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Asosan volcano (Kyushu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 17 November-23 November 2021 (New Activity / Unrest)

Mi, 17. Nov 2021, 06:00
06:00 AM | VON: VN
JMA lowered the Alert Level for Asosan to 2 (on a scale of 1-5) at 1100 on 18 November and decreased the restricted area to a radius of 1 km, noting that no eruptions had been recorded since the 21 October eruption. The sulfur dioxide emission rate remained elevated in November and was 2,100 tons per day on 16 November. The amplitudes of volcanic microtremors fluctuated for a period after the eruption, though they were generally small beginning on 1 November.

Source: Japan Meteorological Agency (JMA)
From: Global Volcanism Program, 2021. Report on Asosan. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 17 November-23 November 2021. Smithsonian Institution and US Geological Survey.

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