Kamchatkan and Northern Kurile Volcanic
Activity
INFORMATION RELEASE 16-06
Friday, April 21, 2006, 11:00 KDT
(22:00 UTC on April 20)
SUMMARY OF LEVEL OF CONCERN COLOR
CODES:
KAMCHATKA:
KARYMSKY: ORANGE
SHEVELUCH and BEZYMIANNY: YELLOW
KLYUCHEVSKOY, TOLBACHIK PLOSKY, KIZIMEN,
AVACHINSKY, KORYAKSKY, MUTNOVSKY and GORELY: GREEN
NORTHERN KURILE:
EBEKO, CHIKURACHKI and
ALAID: GREEN
KARYMSKY
VOLCANO: 54o03'N, 159o27'E; Elevation 1,486 m.
CURRENT LEVEL OF CONCERN COLOR
CODE: ORANGE
Seismic
data and satellite observations indicated that the eruption of the volcano with
ash explosions from the summit crater continues. Ash explosions up to 6 km (or
19,700 ft.) ASL are possible.
Intermittent eruptive activity at the
volcano continues. According to seismic data, ash plumes rose up to 4.2 km
(13,800 ft) ASL this week. Big thermal anomaly over the volcanic crater was
noted during the periods of visibility of the volcano. Numerous ash plumes and
ash deposits extending for about 75-135 km (46-84 mi) to the east and south-east
from the volcano were observed on satellite images. The activity of the volcano
could affect low-flying aircraft in the vicinity of the
volcano.
SHEVELUCH VOLCANO: 56o38'N,
161o19'E; Elevation 3,283 m, the dome elevation ~2,500 m.
CURRENT LEVEL OF
CONCERN COLOR CODE: YELLOW
Growth of the lava dome continues. A
fumarolic activity and thermal anomaly were observed during the periods of
visibility of the volcano. Seismic activity did not exceed background levels
last week but ash explosions up to 6 km (19,700 ft.) ASL could occur at any
time.
BEZYMIANNY VOLCANO: 55o58'N, 160o36'E;
Elevation 2,895 m
CURRENT LEVEL OF CONCERN COLOR CODE: YELLOW
Growth of the lava dome continues. A
lava block is extruding at the dome summit. A preparation of new explosive
eruption occurs.
Seismic activity was above background levels on April
15-16 and 18 and at background levels in the other days. Fumarolic activity and
thermal anomaly at the lava dome were noted during the periods of visibility of
the volcano. A size of thermal anomaly began to increase.
IF YOU HAVE ANY
QUESTIONS OR CONCERNS, PLEASE CONTACT:
Olga
Girina, KVERT, IVS FED RAS
E-mail: girina@kscnet.ruTel. (41522)
58627
Svetlana Droznina, 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 Service(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.ivs.kscnet/ivs/kvert/index.htmlArchive of daily information KB GS RAS: ftp://emsd.iks.ru/pub/DATA/RTS/Volcanoes