Global Volcanism Program

Yakedake

Google Earth Placemark with Features

Cite Volcano Profile

Japan
Nankai Volcanic Arc
Composite | Stratovolcano(es)
1995 CE

Country
Volcanic Region
Landform | Volc Type
Last Known Eruption

36.227°N
137.587°E
2,455 m
8,054 ft
283070

Latitude
Longitude
Summit
Elevation
Volcano
Number

Most Recent Weekly Report: 16 April-22 April 2025 Cite this Report

The Japan Meteorological Agency (JMA) lowered the Alert Level for Yakedake to 1 (on a scale of 1-5) at 1100 on 18 April, noting that seismicity has remind at low levels after a period of elevated seismicity was recorded during 3-9 March. JMA warned climbers to be alert to any changes at the volcano and to wear a helmet.

Source: Japan Meteorological Agency (JMA)

Most Recent Bulletin Report: February 1995 (BGVN 20:02) Cite this Report

Hydrothermal explosion kills four people

A hydrothermal explosion around 1430 on 11 February killed four people at a highway construction site, located in a geothermal area along the narrow Azusa-gawa River ~2 km SE of the summit. The Geological Survey of Japan reported that there were at least two explosions from the vent (12 m long and 6 m wide). The first, a large explosion, created a 1,500-m-high plume composed of mud and gas, and caused collapse of the river bank, burying the primary vent. A second explosion scattered mud and gas within 200 m of the vent. JMA staff who surveyed the site on 12 February and 13 March noted that fume rising to a height of 20 m was almost at the boiling point. No explosions have been reported since 12 February.

Information Contacts: JMA.

Weekly Reports - Index

2025: February | April
2022: May | July

16 April-22 April 2025 Cite this Report

Source: Japan Meteorological Agency (JMA)

26 February-4 March 2025 Cite this Report

The Japan Meteorological Agency (JMA) raised the Alert Level for Yakedake to 2 (on a scale of 1-5) at 0920 on 4 March, noting that the number of small volcanic earthquakes with epicenters near the summit began increasing around 1400 the day before. Additionally, inflation near the summit was detected in Global Navigation Satellite Systems (GNSS) data. JMA warned the public to be cautious within 1 km of the cater.

Source: Japan Meteorological Agency (JMA)

6 July-12 July 2022 Cite this Report

JMA reported that after an increase in the number of small volcanic earthquakes with epicenters near Yakedake’s summit in late May, seismicity remained elevated for a few weeks. Seismicity decreased in mid-June and returned to baseline levels. The Alert Level was lowered to 1 (on a scale of 1-5) on 12 July.

Source: Japan Meteorological Agency (JMA)

25 May-31 May 2022 Cite this Report

JMA raised the Alert Level for Yakedake to 2 (on a scale of 1-5) on 24 May, noting that the number of small volcanic earthquakes with epicenters near the summit began increasing around 2300 the day before. The report also noted that minor inflation near the summit was continuing. Daily small volcanic earthquakes continued to be counted through 31 May.

Source: Japan Meteorological Agency (JMA)

Bulletin Reports - Index

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

02/1995 (BGVN 20:02) Hydrothermal explosion kills four people

Information is preliminary and subject to change. All times are local (unless otherwise noted)

February 1995 (BGVN 20:02) Cite this Report

Hydrothermal explosion kills four people

Information Contacts: JMA.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude

283070

1995 CE

2,455 m / 8,054 ft

36.227°N
137.587°E

Morphology

Volcano Landform
Composite

Volcano Types
Stratovolcano(es)
Lava dome(s)

Rock Types

Major
Andesite / Basaltic Andesite
Dacite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km

995
2,995
156,542
4,595,286

Geological Summary

Yakedake rises above the popular resort of Kamikochi in the Northern Japan Alps. The small dominantly andesitic stratovolcano, one of several Japanese volcanoes named Yakedake or Yakeyama ("Burning Peak" or "Burning Mountain"), was constructed astride a N-S-trending ridge between the older volcanoes of Warudaniyama and Shirataniyama. Akandanayama, about 4 km SSW, is a stratovolcano with lava domes that was active into the Holocene. A 300-m-wide crater is located at the summit, and explosion craters are found on the SE and N flanks. Frequent small-to-moderate phreatic eruptions have occurred during the 20th century. On 11 February 1995 a hydrothermal explosion in a geothermal area killed two people at a highway construction site.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior.

Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).

Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.

Kuno H, 1962. Japan, Taiwan and Marianas. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 11: 1-332.

Miyake Y, Ossaka J, 1998. Steam explosion of Feburary 11th, 1995 at Nakanoyu Hot Spring, Nagano Prefecture, central Japan. Bull Volc Soc Japan (Kazan), 43: 113-121 (in Japanese with English abs).

Murai I, 1962. A brief note on the eruption of the Yake-dake volcano of June 17, 1962. Bull Earthq Res Inst, Univ Tokyo, 40: 805-814.

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST, http://www.aist.go.jp/RIODB/strata/VOL_JP/.

Eruptive History

There is data available for 38 confirmed Holocene eruptive periods.

1995 Feb 11 - 1995 Feb 11 Confirmed Eruption (Explosive / Effusive) VEI: 1

Episode 1 | Eruption (Explosive / Effusive)

SE flank (Azusa-gawa)

1995 Feb 11 - 1995 Feb 11

Evidence from Observations: Reported

List of 6 Events for Episode 1 at SE flank (Azusa-gawa)

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Avalanche	weak or small
- - - -	- - - -	Blocks
- - - -	- - - -	Property Damage
1995 Feb 11	- - - -	Fatalities
1995 Feb 11	- - - -	VEI (Explosivity Index)

1962 Jun 17 - 1963 Jun 29 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

North flank (Kurodani and Nakao-toge)

1962 Jun 17 - 1963 Jun 29

Evidence from Observations: Reported

List of 7 Events for Episode 1 at North flank (Kurodani and Nakao-toge)

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Blocks
- - - -	- - - -	Earthquakes (undefined)	Before.
- - - -	- - - -	Lahar or Mudflow
- - - -	- - - -	Property Damage
1962 Jun 17	- - - -	VEI (Explosivity Index)

1939 Jun 4 - 1939 Jun 4 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

1939 Jun 4 - 1939 Jun 4

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1939 Jun 4	- - - -	VEI (Explosivity Index)

1935 Sep 11 - 1935 Nov 12 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

1935 Sep 11 - 1935 Nov 12

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1935 Sep 11	- - - -	VEI (Explosivity Index)

1932 Feb 6 - 1932 Feb 6 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

1932 Feb 6 - 1932 Feb 6

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1932 Feb 6	- - - -	VEI (Explosivity Index)

1931 Mar 26 - 1931 Jun 24 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

1931 Mar 26 - 1931 Jun 24

Evidence from Observations: Reported

List of 4 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Property Damage
1931 Mar 26	- - - -	VEI (Explosivity Index)

1930 Mar 13 - 1930 May 11 (?) Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Inkyo-ko

1930 Mar 13 - 1930 May 11 (?)

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Inkyo-ko

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Earthquakes (undefined)	Before.
1930 Mar 13	- - - -	VEI (Explosivity Index)

1929 Apr 17 - 1929 Apr 19 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Summit (Inkyo-ko), NW flank (Kurodani)

1929 Apr 17 - 1929 Apr 19

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Summit (Inkyo-ko), NW flank (Kurodani)

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1929 Apr 17	- - - -	VEI (Explosivity Index)

1927 Dec 15 - 1927 Dec 15 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Summit (Inkyo-ko), NW flank (Kurodani)

1927 Dec 15 - 1927 Dec 15

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Summit (Inkyo-ko), NW flank (Kurodani)

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1927 Dec 15	- - - -	VEI (Explosivity Index)

1927 Jan 23 - 1927 Apr 29 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Summit (Inkyo-ko), NW flank (Kurodani)

1927 Jan 23 - 1927 Apr 29

Evidence from Observations: Reported

List of 4 Events for Episode 1 at Summit (Inkyo-ko), NW flank (Kurodani)

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Earthquakes (undefined)	Before.
1927 Jan 23	- - - -	VEI (Explosivity Index)

1924 Nov 16 - 1926 Jan 27 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Summit (Inkyo-ko), NW flank (Kurodani)

1924 Nov 16 - 1926 Jan 27

Evidence from Observations: Reported

List of 8 Events for Episode 1 at Summit (Inkyo-ko), NW flank (Kurodani)

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Eruption cloud
- - - -	- - - -	Ash
- - - -	- - - -	Blocks
- - - -	- - - -	Lightning
- - - -	- - - -	Crater	Summit.
- - - -	- - - -	Crater	Parasitic.
1924 Nov 16	- - - -	VEI (Explosivity Index)

1923 Jun 26 - 1923 Aug 2 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

NW flank (Kurodani Crater), Inkyo-ko

1923 Jun 26 - 1923 Aug 2

Evidence from Observations: Reported

List of 3 Events for Episode 1 at NW flank (Kurodani Crater), Inkyo-ko

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1923 Jun 26	- - - -	VEI (Explosivity Index)

1922 Mar 10 - 1922 Mar 19 Confirmed Eruption (Explosive / Effusive) VEI: 1 (?)

Episode 1 | Eruption (Explosive / Effusive)

NW flank (Kurodani Crater), Inkyo-ko

1922 Mar 10 - 1922 Mar 19

Evidence from Observations: Reported

List of 3 Events for Episode 1 at NW flank (Kurodani Crater), Inkyo-ko

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1922 Mar 10	- - - -	VEI (Explosivity Index)

1921 Confirmed Eruption (Explosive / Effusive)

Episode 1 | Eruption (Explosive / Effusive)

1921 - Unknown

Evidence from Observations: Reported

List of 1 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity

1920 Confirmed Eruption (Explosive / Effusive)

Episode 1 | Eruption (Explosive / Effusive)

1920 - Unknown

Evidence from Observations: Reported

List of 1 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity

1919 Nov 1 - 1919 Nov 1 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

NW flank (Kurodani Crater)

1919 Nov 1 - 1919 Nov 1

Evidence from Observations: Reported

List of 2 Events for Episode 1 at NW flank (Kurodani Crater)

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity
	1919 Nov 1	- - - -	VEI (Explosivity Index)

1918 Confirmed Eruption (Explosive / Effusive) VEI: 1

Episode 1 | Eruption (Explosive / Effusive)

Taisho crater

1918 - Unknown

Evidence from Observations: Reported

List of 2 Events for Episode 1 at Taisho crater

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity
	1918	- - - -	VEI (Explosivity Index)

1917 Confirmed Eruption (Explosive / Effusive) VEI: 1

Episode 1 | Eruption (Explosive / Effusive)

Taisho Crater

1917 - Unknown

Evidence from Observations: Reported

List of 2 Events for Episode 1 at Taisho Crater

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity
	1917	- - - -	VEI (Explosivity Index)

1916 Mar 17 - 1916 Apr 12 (?) Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Taisho Crater, Inkyo-ko

1916 Mar 17 - 1916 Apr 12 (?)

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Taisho Crater, Inkyo-ko

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1916 Mar 17	- - - -	VEI (Explosivity Index)

1915 Jun 6 - 1915 Jul 16 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

1911 summit crater, SE flank (Taisho)

1915 Jun 6 - 1915 Jul 16

Evidence from Observations: Reported

List of 7 Events for Episode 1 at 1911 summit crater, SE flank (Taisho)

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Blocks
- - - -	- - - -	Earthquakes (undefined)	Before.
- - - -	- - - -	Lahar or Mudflow
- - - -	- - - -	Property Damage
1915 Jun 6	- - - -	VEI (Explosivity Index)

1915 Feb - 1915 Feb Confirmed Eruption (Explosive / Effusive) VEI: 2 (?)

Episode 1 | Eruption (Explosive / Effusive)

1915 Feb - 1915 Feb

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Ash
1915 Feb	- - - -	VEI (Explosivity Index)

1913 Sep 1 (?) - 1914 Jan 13 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Inkyo-ko

1913 Sep 1 (?) - 1914 Jan 13

Evidence from Observations: Reported

List of 4 Events for Episode 1 at Inkyo-ko

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Audible Sounds
1913 Sep 1 (?)	- - - -	VEI (Explosivity Index)

1912 Feb 11 - 1912 Sep (?) Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

1912 Feb 11 - 1912 Sep (?)

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1912 Feb 11	- - - -	VEI (Explosivity Index)

1911 May 6 - 1911 Aug 23 (?) Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

New summit crater (Inkyo-ko)

1911 May 6 - 1911 Aug 23 (?)

Evidence from Observations: Reported

List of 5 Events for Episode 1 at New summit crater (Inkyo-ko)

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Flames
1911 May 6	- - - -	VEI (Explosivity Index)

1910 Nov 11 - 1910 Nov 30 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Summit crater (Shoga-ike)

1910 Nov 11 - 1910 Nov 30

Evidence from Observations: Reported

List of 4 Events for Episode 1 at Summit crater (Shoga-ike)

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
- - - -	- - - -	Audible Sounds
1910 Nov 11	- - - -	VEI (Explosivity Index)

1907 Dec 8 - 1909 Jun 1 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Summit crater (Shoga-ike)

1907 Dec 8 - 1909 Jun 1

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Summit crater (Shoga-ike)

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1907 Dec 8	- - - -	VEI (Explosivity Index)

1746 Apr 18 - 1746 Apr 19 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu7 tephra

1746 Apr 18 - 1746 Apr 19

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Ykd-Tu7 tephra

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1746 Apr 18	- - - -	VEI (Explosivity Index)

1585 Dec (?) Confirmed Eruption (Explosive / Effusive) VEI: 3

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu6 tephra

1585 Dec (?) - Unknown

Evidence from Observations: Reported

List of 5 Events for Episode 1 at Ykd-Tu6 tephra

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Earthquakes (undefined)	Uncertain
- - - -	- - - -	Lahar or Mudflow
- - - -	- - - -	Property Damage
1585 Dec (?)	- - - -	VEI (Explosivity Index)

1460 (?) Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu5 tephra

1460 (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 3 Events for Episode 1 at Ykd-Tu5 tephra

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
1460 (?)	- - - -	VEI (Explosivity Index)

1440 (?) Confirmed Eruption (Explosive / Effusive)

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu4 tephra

1440 (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Ykd-Tu4 tephra

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity
	- - - -	- - - -	Ash

1270 (?) Confirmed Eruption (Explosive / Effusive)

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu3 tephra

1270 (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Ykd-Tu3 tephra

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity
	- - - -	- - - -	Ash

0686 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu2 tephra

0686 - Unknown

Evidence from Observations: Reported

List of 3 Events for Episode 1 at Ykd-Tu2 tephra

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
0686	- - - -	VEI (Explosivity Index)

0630 (?) Confirmed Eruption (Explosive / Effusive) VEI: 1

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tu1 tephra

0630 (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 3 Events for Episode 1 at Ykd-Tu1 tephra

Start Date	End Date	Event Type
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Ash
0630 (?)	- - - -	VEI (Explosivity Index)

0350 BCE (?) Confirmed Eruption (Explosive / Effusive) VEI: 4

Episode 1 | Eruption (Explosive / Effusive)

0350 BCE (?) - Unknown

Evidence from Isotopic: 14C (calibrated)

List of 5 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Phreatic activity
- - - -	- - - -	Pyroclastic flow
- - - -	- - - -	Lava flow
0350 BCE (?)	- - - -	VEI (Explosivity Index)

0400 BCE (?) Confirmed Eruption (Explosive / Effusive)

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tl2 tephra

0400 BCE (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Ykd-Tl2 tephra

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Phreatic activity
	- - - -	- - - -	Ash

0850 BCE (?) Confirmed Eruption (Explosive / Effusive)

Episode 1 | Eruption (Explosive / Effusive)

Ykd-Tl1 tephra

0850 BCE (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Ykd-Tl1 tephra

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion
	- - - -	- - - -	Phreatic activity

2550 BCE (?) Confirmed Eruption (Explosive / Effusive) VEI: 0

Episode 1 | Eruption (Explosive / Effusive)

2550 BCE (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Lava flow
	2550 BCE (?)	- - - -	VEI (Explosivity Index)

7450 BCE (?) Confirmed Eruption (Explosive / Effusive) VEI: 0

Episode 1 | Eruption (Explosive / Effusive)

Akandana-yama

7450 BCE (?) - Unknown

Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Akandana-yama

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Lava flow
	7450 BCE (?)	- - - -	VEI (Explosivity Index)

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Synonyms

Iwo-dake | Yake-dake

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Shiratani-yama
Siratani-yama

Stratovolcano

2140 m

Warudani-yama

Stratovolcano

2224 m

Craters

Feature Name

Feature Type

Elevation

Latitude

Longitude

Junga-ike

Crater

Kamibori

Crater

Kurodani

Crater

Nakao-toge

Crater

Shimobori

Crater

Shiramizu

Crater

Taisho

Crater

Photo Gallery

Yakedake rises above Kamikochi resort in the Northern Japan Alps, seen here from Taishoike pond to its ENE. It contains a 300-m-wide crater at the summit and craters are found on the SE and N flanks. Frequent small-to-moderate phreatic eruptions have occurred during the 20th century from both summit and flank vents. An eruption in 1915 produced a lahar that created Taishoike pond and killed the trees in the foreground.

Photo by Lee Siebert, 1977 (Smithsonian Institution).

A lahar during an eruption of Yakedake volcano in 1915 dammed the Azusagawa river to form the Taishoike pond, leaving these standing dead trees. The eruption began on 6 June 1915 from a 1-km-long fracture that extended from the summit down the ESE flank where about 50 vents opened, but the principal activity took place at the upper end.

Photo by Lee Siebert (Smithsonian Institution).

Smithsonian Sample Collections Database

There are no samples for Yakedake in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites

Copernicus Browser

The Copernicus Browser replaced the Sentinel Hub Playground browser in 2023, to provide access to Earth observation archives from the Copernicus Data Space Ecosystem, the main distribution platform for data from the EU Copernicus missions.

MIROVA

Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.

MODVOLC Thermal Alerts

Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.

WOVOdat
   Single Volcano View
   Temporal Evolution of Unrest
   Side by Side Volcanoes

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

GVMID Data on Volcano Monitoring Infrastructure The Global Volcano Monitoring Infrastructure Database GVMID, is aimed at documenting and improving capabilities of volcano monitoring from the ground and space. GVMID should provide a snapshot and baseline view of the techniques and instrumentation that are in place at various volcanoes, which can be use by volcano observatories as reference to setup new monitoring system or improving networks at a specific volcano. These data will allow identification of what monitoring gaps exist, which can be then targeted by remote sensing infrastructure and future instrument deployments.

Volcanic Hazard Maps

The IAVCEI Commission on Volcanic Hazards and Risk has a Volcanic Hazard Maps database designed to serve as a resource for hazard mappers (or other interested parties) to explore how common issues in hazard map development have been addressed at different volcanoes, in different countries, for different hazards, and for different intended audiences. In addition to the comprehensive, searchable Volcanic Hazard Maps Database, this website contains information about diversity of volcanic hazard maps, illustrated using examples from the database. This site is for educational purposes related to volcanic hazard maps. Hazard maps found on this website should not be used for emergency purposes. For the most recent, official hazard map for a particular volcano, please seek out the proper institutional authorities on the matter.

IRIS seismic stations/networks

Incorporated Research Institutions for Seismology (IRIS) Data Services map showing the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Yakedake. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice.

UNAVCO GPS/GNSS stations

Geodetic Data Services map from UNAVCO showing the location of GPS/GNSS stations from all available networks (permanent or temporary) within a radius of 20 km from the given location of Yakedake. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player.

DECADE Data

The DECADE portal, still in the developmental stage, serves as an example of the proposed interoperability between The Smithsonian Institution's Global Volcanism Program, the Mapping Gas Emissions (MaGa) Database, and the EarthChem Geochemical Portal. The Deep Earth Carbon Degassing (DECADE) initiative seeks to use new and established technologies to determine accurate global fluxes of volcanic CO₂ to the atmosphere, but installing CO₂ monitoring networks on 20 of the world's 150 most actively degassing volcanoes. The group uses related laboratory-based studies (direct gas sampling and analysis, melt inclusions) to provide new data for direct degassing of deep earth carbon to the atmosphere.

Large Eruptions of Yakedake

Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

EarthChem

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).