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mer., 9 sept. 2020, 06:23

Makushin volcano (Aleutian Islands): Volcanic Alert Level lowered to Green

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. ... Read all
mer., 2 sept. 2020, 06:00

Makushin volcano (Fox Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 2 September-8 September 2020 (Continuing Activity)

Seismicity at Makushin returned to background levels after steadily declining for almost three months following a sequence of earthquakes about 10 km E of the summit at a depth of 8 km that had started on 15 June. AVO lowered the Aviation Color Code and Volcano Alert Level remained at Green and Normal, respectively, on 8 September. ... Read all

Makushin volcan

Mise à jour: 6 févr.. 2023 15:45 GMT -
Stratovolcano 1800 m / 5,905 ft
Aleutian Islands, 53.89°N / -166.92°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 12 Dec 2021 (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.

Montrer carte interactive
Style éruptif tipique: unspecified
Eruptions du volcan Makushin: 1995

Derniers séismes proches

HeureMag. / ProfondeurDistance/Lieu
vendredi, 3 février 2023 GMT (4 séismes)
3 févr. 2023 12:00 (GMT -9) (3 févr.. 2023 21:00 GMT)

15 km
30 km (19 mi)
4 Km ESE of Unalaska, Alaska
3 févr. 2023 12:00 (GMT -9) (3 févr.. 2023 21:00 GMT)

10 km
30 km (19 mi)
4 Km E of Unalaska, Alaska
3 févr. 2023 11:52 (GMT -9) (3 févr.. 2023 20:52 GMT)

13 km
31 km (19 mi)
Fox Islands, Aleutian Islands, Alaska
3 févr. 2023 11:52 (GMT -9) (3 févr.. 2023 20:52 GMT)

12 km
30 km (19 mi)
4 Km ESE of Unalaska, Alaska
mardi, 24 janvier 2023 GMT (1 séisme)
24 janv. 2023 14:01 (GMT -9) (24 janv.. 2023 23:01 GMT)

74 km
32 km (20 mi)
34 km au sud-ouest de Unalaska, Zone de recensement d'Aleutians West, Alaska, États-Unis


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.
Smithsonian / GVP volcano information

See also: Sentinel hub | Landsat 8 | NASA FIRMS
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