Makushin volcano (Fox Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 10 June-16 June 2020 (New Activity / Unrest)
AVO reported that over a period of several hours on 15 June there were two earthquakes in the vicinity of Makushin that were greater than M 4 and one greater than M 3. The events were located about 11 km SE of the summit at a depth of about 8 km, and felt in Unalaska (14 km E). Numerous smaller earthquakes were recorded, though not felt by Unalaska residents.
mer., 10 juin 2020, 06:0006:00 AM | AUTEUR : VN
AVO noted that the earthquakes represented a departure from background levels and were possibly indicative of volcanic unrest; the Aviation Color Code and Volcano Alert Level were respectively raised to Yellow and Advisory. The report noted that aftershocks were continuing.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
From: Global Volcanism Program, 2020. Report on Makushin. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 10 June-16 June 2020. Smithsonian Institution and US Geological Survey.
lun., 21 janv. 2013, 07:31
Occasional small local earthquakes have been recorded recently. ... Read all
mer., 30 mai 2001, 06:00
Makushin volcano (Fox Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 30 May-5 June 2001 (New Activity / Unrest)
Since July 2000 AVO has detected a slight increase in the number of small earthquakes beneath Makushin. The earthquakes generally ranged in depth between 0 and 8 km and were too small to be felt by humans (M0-1.5). The seismic activity was not considered to be an immediate precursor to eruptive activity. ... Read all