JMA reported that incandescence from Minamidake crater (at Aira Caldera?s Sakurajima volcano) was occasionally visible at night during 7-15 October.
There were 13 explosions detected by the seismic network and nine non-explosive eruptive events.
Eruption plumes rose 2.3-2.7 km above the crater rim and large blocks were ejected as far as 1.7 km away.
The sulfur dioxide emission rate was high, at 2,100 tons/day, on 11 October.
The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)