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Makushin volcano (Fox Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 15 July-21 July 2020 (New Activity / Unrest)

mer., 15 juil. 2020, 06:00
06:00 AM | AUTEUR : VN
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.
Weakly elevated surface temperatures were identified in satellite data during 20-21 July. The Aviation Color Code and Volcano Alert Level remained at Yellow and Advisory, respectively.

Source: US Geological Survey Alaska Volcano Observatory (AVO)
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From: Global Volcanism Program, 2020. Report on Makushin. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 15 July-21 July 2020. Smithsonian Institution and US Geological Survey.

Actualités précédentes

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
mer., 24 juin 2020, 06:00
AVO reported continuing numerous smaller earthquakes in an area about 10 km E of the Makushin's summit at a depth of about 8 km during 24-30 June; the frequency and magnitude had been declining since 15 June but the rate became variable on 24 June. No surficial activity was visible in satellite or webcam images; only typical minor steaming from summit crater lake. Earthquakes with a M 3 and M 3.8 were recorded at 1653 and 1802 on 28 June, with the larger event strongly felt in Unalaska (14 km E). ... Read all
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