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Actualités
mer., 9 sept. 2020, 06:23
Makushin volcano yesterday (image: AVO)
The Alaska Volcano Observatory (AVO) reported that the seismicity at the volcano has been steadily declining for months, following an earthquake sequence that began on 15 June. ... lire toutes
jeu., 30 juil. 2020, 21:21
Cloudy Skies at Makushin volcano (C) U.S. Geological Survey
The Alaskan Volcano Observatory (AVO) report that the small earthquakes which began on June 15 continues. These earthquakes are located southeast of the summit. No activity was observed in cloudy satellite and web camera imagery. lire toutes
 

Makushin volcan

Stratovolcano 1800 m / 5,905 ft
Aleutian Islands, 53.89°N / -166.92°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 9 Sep 2020 (Volcanic Alert Level lowered to Green)

Makushin volcano is an ice-covered 1800-m-high stratovolcano on northern Unalaska Island west of the town of Dutch Harbor. The volcano contains a 2.5-km-wide caldera. Its broad, domical shape contrasts with the usual steep-sided profile of most other volcanoes in the Aleutians.

Style éruptif tipique: unspecified
Eruptions du volcan Makushin: 1995 

Derniers séismes proches

HeureMag. / ProfondeurDistanceLocation
Fri, 13 Nov 2020 (GMT)
13 Nov 2020 15:27:26 GMT
0.4

18 km - Plus
3 km County, 27 km west de Unalaska (Aleutians West County), Alaska, USA

Introduction

Much of the volcano was formed during the Pleistocene, but the caldera (which formed about 8000 years ago), Sugarloaf cone on the ENE flank, and a cluster of about a dozen explosion pits and cinder cones at Point Kadin on the WNW flank, are of Holocene age. A broad band of NE-SW-trending satellitic vents cuts across the volcano. The composite Pakushin cone, with multiple summit craters, lies 8 km to the SW of Makushin. Frequent explosive eruptions have occurred during the past 4000 years, sometimes accompanied by pyroclastic flows and surges. Geothermal areas are found in the summit caldera of Makushin and on the SE and eastern flanks of the volcano. They represent the largest and most investigated high-temperature geothermal resources in Alaska. Small-to-moderate explosive eruptions have been recorded at Makushin since 1786.
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Smithsonian / GVP volcano information

Derniers images satellite


See also: Sentinel hub | Landsat 8

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