BEZYMIANNY- Reports of minimal seismic activity along with gas and steam activity has been observed within the past week. The Tokyo VAAC has also reported a significant ash plume on the 4th of February that rose to 4.6 km in height.
KARYMSKY- Some seismic activity has been reported in recent days, and some ash plumes may have risen to 4.7km in height and drifted approximately 120 km East.
KIZIMEN- High seismic activity from this volcano, but variable within the last week. Ash plumes rose to 6.1 km in height and drifted 430 km East. A second ash plume was reported on the 8th of February that reached a height of 4km.
SHIVELUCH- A moderate amount of seismic activity has been reported recently, with frequent volcanic earthquakes and gas and steam activity has been observed. Ash plumes reported recently rose to heights of around 6 to 8 km and drifted 120km northeast. A second ash plume was noted as rising to 4km in height and drifting Eastward on the 8th of February
Sources: http://www.volcano.si.edu/reports/usgs/
http://www.ssd.noaa.gov/VAAC/OTH/JP/messages.html
James Hupp 2/15/2011
