Asosan volcano (Kyushu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 22 March-28 March 2023 (Continuing Activity)
Ср, 29 мар 2023, 14:00 14:00 PM | АВТОР: VN
The amplitude of volcanic tremor signals at Asosan increased in December 2022, and then further intensified on 30 January, prompting JMA to raise the Alert Level to 2 (on a scale of 1-5) and warn the public to stay at least 1 km away from the crater. The amplitude fluctuated at high levels for a few weeks, and then decreased on 19 February and again on 14 March. Daily sulfur dioxide emissions had exceeded 1,000 tons per day starting in December 2022; emissions declined to below that threshold by mid-January and remained at lower levels.At 1100 on 23 March the Alert Level was lowered to 1.
Source: Japan Meteorological Agency (JMA)
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From: Global Volcanism Program, 2023. Report on Asosan. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 22 March-28 March 2023. Smithsonian Institution and US Geological Survey.
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