Shiretoko-Iozan

Photo of this volcano
Country Japan
Volcanic Region Kuril Volcanic Arc
Landform | Volc Type Composite | Stratovolcano
Last Known Eruption 1936 CE
Coordinates 44.133°N, 145.161°E
Elevation 1,562 m (5,125 ft)
Volcano Number 285090
Google Earth icon Google Earth Placemark with Features
Citation icon Cite Volcano Profile

Latest Weekly Volcanic Activity Report

The Global Volcanism Program has no Weekly Volcanic Activity Reports available for Shiretoko-Iozan.

Latest Bulletin Report

The Global Volcanism Program has no Bulletin Reports available for Shiretoko-Iozan.

Weekly Volcanic Activity Reports

The Global Volcanism Program has no Weekly Reports available for Shiretoko-Iozan.

Bulletin Reports

The Global Volcanism Program has no Bulletin Reports available for Shiretoko-Iozan.

General Information

Eruptive History

There is data available for 6 confirmed eruptive periods.

1935 Dec 16 ± 15 days - 1936 Oct 16 ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 1

Episode 1 | Eruption (Explosive / Effusive) NW flank
1935 Dec 16 ± 15 days - 1936 Oct 16 ± 15 days Evidence from Observations: Reported

List of 3 Events for Episode 1 at NW flank

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity moderate
   - - - -    - - - - Observation Liquid sulfur
1935 Dec    - - - - VEI (Explosivity Index)

1890 Jun 15 Confirmed Eruption (Explosive / Effusive) VEI: 1

Episode 1 | Eruption (Explosive / Effusive) NW flank
1890 Jun 15 - Unknown Evidence from Observations: Reported

List of 3 Events for Episode 1 at NW flank

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity moderate
   - - - -    - - - - Fumarolic or Solfataric
1890 Jun 15    - - - - VEI (Explosivity Index)

1889 Aug 9 - 1889 Oct 7 ± 7 days Confirmed Eruption (Explosive / Effusive) VEI: 2 (?)

Episode 1 | Eruption (Explosive / Effusive) NW flank
1889 Aug 9 - 1889 Oct 7 ± 7 days Evidence from Observations: Reported

List of 3 Events for Episode 1 at NW flank

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity moderate
   - - - -    - - - - Observation Liquid sulfur
1889 Aug 9    - - - - VEI (Explosivity Index)

[ 1880 Nov 24 - 1880 Nov 26 ] Uncertain Eruption

Episode 1 | Eruption (Explosive / Effusive)
1880 Nov 24 - 1880 Nov 26 Evidence from Unknown

List of 1 Events for Episode 1

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

1876 Sep 23 - 1876 Sep 26 Confirmed Eruption (Explosive / Effusive) VEI: 2

Episode 1 | Eruption (Explosive / Effusive) NW flank
1876 Sep 23 - 1876 Sep 26 Evidence from Observations: Reported

List of 2 Events for Episode 1 at NW flank

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity weak or small
1876 Sep 23    - - - - VEI (Explosivity Index)

1857 Jul 2 ± 182 days - 1858 Jul 2 ± 182 days Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive)
1857 Jul 2 ± 182 days - 1858 Jul 2 ± 182 days Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity Uncertain
   - - - -    - - - - Volcanic "smoke"
   - - - -    - - - - Observation Liquid sulfur

0850 ± 500 years Confirmed Eruption (Explosive / Effusive)  

Episode 1 | Eruption (Explosive / Effusive) St-1 tephra
0850 ± 500 years - Unknown Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at St-1 tephra

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

Synonyms and Subfeatures

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.

Smithsonian Sample Collections Database

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

External Sites