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Stratovolcanoes 1451 m / 4,760 ft
Style éruptif tipique
United States, Aleutian Islands, 52.33°N / -174.14°W
Condition actuelle: normal / en sommeil (1 sur 5)
Eruptions du volcan Atka
|Heure||Mag. / Profondeur||Distance||Location|
|Fri, 20 Nov 2020 (GMT)|
|20 Nov 2020 20:04:05 GMT|
9.3 km - Plus
|8 km||9 km NE of Atka, Alaska, USA|
|Thu, 12 Nov 2020 (GMT)|
|12 Nov 2020 15:18:11 GMT|
5.3 km - Plus
|1 km||17 km north de Atka, Aleutians West County, Alaska, USA|
The largest volcanic center in the central Aleutians, Atka consists of a central shield and Pleistocene caldera with several post-caldera volcanoes. A major dacitic explosive eruption accompanied formation of the caldera about 500,000 to 300,000 years ago. The most prominent of the post-caldera stratovolcanoes are Kliuchef and Sarichef, both of which may have been active in historical time. Sarichef has a symmetrical profile, but the less eroded Kliuchef is the source of most if not all historical eruptions. Kliuchef may have been active on occasion simultaneously with Korovin volcano to the north. Hot springs and fumaroles are located on the flanks of Mount Kliuchef and in a glacial valley SW of Kliuchef.
Smithsonian / GVP volcano information
See also: Sentinel hub
| Landsat 8
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