Atka Volcano
Updated: 6 mai 2024 10:49 GMT -
Stratovolcanoes 1451 m / 4,760 ft
United States, Aleutian Islands, 52.33°N / -174.14°W
Condition actuelle: normal / en sommeil (1 sur 5)
United States, Aleutian Islands, 52.33°N / -174.14°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 10 avril 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)
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Eruptions du volcan Atka: 1987
Derniers séismes proches
Heure | Mag. / Profondeur | Distance / Lieu | |||
2 mai 23:59 (Adak) | 0.9 6.2 km | 19 km NNE of Atka, Alaska | Info | ||
mardi, 30 avril 2024 GMT (1 séisme) | |||||
30 avril 09:41 (Adak) | 0.5 1.9 km | 14 km N of Atka, Alaska | Info | ||
lundi, 29 avril 2024 GMT (2 séismes) | |||||
29 avril 04:14 (Adak) | 0.7 3.5 km | 12 km N of Atka, Alaska | Info | ||
28 avril 15:28 (Adak) | 0.8 9.7 km | 12 km NNE of Atka, Alaska | Info | ||
dimanche, 28 avril 2024 GMT (1 séisme) | |||||
27 avril 15:27 (Adak) | 0.3 6.6 km | 24 km NNE of Atka, Alaska | Info | ||
samedi, 27 avril 2024 GMT (1 séisme) | |||||
26 avril 22:00 (Adak) | 0.3 4.2 km | 22 km N of Atka, Alaska | Info |
Introduction
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
Éruption du volcan Klyuchevskoy, Kamchatka, avec la nouvelle coulée de lave et le volcan Kamen (septembre 2013) (Photo: Sergey Krasnoshchokov)
KLYOUCHEVSKOY, KAMCHATKA Juillet 2011 (Photo: kayapo)
Le lac de cratère de Maly Semyachik, Kamchatka (Photo: kaylash)
Volcan Koryaksky s'élevant au-dessus de la ville de Petropavlovsk, Kamtchatka (Photo: Richard Roscoe)