Kamchatkan
and Northern Kuriles Volcanic Activity
KVERT INFORMATION RELEASE
41-09
Thursday, July 30, 2009, 20:30 UTC (Friday, July 31, 10:30
KDT)
SUMMARY OF LEVEL OF CONCERN COLOR
CODES:
KAMCHATKA:
SHEVELUCH: ORANGE
KIZIMEN, KORYAKSKY,
BEZYMIANNY and KARYMSKY: YELLOW
KLYUCHEVSKOY, TOLBACHIK PLOSKY, AVACHINSKY, GORELY and MUTNOVSKY: GREEN
NORTHERN KURILES:
EBEKO:
GREEN
CHIKURACHKI and
ALAID: GREEN
CURRENT CHANGES
IN COLOR CODE:
KIZIMEN IS NOW AT LEVEL OF CONCERN COLOR CODE YELLOW
EBEKO IS NOW AT LEVEL OF CONCERN COLOR
CODE GREEN
KIZIMEN
VOLCANO: 55°12'N, 160°32'E; Elevation 2,485 m
CURRENT LEVEL OF CONCERN COLOR
CODE IS YELLOW
Seismic
activity of the volcano increased since July 11. Shallow earthquakes were
registered during three weeks. Strong explosive eruption possible in case of
further seismicity increasing.
Seismicity was above background levels,
several tens of shallow earthquakes per day were registered.
Kizimen is a
conical stratovolcano with a small lava dome at the summit. Last explosive
eruption was on 1928-1929 (VEI 2). Volcano is located on the western slope of
the southern part of Tumrok ridge in 265 km (166 mi) to the north-east from
Petropavlovsk-Kamchatsky.
http://www.ivs.kscnet.ru/ivs/kvert/volcanoes/Kizimen/index_eng.html
EBEKO VOLCANO, Paramushir Island, Northern Kurily: 50°41'N,
156°01'E; Elevation 1,156 m
CURRENT LEVEL OF CONCERN COLOR CODE IS GREEN
PREVIOUS LEVEL OF CONCERN COLOR CODE
IS YELLOW
Activity of the
volcano remains low since July 13. There were no significant ash or gas plumes
during several weeks.
According to satellite monitoring, a thermal
anomaly and ash plumes were not registered.
Ebeko volcano is not
monitored with seismic instruments. KVERT uses satellite monitoring and receives
occasional visual observations from Paramushir Island.
http://www.kscnet.ru/ivs/kvert/current/ebk/index.html
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: a new viscous lava flow effuses at the lava dome. Ash
explosions >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. According to seismic
data, possibly ash plumes rose up to 6.5 km (21,300 ft) ASL, and gas-steam
plumes with some ash occurred at the volcano this week. According to video data,
ash plumes rose up to 5 km (16,400 ft) ASL on July 23, 27; gas-steam plumes up
to 2.7 km (8,900 ft) ASL occurred on July 24, 27. According to satellite data, a
big thermal anomaly was registered over the lava dome all week.
http://www.kscnet.ru/ivs/kvert/current/shv/index.html
KARYMSKY VOLCANO: 54°03'N, 159°27'E; Elevation 1,486
m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW
Activity of the volcano
continues and a possibility of ash explosions up to 6.0 km (or 19,700 ft) ASL
remains. The explosive activity of the volcano could affect low-flying
aircraft.
Seismicity was at background levels on July 27-28, there was no
seismic data during other days. According to satellite data, a thermal anomaly
was registered on July 28-29.
http://www.kscnet.ru/ivs/kvert/current/krm/index.html
KORYAKSKY VOLCANO; 53°19'N, 158°43'E; Elevation 3,456
m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW
A gas-steam activity of the
volcano continues and aerosol plumes could affect low-flying
aircraft.
Seismicity was at background levels. Weak shallow earthquakes
were registered during this week. According to visual data, moderate fumarolic
activity of the volcano was observed. According to satellite data, a thermal
anomaly was not registered.
http://www.kscnet.ru/ivs/kvert/current/krk/index.html
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. Sudden ash emission related to this activity could affect low-flying
aircraft in the vicinity of the volcano.
Seismicity didn't exceeded
background levels all week. According to visual data, weak fumarolic activity
was observed on July 26. According to satellite data, a thermal anomaly was
registered on July 28-29.
http://www.kscnet.ru/ivs/kvert/current/bzm/index.html
IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE
CONTACT:
Alexander Manevich, KVERT, IVS FED RAS
E-mail: mag@kscnet.ru
Tel. (41522)
58325
Tat`yana Kozhevnikova, 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