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Atka volcano

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) | Reports
Atka volcano books
Typical eruption style: unspecified
Atka volcano eruptions: 1987 
TimeMag. / DepthDistanceLocation
Fri, 2 Oct 2020 (UTC)
Fri, 2 Oct 16:48 UTCM 0.5 / 12.4 km10 km13 Km ENE of Atka, Alaska, USA
Tue, 1 Sep 2020 (UTC)
Tue, 1 Sep 00:43 UTCM 0.5 / 3.7 km26 km13 Km WSW of Atka, Alaska (USA)
Mon, 31 Aug 2020 (UTC)
Mon, 31 Aug 12:28 UTCM 2.7 / 188.8 km18 km16 Km NW of Atka, Alaska (USA)
Mon, 31 Aug 12:28 UTCM 3.7 / 192.6 km16 kmAndreanof Islands, Aleutian Islands, Alaska (USA)
Thu, 20 Aug 2020 (UTC)
Thu, 20 Aug 19:12 UTCM 3.4 / 187 km28 kmAndreanof Islands, Aleutian Is. (USA)
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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.
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Smithsonian / GVP volcano information

Atka Photos:

Koryaksky Volcano rising above city of Petropavlovsk, Kamchatka (Photo: Richard Roscoe)
Koryaksky Volcano rising above city of Petropavlovsk, Kamchatka (Photo: Richard Roscoe)
View towards the southern tip of Kamchatka in the distance (Photo: Tom Pfeiffer)
View towards the southern tip of Kamchatka in the distance (Photo: Tom Pfeiffer)
At the rim of the largest canyon of Central Kamchatka: it is almost 1000 deep and the natural watershed between the northern and the southern volcanoes in the group. (Photo: Tom Pfeiffer)
At the rim of the largest canyon of Central Kamchatka: it is almost 1000 deep and the natural watershed between the northern and the southern volcanoes in the group. (Pho...
 


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