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Io-Torishima

No photo available for this volcano
  • Japan
  • Ryukyu Volcanic Arc
  • Composite | Complex
  • 1968 CE
  • Country
  • Volcanic Province
  • Landform | Volc Type
  • Last Known Eruption
  • 27.881°N
  • 128.223°E

  • 212 m
    696 ft

  • 282020
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports available for Io-Torishima.

The Global Volcanism Program has no Weekly Reports available for Io-Torishima.

The Global Volcanism Program has no Bulletin Reports available for Io-Torishima.

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.

Eruptive History

There is data available for 9 confirmed Holocene eruptive periods.

1968 Jul 18 - 1968 Jul 18 Confirmed Eruption Max VEI: 1

Episode 1 | Eruption Episode
1968 Jul 18 - 1968 Jul 18 Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity weak or small
   - - - -    - - - - Ash weak or small
1968 Jul 18    - - - - VEI (Explosivity Index)

1967 Nov 25 ± 5 days Confirmed Eruption Max VEI: 1

Episode 1 | Eruption Episode
1967 Nov 25 ± 5 days - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity Uncertain
1967 Nov 25 ± 5 days    - - - - VEI (Explosivity Index)

1959 Jun 8 - 1959 Jul 16 ± 15 days Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode Iwo-dake
1959 Jun 8 - 1959 Jul 16 ± 15 days Evidence from Observations: Reported

List of 7 Events for Episode 1 at Iwo-dake

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Eruption cloud
   - - - -    - - - - Ash
   - - - -    - - - - Scoria
   - - - -    - - - - Fumarolic or Solfataric
   - - - -    - - - - Evacuations
1959 Jun 8    - - - - VEI (Explosivity Index)

1903 Mar 15 ± 5 days - 1903 Aug 26 ± 5 days Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode
1903 Mar 15 ± 5 days - 1903 Aug 26 ± 5 days Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
1903 Mar 15 ± 5 days    - - - - VEI (Explosivity Index)

1868 Feb - 1868 Apr Confirmed Eruption Max VEI: 1

Episode 1 | Eruption Episode
1868 Feb - 1868 Apr Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain
   - - - -    - - - - Ash
1868 Feb    - - - - VEI (Explosivity Index)

1855 Mar - 1855 May Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode
1855 Mar - 1855 May Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain
   - - - -    - - - - Ash
1855 Mar    - - - - VEI (Explosivity Index)

1829 Dec 1 - 1829 Dec 16 Confirmed Eruption Max VEI: 1 (?)

Episode 1 | Eruption Episode
1829 Dec 1 - 1829 Dec 16 Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity Uncertain
1829 Dec 1    - - - - VEI (Explosivity Index)

1796 Oct - 1796 Nov Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode Iwo-dake
1796 Oct - 1796 Nov Evidence from Observations: Reported

List of 3 Events for Episode 1 at Iwo-dake

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain
   - - - -    - - - - Ash
1796 Oct    - - - - VEI (Explosivity Index)

1664 Confirmed Eruption  

Episode 1 | Eruption Episode
1664 - Unknown Evidence from Observations: Reported

List of 6 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Avalanche
   - - - -    - - - - Earthquakes (undefined)
   - - - -    - - - - Tsunami
   - - - -    - - - - Property Damage
   - - - -    - - - - Evacuations
1664    - - - - Fatalities
Deformation History

There is no Deformation History data available for Io-Torishima.

Emission History

There is no Emissions History data available for Io-Torishima.

Photo Gallery

The Global Volcanism Program has no photographs available for Io-Torishima.

GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

Smithsonian Sample Collections Database

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

External Sites