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, a lot of shallow volcanic earthquakes and volcanic tremor were registered. According to seismic data, probably ash plumes up to 6.0 km (19,685 ft) ASL occurred at the volcano all week. According to visual and video data, ash explosions up to 5.0 km (16,400 ft) on February 17-18 and gas-steam plumes up to 5.5 km (18,044 ft) on February 16-19 were observed. According to satellite data, gas-steam containing ash plumes extended about 250 km (155 mi) to the south, north-west and north from the volcano on February 16-19. A big thermal anomaly was noted on February 16-19 and 21. Volcano was obscured by clouds on the other days.

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

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

Seismicity was above background levels last week: volcanic earthquakes and a volcanic tremor were registered all week. According to video data and visual observations, a gas-steam plume, possibly, containing small amount of ash rose up to 5.3 km (17,400 ft) ASL and extended to the east on February 16-18. A thermal anomaly was noted on February 16-19 and 21. Volcano was obscured by clouds on the other days.

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 100-180 per day and possibly, ash explosions up to 3.0 km (9,850 ft) occurred this week. According to satellite data, a thermal anomaly over the volcano was noted on February 16-19. Volcano was obscured by clouds 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. 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 3.6 km (11,800) ASL and extended to the northern directions on February 16-18. According to satellite data, a thermal anomaly over the lava dome was noted on February 16-19. Volcano was obscured by clouds on the other days.

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