Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Oshima-Oshima
Oshima-Oshima volcano is seen here from the north with Kanpo-dake, the pyroclastic cone formed following the 1741 eruption on the center horizon. Major edifice collapse in that year produced a large horseshoe-shaped caldera open to the north, whose walls are visible at the sides of the image. Oshima-Oshima, a small, 4-km-wide Japan Sea island 55 km west of the SW tip of Hokkaido, is the emergent summit of two coalescing stratovolcanoes, Higashi-yama, at the east end of the island, and Nishi-yama at the west end. Copyrighted photo by Tomoyo Hayakawa (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).
Volcano Number:285010
Volcano Name:Oshima-Oshima
Country:Japan
Volcano Type:Stratovolcano
Last Eruption:1790 CE
Elevation:732m
Tectonic Setting:Subduction zone / Continental crust (> 25 km)
Pop. within 5km:6
Pop. within 10km:6
Pop. within 30km:6
Pop. within 100km:88023
Latitude:41.51
Longitude:139.367



Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number Volcano Name Eruption Number Activity Type Explosivity Index Max Explosivity Index Modifier Activity Area Activity Unit Start Evidence Method Start Date End Date
285010 Oshima-Oshima 18553 Confirmed Eruption Nishi-yama Radiocarbon (uncorrected) -800
285010 Oshima-Oshima 18554 Confirmed Eruption Nishi-yama Radiocarbon (uncorrected) 250
285010 Oshima-Oshima 18555 Confirmed Eruption 4 Nishi-yama Historical Observations 1741/8/18 1742
285010 Oshima-Oshima 18556 Confirmed Eruption 2 Nishi-yama Historical Observations 1759/8/19
285010 Oshima-Oshima 18557 Uncertain Eruption 2 ? Nishi-yama 1786
285010 Oshima-Oshima 18558 Confirmed Eruption 2 Nishi-yama Historical Observations 1790
Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.


Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
Sorry. No data exist for this volcano in the EarthChem Portal.


Data from the SESAR Database
Sorry. No data exist for this volcano in the SESAR database.


Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.