NORTHERN KURILE:
EBEKO, CHIKURACHKI and ALAID: GREEN

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

Moderate explosive eruption of the volcano occur. The activity of the volcano could affect international and low-flying aircraft.

Seismicity was above background levels last week. A volcanic tremor was registered all week. According to video data and visual observations, a gas-steam plume containing small amount of ash rose up to 5.3 km (17,400 ft) ASL and extended to the south-west on February 15. Series of ash explosions and strombolian activity were noted from 05:40 UTC this day. A thermal anomaly was noting all week.

SHEVELUCH VOLCANO: 56°38'N, 161°19'E; Elevation 3,283 m, the dome elevation ~2,500 m.
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE

Growth of the lava dome continues. A hot lava extrudes at the top of the dome. Ash explosions up to 10 km (32,800 ft.) ASL could occur at any time. The activity of the volcano could affect international and local aircraft.

Seismic activity was above background levels last week, over 180 volcanic earthquakes and volcanic tremor were registered. According to seismic data, probably ash plumes up to 5.5 km (18,050 ft) ASL occurred at the volcano all week. According to visual and video and satellite data, gas-steam plumes containing ash rose up to 6.0 km (19,700 ft) and extended about 160 km (99.2 mi) to the west and south-west from the volcano on February 12-13 and 15. A big thermal anomaly was noting all week.

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

An eruption of the volcano continues. Ash explosions up to 6 km (or 19,700 ft.) ASL are possible. The activity of the volcano could affect low-flying aircraft in the vicinity of the volcano.

Seismic activity was above background levels last week. According to seismic data, a number of weak local shallow earthquakes was 50-200 per day and possibly, weak ash explosions occurred this week. According to satellite data, a thermal anomaly over the volcano was noted on February 12-15.

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. The activity of the volcano could affect low-flying aircraft in the vicinity of the volcano.

Seismic activity did not exceed background levels all week. According to visual and video data, gas-steam plumes rose up to 3.5 km (9,843) ASL and extended to the north-east and south-west on February 10-11 and 14-15. According to satellite data, a thermal anomaly over the lava dome was noted on February 11-15.

IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:

Olga Girina, KVERT, IVS FED RAS
E-mail: girina@kscnet.ru
Tel. (41522) 58627

Sergey Senyukov, KVERT, KB GS RAS
E-mail: ssl@emsd.iks.ru
Tel. (41522) 59523

Tom Murray, Scientist-in-Charge, AVO
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 Kurile Volcanoes.

The official web-page of KVERT (the Institute of Volcanology and Seismology FED RAS): http://www.kscnet.ru/ivs/kvert/index.html
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