Asamayama volcano (Honshu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 29 March-4 April 2023 (Continuing Activity)
Wed, 5 Apr 2023, 14:00 | BY: VN
JMA reported that inflation on Asamayama's W flank persisted during 29 March-4 April, and the number of shallow volcanic earthquakes continued to increase. There were 95 events on 29 March, 91 on 30 March, 94 on 31 March, 77 on 1 April, 68 on 2 April, 104 on 3 April, and 149 on 4 April. Sulfur dioxide measurements were 1,600 tons per day on 29 March, which had increased compared to the previous measurement of 100 tons per day on 17 March.On 3 April the sulfur dioxide concentration was 1,000 tons per day. The Alert Level remained at a 2 (on a scale of 1-5) and warned the public to be aware of large volcanic blocks and pyroclastic flows within 2 km of the crater.
Source: Japan Meteorological Agency (JMA)
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From: Global Volcanism Program, 2023. Report on Asamayama. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 29 March-4 April 2023. Smithsonian Institution and US Geological Survey.
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Wed, 29 Mar 2023, 14:00
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