Kamchatkan and Northern Kuriles Volcanic Activity
KVERT INFORMATION RELEASE 30-07
Saturday, June 30, 2007, 01:15 UTC (14:15 KDT)

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

The strong explosive-effusive eruption of the volcano continues. Ash explosions more than 10 km (32,000 ft.) ASL could occur at any time and could affect international and low-flying aircraft.

Seismic activity of Kluchevskoy was at the medium level (less than 4-7x10-6 mps) at 00:00 UTC on June 29 and remains at this level to present time, 01:00 UTC on June 30. According to visual and video data, continuous ash emission to more than 10 km (or 32,000 ft) and extended to the west began to observed from 21:06 UTC on June 29 till present time. According to satellite data, ash plumes extended for 300 km (187 mi) to the east from Klyuchevskoy volcano. Approximate plume altitude: 9000 m (29,500 ft) ASL (by atmospheric profile).
Based on past eruptions, this could continue for some hours or days probably. According to the puff prediction for potential eruption at Kluchevskoy a plume for about 10 km (or 32000 ft) will move to south-west from volcano. According to view from MTSAT the plume is moving to east and west for last 6 hours.
All local aviation authorities have urgent information from KVERT.


Strong terminal paroxysmal eruptions of the volcano occurred in 1945 (lasting for 1 month), 1984-1985 (18 months), 1987 (2), 1990 (7), 1994 (< 1), 1998 (8) and 2005 (3). Ash plumes during these eruptions rose up to 7.0-8.0 km (23,000-26,200 ft) ASL but were briefly as high as 10.0-13.0 km (33,000-42,600 ft) ASL.


IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:

Sergey Ushakov, KVERT, IVS FED RAS
E-mail: ushakov@kcsnet.ru
Tel. (41522) 58627

Tat'yana Kozhevnikova, 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 Kuriles 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