Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Kozushima
The cultivated floor of an explosion crater (left) and a flat-topped lava dome (right) are part of Kozu-shima volcano in the northern Izu Islands. The small 4 x 6 km island is formed by a cluster of rhyolitic lava domes and associated pyroclastic deposits. The youngest and largest dome, 574-m-high Tenjo-yama, occupies the central portion of the island. Most of the older domes flank Tenjo-yama on the north. Only two historical eruptions, from the 9th century, are known. Photo by Ichio Moriya (Kanazawa University).
Volcano Number:284030
Volcano Name:Kozushima
Country:Japan
Volcano Type:Lava dome(s)
Last Eruption:838 CE
Elevation:572m
Tectonic Setting:Subduction zone / Oceanic crust (< 15 km)
Pop. within 5km:2406
Pop. within 10km:2406
Pop. within 30km:5716
Pop. within 100km:442731
Latitude:34.219
Longitude:139.153



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
284030 Kozushima 17576 Confirmed Eruption 4 Tenjo-san Historical Observations 838/8/2
284030 Kozushima 18250 Confirmed Eruption Jogo-yama Tephrochronology -8050
284030 Kozushima 18251 Confirmed Eruption N tip of island (Anano-yama, Hanatabe) Hydration Rind -750
284030 Kozushima 18252 Confirmed Eruption NW tip of island (Kobe-yama) Hydration Rind -100
284030 Kozushima 18253 Uncertain Eruption 832
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


Data from the SESAR Database


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