Atka Volcano
Updated: Sep 14, 2024 23:29 GMT -
Stratovolcanoes 1451 m / 4,760 ft
United States, Aleutian Islands, 52.33°N / -174.14°W
Current status: normal or dormant (1 out of 5)
United States, Aleutian Islands, 52.33°N / -174.14°W
Current status: normal or dormant (1 out of 5)
Last update: 10 Apr 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)
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Atka volcano eruptions: 1987
Latest nearby earthquakes
| Time | Mag. / Depth | Distance / Location | |||
| Sep 13, 10:56 am (Adak) | 1.0 5.5 km |  14 km NNE of Atka, Alaska | Info | ||
| Sep 12, 10:28 pm (Adak) | 0.2 5.7 km | 14 km N of Atka, Alaska | Info | ||
| Sep 12, 10:28 pm (Adak) | 0.2 5.3 km | 13 km N of Atka, Alaska | Info | ||
| Friday, September 6, 2024 GMT (1 quake) | |||||
| Sep 6, 09:08 am (Adak) | 0.9 3.4 km | 13 km N of Atka, Alaska | Info | ||
| Monday, September 2, 2024 GMT (1 quake) | |||||
| Sep 1, 05:13 pm (Adak) | 0.3 9.8 km | 28 km N of Atka, Alaska | Info | ||
Background
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
Atka Volcano Photos
Erupting Klyuchevskoy volcano, Kamchatka, with the new lava flow and Kamen volcano (Sep 2013) (Photo: Sergey Krasnoshchokov)
KLYOUCHEVSKOY, KAMCHATKA July 2011 (Photo: kayapo)
The crater lake of Maly Semyachik, Kamchatka (Photo: kaylash)
Koryaksky Volcano rising above city of Petropavlovsk, Kamchatka (Photo: Richard Roscoe)
Latest satellite images
