Seismicity was above background levels all week. According to seismic data, probably ash plumes up to 5.3 km (17,400 ft) ASL occurred at the volcano. Weak gas-steam activity was noted on January 30 - February 1. According to satellite data, a big thermal anomaly was registered over the lava dome on January 29 - February 2, and February 5. Clouds obscured the volcano on the other days.

KARYMSKY VOLCANO: 54°03'N, 159°27'E; Elevation 1,486 m
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE

Explosive activity of the volcano continues and ash explosions up to 6.0 km (or 19,700 ft.) ASL are possible. The explosive activity of the volcano could affect low-flying aircraft in the vicinity of the volcano.

Seismic activity of the volcano was above background levels on February 1-4 and at the background levels during other days. According to satellite data, weak thermal anomaly was registering over the volcano on January 30. Clouds obscured the volcano on the other days.

KLYUCHEVSKOY VOLCANO; 56° 03'N, 160° 39'E; Elevation 4,750 m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW

Moderate fumarolic activity of the volcano continues. Gas-steam and aerosolic plumes from the volcano could affect low-flying aircraft.

Seismic activity was above background levels on January 30-31 and at the background levels during other days. Weak continuous spasmodic volcanic tremor was registering with peak amplitudes on January 30-31. According to visual data, weak gas-steam plumes was observed at the volcano on January 30 - February 1. According to satellite data, weak thermal anomaly over the volcano was noting on January 30 - February 1, February 5; gas-steam plume extended 20 km (18 mi) to the north-east from the volcano was noted on January 31.

KORYAKSKY VOLCANO; 53°19'N, 158°43'E; Elevation 3,456 m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW

Moderate fumarolic activity of the volcano continues. Gas-steam and aerosolic plumes from the volcano could affect low-flying aircraft.

Seismic activity of the volcano was at background levels all week. Weak shallow earthquakes were registering during this week. According to visual data, weak fumarolic activity was registering on January 30 - February 1. According to satellite data, weak thermal anomaly was noted on January 31. Clouds obscured the volcano on the other days.

BEZYMIANNY VOLCANO: 55°58'N, 160°36'E; Elevation 2,895 m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW

Growth of the lava dome continues. Sudden ash emission related to this activity could affect low-flying aircraft in the vicinity of the volcano.

Seismic activity of the volcano did not exceeded background levels during this week. A moderate fumarolic activity of the volcano was observed on January 31- February 1. According to satellite data, a weak thermal anomaly was registering over the volcano on January 30 - February 1. Clouds obscured the volcano on the other days.

IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:

Sergey Ushakov, KVERT, IVS FED RAS
E-mail: ushakov@kscnet.ru
Tel. (41522) 58325

Svetlana Toloknova, KVERT, KB GS RAS
E-mail: ssl@emsd.ru
Tel. (41522) 59523

Dr. Tom Murray, Scientist-in-Charge, USGS
E-mail: tlmurray@usgs.gov
Tel. 907-786-7497

The Kamchatkan Volcanic Eruption Response Team (KVERT) is a non-commercial cooperative program of the Alaska Volcano Observatory (AVO, USA), the Institute of Volcanology and Seismology (IVS) FED RAS and the Kamchatkan Branch of Geophysical Survey (KB GS) RAS (Russia). KVERT staff is available in the office from 8:30 AM till 6:00 PM (KST or KDT) and by phone during the evenings. KVERT uses daily satellite imagery, information from remote scientific observation stations, real-time seismic data for 10 volcanoes, and other information to monitor activity at Kamchatkan and Northern Kuriles Volcanoes.

The official web-page of KVERT (the Institute of Volcanology and Seismology FED RAS): http://www.kscnet.ru/ivs/kvert/index_eng.php
Archive of daily information KB GS RAS: ftp://emsd.iks.ru/pub/DATA/RTS/Volcanoes
KVERT Information Releases at the web-page of AVO (Alaska Volcano observatory): http://www.avo.alaska.edu/activity/avoreport.php?view=kaminfo