Kikai volcano (Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 March-20 March 2018 (New Activity / Unrest)

JMA reported that one small-amplitude, short-duration volcanic tremor was detected on 16 March at Satsuma Iwo-jima, a subaerial part of Kikai's NW caldera rim. The number of volcanic earthquakes increased on 19 March, prompting JMA to raise the Alert Level to 2 (on a 5-level scale), and then decreased the next day. The report noted increased thermal activity since February, with occasional visual observations of incandescence.

Source: Japan Meteorological Agency (JMA)
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From: Global Volcanism Program, 2018. Report on Kikai. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 14 March-20 March 2018. Smithsonian Institution and US Geological Survey.