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Semisopochnoi volcano (Aleutian Islands): alert level lowered to Yellow

ven., 8 juil. 2022, 18:42
18:42 PM | AUTEUR : MARTIN
Degassing from Semisopochnoi volcano yesterday (image: AVO)
Degassing from Semisopochnoi volcano yesterday (image: AVO)
The Alaska Volcano Observatory (AVO) reduced The Aviation Color Code and Volcano Alert Level to "yellow/advisory", as no ash emissions or explosive eruption at the volcano have been registered since 12 June.
The seismic activity continues at low levels.
Emissions of steam and gas continue with only venting from the north crater of Mount Cerberus.
Source: Alaska Volcano Observatory volcano activity update 8 July 2022

Actualités précédentes

mer., 6 juil. 2022, 14:00

Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 29 June-5 July 2022 (Continuing Activity)

AVO reported that low-level eruptive activity at Semisopochnoi's North Cerberus cone likely continued during 29 June-5 July. Seismicity was quiet. Weather clouds often prevented satellite and webcam views; sulfur dioxide emissions were detected in satellite images on 28 and 30 June. ... Read all
mer., 29 juin 2022, 14:00

Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 22 June-28 June 2022 (Continuing Activity)

AVO reported that low-level eruptive activity at Semisopochnoi's North Cerberus cone continued during 21-27 June. Periods of low-amplitude tremor and a few small low-frequency earthquakes were recorded by the seismic network. Weather clouds often prevented satellite and webcam views; sulfur dioxide emissions were detected in satellite images during 23-24 June and a robust steam plume was visible in webcam images during 25-26 June. ... Read all
Montrer plus
Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Condition actuelle: Activité petite ou avertissement éruption imminente (3 sur 5) Eruptions du volcan Semisopochnoi:
2021, 2020, 2019, 2018, 1987
Style éruptif tipique
unspecified
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