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Tori-shima

Izu-Torishima

Stratovolcano · Japan · 394m

This photo taken on 12 August 2002 shows an ash plume rising from Torishima volcano, a 2.7-km-wide island in the southern Izu Islands. The unvegetated Iwoyama cone, seen here from the south, was constructed during an eruption in 1939 within a 1.5-km-wide caldera. The volcano is also referred to as Izu-Torishima to distinguish it from the several other Japanese island volcanoes called Torishima ("Bird Island").
This photo taken on 12 August 2002 shows an ash plume rising from Torishima volcano, a 2.7-km-wide island in the southern Izu Islands. The unvegetated Iwoyama cone, seen here from the south, was constructed during an eruption in 1939 within a 1.5-km-wide caldera. The volcano is also referred to as Izu-Torishima to distinguish it from the several other Japanese island volcanoes called Torishima ("Bird Island"). · Photo: Photo courtesy of Japan Meteorological Agency, 2002. · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Northwestern Pacific Volcanic Regions / Izu Volcanic Arc
Elevation
394m
Coordinates
30.484, 140.303
Last eruption
2002
Tectonic setting
Subduction zone / Oceanic crust (< 15 km)
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

The circular, 2.7-km-wide island of Izu-Torishima in the southern Izu Islands is capped by an unvegetated summit cone formed during an eruption in 1939. Fresh lava flows from this eruption form part of the northern coastline of the basaltic-to-dacitic edifice. The volcano is referred to as Izu-Torishima to distinguish it from the several other Japanese island volcanoes called Torishima ("Bird Island"). The main cone is truncated by a 1.5-km-wide caldera that contains two central cones, of which Ioyama is the highest. Historical eruptions have also occurred from flank vents near the north coast and offshore submarine vents. A submarine caldera 6-8 km wide lies immediately to the north.

From Wikipedia

Tori-shima 'Bird Island', or Izu-Torishima 'Bird Island of Izu Province') is an uninhabited Japanese island in the Pacific Ocean. The volcanic island is part of the Izu Islands.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1871~1885 · 1 eruptions · max VEI 01899~1914 · 1 eruptions · max VEI 31928~1942 · 1 eruptions · max VEI 31956~1970 · 1 eruptions · max VEI 01970~1985 · 1 eruptions · max VEI 21999~2013 · 2 eruptions · max VEI 218711899194219701999

Detailed timeline

  1. 2013VEI 2Observed
    2013-07-06 – 2013-07-06
  2. 2002VEI 2Observed
    2002-08-12 – 2002-08-20
    Iwo-yama
  3. 1975VEI 2Observed
    1975-10-02 – Ongoing
    9 km S of Torishima
  4. 1965VEI 0Observed
    1965-11-13 – 1965-12-05
  5. 1939VEI 3Observed
    1939-08-17 – 1939-12-26
    North side of 1902 crater (Iwo-yama)
  6. 1902VEI 3Observed
    1902-08-07 – 1902-08-24
    Komochi-yama, N & SW offshore flanks
  7. 1871VEI 0Observed
    1871-04 – Ongoing

External links

⚠ For reference only. Not for emergency response.