Kamchatkan and Northern Kuriles Volcanic Activity
KVERT INFORMATION RELEASE 47-08
Thursday, October 09, 2008, 21:30 UTC (Friday, October 10, 10:30 KDT)

SUMMARY OF LEVEL OF CONCERN COLOR CODES:

KAMCHATKA:
KLYUCHEVSKOY, SHEVELUCH and KARYMSKY : ORANGE
BEZYMIANNY : YELLOW
TOLBACHIK PLOSKY, KIZIMEN, AVACHINSKY, KORYAKSKY, MUTNOVSKY and GORELY: GREEN

NORTHERN KURILES:
CHIKURACHKI, EBEKO and ALAID: GREEN

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

Strombolian activity of the volcano was registered on October 08 - a moderate explosive eruption began. Possibly the volcanic crater is packed with lava, and lava could effuse to a volcanic slope in the near future. Moreover, an explosive process could increase at any time. The activity of the volcano could affect international and low-flying aircraft.

Seismic activity of the volcano was above background levels all week: a lot of volcanic earthquakes and volcanic tremor were registered at the volcano all week. According to visual data from Klyuchi, an incandesce at the crater was observing in the dark time on August 27 and September 24. A moderate fumarolic activity of the volcano was noting on October 02-06 and 08-09, clouds obscured the volcano in the other days. According to satellite data, a thermal anomaly was registered over the volcano 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

Activity of the volcano continues (the lava flow is effusing on the south-western flank of the lava dome) and ash explosions up to 10 km (32,800 ft.) ASL could occur at any time. The activity of the volcano could affect international and low-flying aircraft.

Seismicity was above background levels all week: volcanic earthquakes and a weak volcanic tremor were registered at the volcano all week. According to seismic data, a great number of hot avalanches occurred at the lava dome all week. These avalanches generated ash plumes that rose up to 4 km (13,100 ft) ASL. A moderate and strong fumarolic activity with gas-steam columns of an altitude of ~ 4.5 km (~ 14,800 ft) ASL was observed on web-camera on October 02-05 and 07-09. Clouds obscured the volcano in the other days of the week. According to satellite data, a thermal anomaly was registered over the lava dome all week; gas-steam plumes containing small amount of ash extended about 30 km (19 mi) to the north and east from the volcano on October 06-07.

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

Activity of the volcano continues and ash explosions up to 6 km (or 19,700 ft.) ASL are possible. The explosive activity of the volcano could affect low-flying aircraft.

Seismic activity of the volcano was above background levels all week. According to seismic data, possibly ash-gas explosions up to 4.0 km (13,100 ft) ASL occurred at the volcano on October 04-09. According to satellite data, a thermal anomaly was registered over the volcano on October 03-04 and 08-09; clouds obscured the volcano on the other days of the week.

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 - a viscous lava flow is effusing to the south-southeast flank of the dome. 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 exceed background levels. A weak and moderate fumarolic activity of the volcano was observed on web-camera on October 05 and 09. Clouds obscured the volcano in the other days of the week. According to satellite data, a thermal anomaly was registered over the lava dome on October 03-04 and 06-09.


IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:

Dr. Olga Girina, KVERT, IVS FED RAS
E-mail: girina@kscnet.ru
Tel. (41522) 58325

Tatiana Kozevnikova, 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