Kamchatkan and Northern Kurile Volcanic
Activity
KVERT INFORMATION RELEASE 05-07
Friday, February 02, 2007, 10:50
KST (22:50 UTC on February 01)
SUMMARY OF LEVEL OF CONCERN COLOR
CODES:
KAMCHATKA:
KARYMSKY and SHEVELUCH: ORANGE
KLYUCHEVSKOY and BEZYMIANNY:
YELLOW
TOLBACHIK PLOSKY, KIZIMEN, AVACHINSKY, KORYAKSKY,
MUTNOVSKY and GORELY: GREEN
NORTHERN KURILE:
EBEKO, CHIKURACHKI and
ALAID: GREEN
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. 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
slightly above background levels last week, over 140 volcanic earthquakes and
volcanic tremor were registered. According to seismic data, probably ash plumes
up to 3.5-4.5 km (11,500-14,800 ft) ASL occurred at the volcano all week.
According to visual and video data, gas-steam plumes containing ash rose up to
4.5 km (14,800 ft) all week. According to satellite data, gas-steam plumes
containing ash extended > 400 km (248 mi) to the east-southeast from the
volcano last weak. A big thermal anomaly was noting all week. A hot lava
extrudes at the top of the dome.
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
250-300 per day. Possibly, ash explosions up to 3.0 km (9,900 ft) ASL occurred
last week. According to the data from AMC Yelizovo, a gas-steam plume raising up
to 100 m from the volcanic crater was observed by pilots of local airlines at
23:25 UTC on January 31. According to satellite data, a thermal anomaly over the
volcano was noted on December 27 and 31.
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 was at
background levels on January 27 and 31, and did not exceed background levels in
the other days. According to visual and video data, gas-steam plumes rose up to
3.5 km (11,500) ASL and extended to the eastern directions all week. According
to satellite data, a thermal anomaly over the lava dome was noted all
week.
KLYUCHEVSKOY VOLCANO; 56°03'N, 160°39'E;
Elevation 4,750 m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW
Seismic activity of the volcano
continues. The activity of the summit volcanic crater, possibly, could affect
international and low-flying aircraft.
Seismicity was at background
levels during the week. About 50 weak seismic events into the volcanic edifice
were registered last weak. A weak volcanic tremor is registering on February 01,
from 18:17 UTC till present. According to visual observations, a weak fumarolic
activity of the volcano was noted this week.
IF YOU HAVE ANY QUESTIONS OR
CONCERNS, PLEASE CONTACT:
Olga Girina, KVERT, IVS FED RAS
E-mail:
girina@kscnet.ruTel. (41522) 58627
Sergey Senyukov,
KVERT, KB GS RAS
E-mail: ssl@emsd.iks.ruTel. (41522) 59523
Tom Murray,
Scientist-in-Charge, AVO
E-mail: tlmurray@usgs.govTel. 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.htmlArchive of daily information KB GS RAS: ftp://emsd.iks.ru/pub/DATA/RTS/VolcanoesKVERT Information Releases at the web-page of AVO
(Alaska Volcano Observatory): http://www.avo.alaska.edu/activity/avoreport.php?view=kaminfo