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Io-Torishima

Photo of this volcano
  • Japan
  • Japan, Taiwan, Marianas
  • Complex
  • 1968 CE
  • Country
  • Volcanic Region
  • Primary Volcano 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 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 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1968 Jul 18 1968 Jul 18 Confirmed 1 Historical Observations
1967 Nov 25 ± 5 days Unknown Confirmed 1 Historical Observations
1959 Jun 8 1959 Jul 16 ± 15 days Confirmed 2 Historical Observations Iwo-dake
1903 Mar 15 ± 5 days 1903 Aug 26 ± 5 days Confirmed 2 Historical Observations
1868 Feb 1868 Apr Confirmed 1 Historical Observations
1855 Mar 1855 May Confirmed 2 Historical Observations
1829 Dec 1 1829 Dec 16 Confirmed 1 Historical Observations
1796 Oct 1796 Nov Confirmed 2 Historical Observations Iwo-dake
1664 Unknown Confirmed   Historical Observations
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 island of Tori-shima is seen in an aerial perspective from the SW in this computer-generated graphic image. The 1 x 2.7 km island (also known as Okinawa-Tori-shima), consists of two overlapping volcanoes. Iwo-dake (Sulfur Peak) forms the summit of the NW volcano (left), which contains a small lake, solfataras, and sulfur deposits that were mined in the past. A lava dome occupies the center of the inner of two sommas on the SE-most volcano (right), whose high point, Mae-dake, lies at the SE tip of the island.

Photo courtesy of Bird's-Eye Japan (http://www.medianetjapan.com/2/town/internet_computer/birds/).
See title for photo information.
GVP Map Holdings

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. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.

Title: Japan
Publisher: DMA Aerospace Center
Country: Japan
Year: 1988
Series: TPC
Map Type: Topographic
Scale: 1:500,000
Map of Japan
Title: (C) Q Maps of Japan Landforms, Geol, Tect: SWest
Publisher: Univ of Tokyo Press & Japan Association for Quaternary Research
Country: Japan
Year: 1987
Map Type: Geology
Scale: 1:1,000,000
Map of (C) Q Maps of Japan Landforms, Geol, Tect: SWest
Title: Historical Japan
Publisher: National Geographic Society
Country: Japan
Year: 1984
Series: National Geographic
Map Type: Geographic
Scale: 1:2,982,000
Map of Historical Japan
Title: Japan
Publisher: DMA Aerospace Center
Country: Japan
Year: 1984
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Japan
Title: Geol Map of Japan/ Geol Atlas
Publisher: Geol Survey of Japan
Country: Japan
Year: 1982
Map Type: Geology
Scale: 1:1,000,000
Map of Geol Map of Japan/ Geol Atlas
Title: South Japan
Publisher: Geographical Survey Institute of Japan
Country: Japan
Year: 1980
Series: CIM 1:1 mil
Map Type: Topographic
Scale: 1:1,000,000
Map of South Japan
Title: South Japan
Publisher: Geographical Survey Institute of Japan
Country: Japan
Year: 1980
Map Type: Topographic
Scale: 1:1,000,000
Map of South Japan
Title: South Japan
Publisher: Geographical Survey Institute of Japan
Country: Japan
Year: 1980
Map Type: Topographic
Scale: 1:1,000,000
Map of South Japan
Title: Geological Map of Japan
Publisher: Geological Survey of Japan
Country: Japan
Year: 1978
Map Type: Geology
Scale: 1:1,000,000
Map of Geological Map of Japan
Title: Tokuno-Shima
Publisher: US Army Map Service
Country: Japan
Year: 1950
Series: AMS
Map Type: Topographic
Scale: 1:250,000
Map of Tokuno-Shima
Title: Kagoshima
Publisher: US Army Map Service
Country: Japan
Year: 1945
Series: AMS
Map Type: Topographic
Scale: 1:1,000,000
Map of Kagoshima
Title: Naha
Publisher: US Army Map Service
Country: Japan
Year: 1944
Series: AMS
Map Type: Topographic
Scale: 1:1,000,000
Map of Naha
Smithsonian Sample Collections Database

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

Affiliated Sites