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)
Last update: 27 Aug 2021 (Volcanic Alert Level lowered to Green)

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Typical eruption style: unspecified
Atka volcano eruptions: 1987 

TimeMag. / DepthDistance/Location
Friday, October 15, 2021 17:57 GMT (1 earthquake)
Oct 15, 2021 8:57 am (GMT -9) (Oct 15, 2021 17:57 GMT)
0.6

7.8 km
5.5 km (3.4 mi)
10 Km NNE of Atka, Alaska
Wednesday, October 6, 2021 14:57 GMT (1 earthquake)
Oct 6, 2021 5:57 am (GMT -9) (Oct 6, 2021 14:57 GMT)
1.2

30 km
8.8 km (5.5 mi)
24 Km N of Atka, Alaska

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...
On the way back to Kamchatka, we pass the Birds' Islands north of Paramushir. (Photo: Tom Pfeiffer)
On the way back to Kamchatka, we pass the Birds'Islands north of Paramushir. (Photo: Tom Pfeiffer)
 



See also: Sentinel hub | Landsat 8
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