Atsonupuri Volcan, Iturup Island (Iles Kuriles)

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Atsonupuri volcan

stratovolcan 1206 m / 3,957 ft
Iturup Island, Iles Kuriles, 44.81°N / 147.14°E
Condition actuelle: en sommeil (1 sur 5)

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Style éruptif tipique: Explosive
Eruptions du volcan Atsonupuri : 1932, 1812
Derniers séismes proches:

Time	Mag. / Depth	Distance	Location
Sun, 7 Apr
Sun, 7 Apr 07:52 UTC	M 3.2 / 174 km	23 km	択捉島付近 (Near Etorofu island)
Wed, 3 Apr
Wed, 3 Apr 05:13 UTC	M 4.2 / 155 km	4 km	KURIL ISLANDS
Sat, 23 Mar
Sat, 23 Mar 16:42 UTC	M 3.7 / 169 km	4 km	択捉島付近 (Near Etorofu island)
Sun, 17 Mar
Sun, 17 Mar 17:40 UTC	M 2.7 / 168 km	24 km	択捉島付近 (Near Etorofu island)
Mon, 11 Mar
Mon, 11 Mar 09:45 UTC	M 2.3 / 150 km	25 km	択捉島付近 (Near Etorofu island)

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Atsonupuri volcano is a mostly basaltic stratovolcano in the southern Kurile Islands, Russia, located ca. 150 km NE of Hokkaido, Japan.
Atsonupuri volcano forms a prominent peninsula at the SW side of Iturup Island connected by a 30 m low isthmus. The volcano has often had strombolian eruptions such as its historic eruptions and produced a few lava flows.

Introduction:

Atsonupuri volcano has a somma volcano (the remnant of an older edifice) whose rim is exposed at 900 m elevation on the SE side. The precessor of Atsonupuri was active in the late Pleistocene or early Holocene and once formed an island up to about 1.5 km high, which was later connected to Iturup Island by sediments.
An important normal fault cuts through the NW side of the somma of Atsonupuri (also known as Etorofu-Atosanupuri).
The 2-km-wide caldera was largely filled and overtopped by a central cone that forms the present-day summit.

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