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Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 6 April-12 April 2022 (Continuing Activity)

Do, 14. Apr 2022, 00:06
00:06 AM | VON: VN
AVO reported that low-level eruptive activity at Semisopochnoi's North Cerberus cone continued during 6-12 April. Periods of seismic tremor were detected daily and occasional small explosions were recorded on most days in seismic and regional infrasound data. Partly-to-mostly-cloudy webcam views and occasional satellite images showed daily short-lived ash bursts and more continuous steam emissions.
Steam plumes drifted as far as 70 km SW during 6-7 April. A low-level steam plume drifted more than 100 km at altitudes less than 1.5 km (5,000 ft) a.s.l. during 7-8 April.
A low-level ash plume drifted up to 80 km WNW on 8 April. Local ash deposits were occasionally visible. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.

Source: US Geological Survey Alaska Volcano Observatory (AVO)
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From: Global Volcanism Program, 2022. Report on Semisopochnoi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 6 April-12 April 2022. Smithsonian Institution and US Geological Survey.

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Mi, 6. Apr 2022, 20:07

Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 30 March-5 April 2022 (Continuing Activity)

AVO reported that low-level eruptive activity at Semisopochnoi's North Cerberus cone continued during 30 March-4 April. Periods of seismic tremor and occasional small explosions were detected daily in seismic and regional infrasound data. Daily minor ash emissions rose no higher than 3 km (10,000 ft) a.s.l. and occasional steam emissions were visible in webcam and satellite images; clouds sometimes prevented satellite views. ... Read all
Mi, 30. Mär 2022, 19:56

Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 23 March-29 March 2022 (Continuing Activity)

AVO reported that low-level eruptive activity at Semisopochnoi's North Cerberus cone continued during 22-29 March. Periods of seismic tremor and occasional small explosions were detected daily in seismic and regional infrasound data. Daily minor ash emissions and occasional steam emissions were visible in webcam and satellite images; clouds sometimes prevented satellite views. ... Read all
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Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Aktueller Status: Schwache Aktivität oder Ausbruchswarnung (3 von 5) Ausbrüche des Semisopochnoi:
2021, 2020, 2019, 2018, 1987
Typische Aktivität
unspecified
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