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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Hokkaido-Komagatake
Komagatake on the Oshima Peninsula of southern Hokkaido rises to the N above Lake Onuma and is one of the most active volcanoes of Japan's northernmost island. The summit formed as a result of edifice collapse and hummocky debris avalanche deposits were responsible for the formation of Lake Onuma. A period of more frequent explosive activity began with a major explosive eruption in 1640. Photo by Ichio Moriya (Kanazawa University).
Volcano Number:
285020
Volcano Name:
Hokkaido-Komagatake
Country:
Japan
Volcano Type:
Stratovolcano
Last Eruption:
2000 CE
Elevation:
1131m
Tectonic Setting:
Subduction zone / Continental crust (> 25 km)
Pop. within 5km:
173
Pop. within 10km:
23091
Pop. within 30km:
234213
Pop. within 100km:
962081
Latitude:
42.063
Longitude:
140.677
Details
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Much of the truncated Hokkaido-Komagatake andesitic volcano on the Oshima Peninsula of southern Hokkaido is Pleistocene in age. The sharp-topped summit lies at the western side of a large breached crater that formed as a result of edifice collapse in 1640 CE. Hummocky debris avalanche material occurs at the base of the volcano on three sides. Two late-Pleistocene and two Holocene Plinian eruptions occurred prior to the first historical eruption in 1640, which began a period of more frequent explosive activity. The 1640 eruption, one of the largest in Japan during historical time, deposited ash as far away as central Honshu and produced a debris avalanche that reached the sea. The resulting tsunami caused 700 fatalities. Three Plinian eruptions have occurred since 1640; in 1694, 1856, and 1929.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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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
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Data from the SESAR Database
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Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.
Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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