Makushin (Aleutian Islands): Small earthquakes continue since last update

jeu., 30 juil. 2020, 21:21
Cloudy Skies at Makushin volcano (C) U.S. Geological Survey
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.

AVO mention that the earthquake sequence may be associated with volcanic unrest, but there have been no signs of deformation or surface activity noted in other monitoring data. Should an eruption occur, it would be likely to see additional signs of unrest prior to the onset. Also, the main hazard would likely be from airborne ash and ash fall.

Actualités précédentes

mer., 15 juil. 2020, 06:00
AVO reported that small earthquakes in an area about 10 km E of the Makushin's summit and at a depth of about 8 km continued to be detected during 15-21 July. Since the onset of seismicity on 15 June, the earthquakes had generally decreased in both size and rate. No surficial activity was visible in satellite or webcam images; only typical minor steaming from the summit crater lake. ... Read all
mer., 1 juil. 2020, 06:18
Makushin volcano today (image: AVO)
The Alaska Volcano Observatory (AVO) reported that the seismicity continues at fluctuating levels since 24 June. This is associated with two earthquakes on 28 June with magnitude M 3.0 and 3.8 at 16:53 and 18:02 local time. All of the earthquakes are clustered about 10 km (6 miles) east of the summit of the volcano at a depth of about 8 km (5 miles). The largest earthquakes have been felt strongly by residents of Unalaska. ... Read all
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