World Map › Oshima Ōshima
Volcano
Oshima Ōshima
Stratovolcano · 732 m · Japan
Oshima Ōshima sits on the Okhotsk Plate, in a subduction zone. 6 eruptions are known since the end of the last ice age, the most recent in 1790. Its major eruptions caused at least 2,000 deaths.
- Elevation
- 732 m
- Type
- Stratovolcano
- Tectonic Setting
- Subduction zone, continental crust
- Dominant Rock
- Basalt / Picro-Basalt
- Plate
- Okhotsk Plate
- Country
- Japan
- Last Eruption
- 1790
- Known Eruptions (Holocene)
- 6
- Max. Explosivity (VEI)
- 4
- Known Fatalities
- 2,000
Eruption Timeline
Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).
Eruption Deadly Eruption (NOAA) Uncertain Date
Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata