003 Nov 4]	[2003 Nov 4]	Uncertain
Kita-Ioto	[2003 Mar 10]	[2003 Mar 10]	Uncertain
Fukutoku-Oka-no-Ba	[2002 Dec 19]	[2003 Mar 11]	Uncertain
Kita-Ioto	[2002 Feb 28]	[2002 Feb 28]	Uncertain
Kita-Fukutokutai	[2001 Oct 30]	[2001 Oct 30]	Uncertain
Fukutoku-Oka-no-Ba	[2001 Oct 30]	[2002 Jun 19]	Uncertain
Kita-Ioto	[2001 Oct 29]	[2001 Oct 29]	Uncertain
Ioto	2001 Sep 21	2001 Oct 23	Confirmed	Observations: Reported
Kaitoku Seamount	[2001 Jul 20]	[2001 Jul 20]	Uncertain
Nishinoshima	[2001 Jan 16 ± 15 days]	[Unknown]	Uncertain
Kita-Ioto	[2000 Oct 30]	[2000 Oct 30]	Uncertain
Fukutoku-Oka-no-Ba	[2000 Jul 26]	[2001 Jun 13]	Uncertain
Kita-Ioto	[2000 Jan 25]	[2000 Jan 26]	Uncertain
Ioto	1999 Sep 10	1999 Sep 10	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	[1999 Sep 8]	[2000 Feb 18]	Uncertain
Kita-Ioto	[1999 Sep 7]	[1999 Sep 16]	Uncertain
Kita-Ioto	[1998 Oct 27]	[1998 Oct 27]	Uncertain
Fukutoku-Oka-no-Ba	[1998 Oct 16]	[1999 Jan 12]	Uncertain
Kita-Ioto	[1998 May 21]	[1998 May 21]	Uncertain
Fukutoku-Oka-no-Ba	[1997 Nov 18]	[1998 May 21]	Uncertain
Kita-Ioto	[1997 Mar 10]	[1997 Mar 10]	Uncertain
Fukutoku-Oka-no-Ba	[1995 Nov 21]	[1997 Jul 28]	Uncertain
Ioto	1994 Aug 22	1994 Aug 22	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	[1994 Jul 28]	[1994 Jul 28]	Uncertain
Ioto	[1993 Oct 27 (?)]	[1993 Nov 16 (?)]	Uncertain
Fukutoku-Oka-no-Ba	1992 Nov 10	1993 Sep 9 (?)	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	[1991 Jul 19]	[1991 Oct 18]	Uncertain
Kita-Ioto	[1989 Jul 16 ± 15 days]	[1989 Jul 16 ± 15 days]	Uncertain
Kita-Fukutokutai	[1988 Jan 27]	[Unknown]	Uncertain
Fukutoku-Oka-no-Ba	[1987 Sep 4]	[1991 Feb 6]	Uncertain
Kita-Ioto	[1987 Aug 16 ± 15 days]	[1987 Aug 16 ± 15 days]	Uncertain
Fukutoku-Oka-no-Ba	1987 Jul 14	1987 Aug 30 (?)	Confirmed	Observations: Reported
Nishinoshima	[1986 Jul 2 ± 182 days]	[1990 Jul 2 ± 182 days]	Uncertain
Kaitoku Seamount	[1986 Jun 18]	[1986 Jun 18]	Uncertain
Fukutoku-Oka-no-Ba	[1986 Apr 7]	[1987 Jun 26]	Uncertain
Fukutoku-Oka-no-Ba	1986 Jan 18	1986 Mar 28 (?)	Confirmed	Observations: Reported
Nishinoshima	[1985 Dec 2]	[1985 Dec 2]	Uncertain
Kaitoku Seamount	[1984 Dec 23]	[1984 Dec 23]	Uncertain
Kaitoku Seamount	1984 Mar 8	1984 Mar 26 (?)	Confirmed	Observations: Reported
Kita-Ioto	[1983 Jul 16 ± 15 days]	[1983 Jul 16 ± 15 days]	Uncertain
Nishinoshima	[1983 Jul 2 ± 182 days]	[1984 Jul 2 ± 182 days]	Uncertain
Ioto	1982 Nov 28	1982 Dec 16 (?) ± 15 days	Confirmed	Observations: Reported
Kita-Ioto	[1982 Jun 16 ± 15 days]	[1982 Jun 16 ± 15 days]	Uncertain
Nishinoshima	[1982 Apr 16 ± 15 days]	[1982 Apr 16 ± 15 days]	Uncertain
Ioto	1982 Mar 9	1982 Mar 10	Confirmed	Observations: Reported
Nishinoshima	[1980 Jul 7]	[1981 Jul 2 (?) ± 182 days]	Uncertain
Ioto	1980 Mar 13	1980 Mar 13	Confirmed	Observations: Reported
Ioto	1978 Dec 11	1978 Dec 11	Confirmed	Observations: Reported
Nishinoshima	[1978 Nov 16]	[1979 Jul 2 (?) ± 182 days]	Uncertain
Fukutoku-Oka-no-Ba	[1976 Aug 2]	[1985 Dec 23]	Uncertain
Ioto	1976 Jan 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Nishinoshima	[1975 Jul 2 ± 182 days]	[1977 Jul 2 ± 182 days]	Uncertain
Fukutoku-Oka-no-Ba	1974 Dec 24	1975 Nov 13 (?)	Confirmed	Observations: Reported
Ioto	[1974 Jan 16 ± 15 days]	[1974 Feb 2]	Uncertain
Fukutoku-Oka-no-Ba	1973 Dec 18	1974 Feb 16	Confirmed	Observations: Reported
Nishinoshima	1973 Apr 12	1974 May 5 ± 4 days	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	[1972 Oct 1]	[1972 Oct 1]	Uncertain
Ioto	1969 Dec 1 ± 30 days	1969 Dec 1 ± 30 days	Confirmed	Observations: Reported
Ioto	1969 Jan 12 (?)	1969 Jan 21 (?)	Confirmed	Observations: Reported
Kita-Ioto	[1968 Aug 16 ± 15 days]	[1968 Aug 16 ± 15 days]	Uncertain
Fukutoku-Oka-no-Ba	[1968 Aug 14]	[1968 Aug 20]	Uncertain
Fukutoku-Oka-no-Ba	[1968 Feb 9]	[1968 Feb 9]	Uncertain
Ioto	1967 Dec 23	1967 Dec 23	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	[1967 Jul 1]	[1967 Jul 1]	Uncertain
Fukutoku-Oka-no-Ba	[1963 Oct 27]	[Unknown]	Uncertain
Fukutoku-Oka-no-Ba	[1962 Jul 1]	[1962 Oct 1]	Uncertain
Fukutoku-Oka-no-Ba	[1960 Jul 1]	[1960 Sep 1]	Uncertain
Kita-Fukutokutai	[1959 Jul 2 ± 182 days]	[Unknown]	Uncertain
Fukutoku-Oka-no-Ba	[1959 Jul 1]	[1959 Oct 1]	Uncertain
Fukutoku-Oka-no-Ba	[1958 Jul 1]	[1958 Oct 1]	Uncertain
Ioto	1957 Mar 28	1957 Mar 28	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	[1956 Apr 1]	[1956 May 1]	Uncertain
Fukutoku-Oka-no-Ba	[1955 Apr 1]	[1955 Apr 1]	Uncertain
Fukutoku-Oka-no-Ba	[1954 Feb 4 ± 4 days]	[Unknown]	Uncertain
Fukutoku-Oka-no-Ba	[1953 Dec 1]	[1953 Dec 1]	Uncertain
Kita-Fukutokutai	1953 Jul 2 ± 182 days	1954 Jul 2 ± 182 days	Confirmed	Observations: Reported
Kita-Ioto	[1953 May 16 ± 15 days]	[1953 May 16 ± 15 days]	Uncertain
Fukutoku-Oka-no-Ba	[1952 Jun 20]	[1952 Jun 20]	Uncertain
Fukutoku-Oka-no-Ba	[1950 Feb 1]	[1950 Feb 1]	Uncertain
Kita-Fukutokutai	[1947]	[Unknown]	Uncertain
Ioto	1944 Dec	Unknown	Confirmed	Observations: Reported
Kita-Fukutokutai	[1937]	[Unknown]	Uncertain
Ioto	1935	Unknown	Confirmed	Observations: Reported
Ioto	1930 (?)	Unknown	Confirmed	Observations: Reported
Kita-Ioto	1930	1945	Confirmed	Observations: Reported
Ioto	1922 Jul	Unknown	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	1914 Jan 13	1914 Aug 21 (on or after)	Confirmed	Observations: Reported
Fukutoku-Oka-no-Ba	1904 Nov 14	1905 May 16 (?)	Confirmed	Observations: Reported
Ioto	1889 Dec 31 ± 365 days	Unknown	Confirmed	Observations: Reported
Kita-Ioto	1880	1889	Confirmed	Observations: Reported
Kita-Ioto	1780	Unknown	Confirmed	Observations: Reported
Kaitoku Seamount	[1543]	[Unknown]	Uncertain
Ioto	0850 BCE ± 50 years	Unknown	Confirmed	Isotopic: 14C (calibrated)

Mariana Volcanic Arc

Volcano Name	Start Date	Stop Date	Certainty	Evidence
Ahyi	2024 Aug 5	2025 May 2 (continuing)	Confirmed	Observations: Reported
Ahyi	2024 Jan 1	2024 Mar 27	Confirmed	Observations: Satellite (visual)
Ruby	2023 Sep 14	2023 Sep 15	Confirmed	Observations: Reported
Ahyi	2022 Nov 18 ± 1 days	2023 Jun 11	Confirmed	Observations: Reported
Pagan	2021 Jul 29	2021 Sep 6	Confirmed	Observations: Reported
Ahyi	2014 Apr 24	2014 May 17	Confirmed	Observations: Hydrophonic
Mariana Back-Arc Segment at 15.5°N	2013 Feb 13 (on or after)	2015 Dec 1 (on or before)	Confirmed	Observations: Reported
Pagan	2012 Jul 10	2012 Jul 10	Confirmed	Observations: Reported
Pagan	2011 Apr 23 (?)	2011 Sep 1 (?)	Confirmed	Observations: Reported
South Sarigan Seamount	2010 May 27	2010 May 29	Confirmed	Observations: Reported
Pagan	2010 May 3	2010 Aug 11	Confirmed	Observations: Reported
Pagan	[2009 Apr 15]	[Unknown]	Uncertain
Anatahan	2007 Nov 27 ± 3 days	2008 Aug 9 (?)	Confirmed	Observations: Reported
Pagan	2006 Dec 4	2006 Dec 8	Confirmed	Observations: Reported
Anatahan	2006 Mar 20 (?)	2006 Jun 26 (?)	Confirmed	Observations: Reported
Anatahan	2004 Apr 12 (on or before)	2005 Sep 3 (?)	Confirmed	Observations: Reported
NW Rota-1	2003 Jul 2 (?) ± 182 days	2010 Mar 16 (on or after) ± 15 days	Confirmed	Observations: Reported
Anatahan	2003 May 10	2003 Jul 12 ± 3 days	Confirmed	Observations: Reported
Ahyi	2001 Apr 24	2001 Apr 25	Confirmed	Observations: Hydrophonic
Pagan	1996 Jul 2 ± 182 days	Unknown	Confirmed	Observations: Reported
Minami-Hiyoshi	[1996 Jan 11]	[1996 Jan 12]	Uncertain
Ruby	1995 Oct 11 (?)	1995 Oct 25	Confirmed	Observations: Reported
Ahyi	1994 Apr 23	Unknown	Confirmed	Observations: Reported
Pagan	1993 Jan 15 ± 5 days	1993 Nov 16 (on or after) ± 15 days	Confirmed	Observations: Reported
Pagan	1992 Apr 13	1992 Apr 13	Confirmed	Observations: Reported
Minami-Hiyoshi	[1992 Feb 12]	[1992 Mar 4]	Uncertain
Ahyi	1989 Sep 21	1989 Dec 27	Confirmed	Observations: Hydrophonic
Pagan	1988 Aug 24	1988 Oct 12	Confirmed	Observations: Reported
Pagan	[1988 Feb 16]	[Unknown]	Uncertain
Pagan	1987 Sep 4	1987 Sep 4	Confirmed	Observations: Reported
Esmeralda Bank	[1987 May 26]	[Unknown]	Uncertain
Ahyi	1985 Aug 2	1985 Sep 5	Confirmed	Observations: Hydrophonic
Fukujin	[1982 Dec 15]	[Unknown]	Uncertain
Esmeralda Bank	[1982 Apr 6]	[Unknown]	Uncertain
Fukujin	[1982 Jan 12]	[1982 Mar 16]	Uncertain
Pagan	1981 May 15	1985 May 1 (on or after)	Confirmed	Observations: Reported
Fukujin	[1981 Jan 7]	[1981 Jan 8]	Uncertain
Ahyi	[1979 Nov 15]	[1979 Nov 15]	Uncertain
Nikko	[1979 Jul 12]	[Unknown]	Uncertain
Fukujin	[1979 Apr 26]	[1980 May 12]	Uncertain
Fukujin	[1978 Aug 24]	[1978 Aug 25]	Uncertain
Minami-Hiyoshi	[1978 Jan 26 (?)]	[1978 Mar 24]	Uncertain
Fukujin	[1977 Oct 14]	[1978 Mar 24]	Uncertain
Minami-Hiyoshi	[1976 Dec 20]	[1977 Mar 28]	Uncertain
Fukujin	[1976 Aug 2]	[1977 Apr 21]	Uncertain
Minami-Hiyoshi	[1976 Feb 16 ± 15 days]	[Unknown]	Uncertain
Kasuga 1	[1975 Nov 16 ± 15 days]	[Unknown]	Uncertain
Minami-Hiyoshi	1975 Aug 25	Unknown	Confirmed	Observations: Reported
Esmeralda Bank	[1975 Apr 26]	[1975 Apr 29]	Uncertain
Fukujin	1973 Sep 27	1974 Mar 5	Confirmed	Observations: Reported
Esmeralda Bank	[1970 Jul 2 ± 1 years ± 182 days]	[Unknown]	Uncertain
Ahyi	1969 Mar 11	1969 Mar 13	Confirmed	Observations: Hydrophonic
Fukujin	1968 Sep 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Ahyi	1967 Mar 27	1967 Apr 10	Confirmed	Observations: Hydrophonic
Ruby	1966 Apr 21 ± 7 days	1966 May 16 ± 15 days	Confirmed	Observations: Hydrophonic
Esmeralda Bank	[1964 Apr 14]	[Unknown]	Uncertain
Fukujin	[1959 Aug 16 ± 15 days]	[1959 Oct 16 ± 15 days]	Uncertain
Kasuga 1	1959 Jul 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Fukujin	[1958 Aug 16 ± 15 days]	[1958 Sep 16 ± 15 days]	Uncertain
Farallon de Pajaros	1952 Oct 26 ± 5 days	1953 Apr 15	Confirmed	Observations: Reported
Fukujin	[1952 Jul 2 ± 182 days]	[Unknown]	Uncertain
Farallon de Pajaros	1951 Aug 16 ± 15 days	Unknown	Confirmed	Observations: Reported
Fukujin	1951 Jul 15 ± 45 days	1951 Oct 15 ± 45 days	Confirmed	Observations: Reported
Farallon de Pajaros	[1947 Jan (?)]	[Unknown]	Uncertain
Esmeralda Bank	[1944 Aug 20 ± 10 days]	[Unknown]	Uncertain
Farallon de Pajaros	1943	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1941 Mar 28	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1939	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1936 Apr 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Ahyi	1934 Jul 15 ± 45 days	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	[1934]	[Unknown]	Uncertain
Farallon de Pajaros	1932 Sep 7	1932 Oct 7	Confirmed	Observations: Reported
Pagan	[1929]	[1930]	Uncertain
Farallon de Pajaros	1928 Dec 15 ± 5 days	Unknown	Confirmed	Observations: Reported
Pagan	1925 Feb	1925 May 5	Confirmed	Observations: Reported
Farallon de Pajaros	1925	Unknown	Confirmed	Observations: Reported
Asuncion	[1924]	[Unknown]	Uncertain
Pagan	1923 Feb (?)	1923 Mar 26 ± 5 days	Confirmed	Observations: Reported
Agrigan	1917 Apr 9	Unknown	Confirmed	Observations: Reported
Pagan	1917	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1912	Unknown	Confirmed	Observations: Reported
Pagan	1909	Unknown	Confirmed	Observations: Reported
Asuncion	1906	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1901 Jan (?)	1902 Dec	Confirmed	Uncertain
Alamagan	[1887 Nov 29]	[Unknown]	Uncertain
Guguan	1883 ± 1 years	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1876 Jan 1 (?)	1876 Jan 3 (?)	Confirmed	Observations: Reported
Pagan	1873 (?)	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1872 Jul 11	Unknown	Confirmed	Observations: Reported
Farallon de Pajaros	1864 Jan 7	Unknown	Confirmed	Observations: Reported
Alamagan	[1864 Jan]	[Unknown]	Uncertain
Pagan	1864	Unknown	Confirmed	Observations: Reported
Pagan	1825 ± 5 years	Unknown	Confirmed	Observations: Reported
Pagan	1800 ± 50 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Asuncion	[1775 ± 10 years]	[Unknown]	Uncertain
Asuncion	[1690 ± 10 years]	[Unknown]	Uncertain
Pagan	1669	Unknown	Confirmed	Observations: Reported
Pagan	1340 ± 100 years	Unknown	Confirmed	Isotopic: 14C (calibrated)
Alamagan	0870 ± 100 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)
Alamagan	0540 ± 75 years	Unknown	Confirmed	Isotopic: 14C (uncalibrated)

There are 261 Pleistocene volcanoes in the Northwest Pacific Volcanic Regions.

Central Kamchatka Volcanic Arc

Volcano Name	Country	Volcanic Landform
Kulkev	Russia	Shield
Geodesistov	Russia	Shield
Anaun	Russia	Composite
Krainy	Russia	Shield
Kekurny	Russia	Shield
Eggella	Russia	Shield
Verkhovoy	Russia	Shield
Cherny	Russia	Composite
Pogranychny	Russia	Shield
Zaozerny	Russia	Shield
Bliznets	Russia	Composite
Buduli	Russia	Shield
Kopkan	Russia	Shield
Yanpat	Russia	Shield
Chavycha	Russia	Shield
Malaya Ketepana	Russia	Shield
Bolshoy Ketepana	Russia	Shield
Unnamed	Russia	Shield
Ovalny	Russia	Shield
Tigilsky	Russia	Shield
Perevalovyi	Russia	Shield
Maly Alney	Russia	Composite
Maly Chekchebonay	Russia	Shield
Bolshoy Chekchebonay	Russia	Shield
Kireunsky	Russia	Shield
Dvukhyurtochny	Russia	Shield
Unnamed	Russia	Minor
Kalgauch	Russia	Composite
Lyzyk	Russia	Minor
Uchkoren	Russia	Composite
Kebeney	Russia	Shield
Fedotych	Russia	Shield
Leutongey	Russia	Shield
Tuzovsky	Russia	Shield
Mezhdusopochny	Russia	Shield
Shishel	Russia	Shield
Alngey	Russia	Composite
Uka	Russia	Shield
Kaileney	Russia	Shield
Plosky	Russia	Shield
Bely	Russia	Shield
Snezhniy	Russia	Shield
Iktunup	Russia	Shield
Snegovoy	Russia	Shield
Iettunup	Russia	Shield
Voyampolsky	Russia	Shield
Kunkhilok	Russia	Composite
Shlen	Russia	Shield
Pirozhnikova	Russia	Composite
Kamenisty	Russia	Composite
Tekletunup	Russia	Shield
Ulvaney	Russia	Shield
Mutny	Russia	Shield
Khuvkhoitun	Russia	Composite
Keveney	Russia	Shield
Langtutkin	Russia	Shield
Maly Payalpan	Russia	Shield
Bolshoi Payalpan	Russia	Shield
Plosky	Russia	Shield
Akhtang	Russia	Shield
Kozyrevsky	Russia	Shield
Romanovka	Russia	Composite
Uksichan	Russia	Shield
Tynua	Russia	Shield
Etopan	Russia	Shield
Kimitina	Russia	Composite
Unnamed	Russia	Shield
Ochchamo	Russia	Shield
Bolshoy Kozyrevsky	Russia	Shield
Bolshaya Romanovka	Russia	Shield
Unnamed	Russia	Composite
Bongabti	Russia	Shield
Nosichan	Russia	Shield

Eastern Kamchatka Volcanic Arc

Volcano Name	Country	Volcanic Landform
Schmidt	Russia	Shield
Zhupanovskiye Vostriyaky	Russia	Composite
Ditmara	Russia	Composite
Krainy	Russia	Composite
Razlaty	Russia	Composite
Unnamed	Russia	Composite
Unana	Russia	Composite
Adamozhets	Russia	Minor
Bogachensky	Russia	Shield
Piip	Russia	Shield
Konechnaya	Russia	Shield
Konradi	Russia	Composite
Sokol	Russia	Composite
Tumrok	Russia	Shield
Iult	Russia	Composite
Zarechny	Russia	Caldera
Kharchinsky	Russia	Composite
Unnamed	Russia	Cluster
Aak	Russia	Composite
Kupol	Russia	Composite
Kitkhoysky	Russia	Shield
Vershinsky	Russia	Composite
Skalistiy	Russia	Unknown
Lauchachan	Russia	Shield
Prodolny	Russia	Shield
Kobalan	Russia	Composite

Kuril Volcanic Arc

Volcano Name	Country	Volcanic Landform
Shikaribetsu Group	Japan	Cluster
Tomuraushi Volcanic Group	Japan	Composite
Chubetsu	Japan	Composite
Niseikaushuppe	Japan	Composite
Tengu-Hirayama	Japan	Composite
Shiitokoro	Japan	Minor
Kumaneshiri	Japan	Composite
Tokachi-Mitsumata	Japan	Caldera
Tokachi-Eboshi	Japan	Minor
Ikanmikot	Russia	Composite
Kuntomintar	Russia	Composite
Shestakov	Russia	Composite
Avos' Rocks	Russia	Unknown
Makanru Island	Russia	Composite
Birao	Japan	Composite
Samakkenupuri	Japan	Composite
Musa	Japan	Composite
Shari	Japan	Composite
Unabetsu	Japan	Composite
Onnebetsu	Japan	Composite
Shiretoko	Japan	Composite
Mashkovtsev	Russia	Composite
Kell	Russia	Composite
Belenkaya	Russia	Composite
Ozernoy	Russia	Shield
Piratkovsky	Russia	Composite
Ostanets	Russia	Shield
Otdelniy	Russia	Shield
Golaya	Russia	Composite
Karymshina	Russia	Caldera
Vysokii	Russia	Composite
Tumanniy	Russia	Shield
Ded i Baba	Russia	Shield
Tretya Rechka	Russia	Shield
Koshegochek	Russia	Shield
Sredniy Koshegochek	Russia	Shield
Unnamed	Russia	Shield
Leviy Koshegochek	Russia	Shield
Kuzheten	Russia	Shield
Vostochnaya Khodutka	Russia	Shield
Zheltiy	Russia	Composite
Kuzanek	Russia	Shield
Unnamed	Russia	Shield
Igolki	Russia	Shield
Skalistiy	Russia	Shield
Perevalny	Russia	Shield
Krugliy	Russia	Shield
Savan	Russia	Shield
Malaya Ipelka	Russia	Composite
Kamen	Russia	Composite
Ploskiy	Russia	Composite
Udochka	Russia	Shield
Bolshaya Ipelka	Russia	Shield
Tolmachev	Russia	Composite
Rucharu [Golets-Tornyi Group]	Japan - administered by Russia	Minor
Urbich Caldera	Japan - administered by Russia	Caldera
Tsirk	Japan - administered by Russia	Caldera
Petr Shmidt Ridge	Russia	Unknown
Antipin	Russia	Composite
Gora Desantnaya	Russia	Composite
Brontona Island	Russia	Unknown

Northeast Japan Volcanic Arc

Volcano Name	Country	Volcanic Landform
Kurofuji	Japan	Composite
Yatsugatake	Japan	Composite
Kirigamine	Japan	Shield
Utsukushigahara	Japan	Shield
Kamitakara	Japan	Unknown
Shirouma-Oike	Japan	Composite
Madarao	Japan	Composite
Kurohime	Japan	Composite
Iizuna	Japan	Composite
Motodori	Japan	Minor
Minakami	Japan	Minor
Eboshi	Japan	Composite
Hanamagari	Japan	Composite
Azumayasan	Japan	Composite
Omeshidake	Japan	Composite
Takayashiro	Japan	Composite
Sekita	Japan	Composite
Kenashi	Japan	Composite
Torikabuto	Japan	Composite
Naeba	Japan	Composite
Iiji	Japan	Composite
Masugata	Japan	Minor
Komochi-Onoko	Japan	Composite
Sukai-Kesemaru	Japan	Composite
Numanokami	Japan	Composite
Hotaka	Japan	Composite
Ayame-daira	Japan	Composite
Kinunuma-Nenakusa	Japan	Minor
Nyoho-Akanagi	Japan	Composite
Futamata	Japan	Composite
Aizu Nunobiki	Japan	Composite
Asakusa	Japan	Composite
Sumon	Japan	Composite
Sunagohara	Japan	Caldera
Nekoma	Japan	Composite
Dorobu	Japan	Caldera
Aoso	Japan	Composite
Shirataka	Japan	Composite
Ganto-Kamuro	Japan	Composite
Adachi	Japan	Minor
Daito	Japan	Composite
Funagata	Japan	Composite
Gassan	Japan	Composite
Mukaimachi	Japan	Caldera
Onikobe	Japan	Caldera
Takamatsu	Japan	Composite
Kobinai	Japan	Composite
Yakeishi	Japan	Composite
Tazawa	Japan	Caldera
Kayo	Japan	Composite
Nyuto-Takakura	Japan	Composite
Tamagawa	Japan	Caldera
Moriyoshi	Japan	Composite
Kanpu	Japan	Composite
Nanashigure	Japan	Minor
Tashiro	Japan	Composite
Okiura	Japan	Caldera
Mutsu-Hiuchidake	Japan	Composite
Daira-Komagatake	Japan	Composite
Oshima Maruyama	Japan	Composite
Hakodateyama	Japan	Composite
Zenikame	Japan	Caldera
Esan Maruyama	Japan	Composite
Yokotsu	Japan	Composite
Nigorikawa	Japan	Caldera
Okushiri-Katsumayama	Japan	Shield
Kariba	Japan	Composite
Washibetsu	Japan	Composite
Raiden	Japan	Composite
Akaigawa	Japan	Composite
Shiribetsu	Japan	Composite
Orofure-Raiba	Japan	Composite
Horohoro-Tokushumbetsu	Japan	Composite
Soranuma	Japan	Shield
Sapporo	Japan	Shield
Oshima-Kojima	Japan	Composite

Izu Volcanic Arc

Volcano Name	Country	Volcanic Landform
Mikura Seamount	Japan	Composite
Udonejima	Japan	Composite
Onoharajima	Japan	Minor
Inambajima	Japan	Minor
Nanzaki	Japan	Minor
Jaishi	Japan	Shield
Tanaba	Japan	Composite
Daruma	Japan	Composite
Tenshi	Japan	Composite
Usami	Japan	Composite
Taga	Japan	Composite
Yugawara	Japan	Composite
Ashitaka	Japan	Composite

Ogasawara Volcanic Arc

Volcano Name	Country	Volcanic Landform
Nichiyo Seamount	Japan	Composite
Getsuyo Seamount	Japan	Composite
Kayo Seamount	Japan	Composite
Kinyo Seamount	Japan	Composite

Mariana Volcanic Arc

Volcano Name	Country	Volcanic Landform
Cheref	United States	Composite
Poyo	United States	Composite
Syoyo Ridge	Japan	Composite
Kasuga 3	United States	Composite
Eifuku	United States	Composite
South Daikoku	United States	Composite
Chamorro	United States	Unknown
Tracey Seamount	United States	Composite