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Atka Volcano

Updated: 16 апр 2024 19:24 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)
Last update: 10 апр 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)

[smaller] [larger]
Typical eruption style: unspecified
Atka volcano eruptions: 1987 

Latest nearby earthquakes

ВремяМагнитуда / ГлубинаРасстояние / Местоположение
12 апр 17:24 (Adak)
0.6

6.6 km
1.6 km к северо-западу 16 km NNE of Atka, Alaska
Более
Пятница, 12 апреля 2024 GMT (2 земл.)
12 апр 08:19 (Adak)
0.5

3.6 km
2 km к юго-западу 13 km NNE of Atka, Alaska
Более
12 апр 04:05 (Adak)
0.6

2.9 km
3.7 km к юго-западу 13 km N of Atka, Alaska
Более
Суббота, 6 апреля 2024 GMT (1 земл.)
6 апр 02:05 (Adak)
1.7

31 km
20 km к северо-востоку 32 km NE of Atka, Alaska
Более

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 Volcano Photos

Latest satellite images

atka satellite image sat1atka satellite image sat2
Wed, 10 Apr 2024, 14:00

Atka Volcanic Complex volcano (Andreanof Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 3 April-9 April 2024 (New Activity / Unrest)

AVO lowered the Volcano Alert Level for the Atka volcanic complex to Normal (the lowest level on a four-level scale) and the Aviation Color Code to Green (the lowest color on a four-color scale) at 0734 on 9 April. The report noted that activity at the volcano had decreased following the small explosion at the summit crater of Korovin on 27 March, one of the volcanoes at the complex. Though occasional small earthquakes and weak volcanic tremor continued to be recorded, the activity was at background levels. ... Read all
Wed, 10 Apr 2024, 02:33

Atka volcano (Aleutian Islands): alert level lowered to Green

The activity at the volcano has subsided following the minor explosion detected at the summit crater of Korovin on 27 March. ... Read all

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