Kamchatkan and Northern Kuriles Volcanic
Activity
KVERT INFORMATION RELEASE 14-08
Thursday, April 03, 2008,
22:30 UTC (Friday, April 04, 10:30 KST)
SUMMARY OF LEVEL OF CONCERN COLOR
CODES:
KAMCHATKA:
SHEVELUCH and
KARYMSKY: ORANGE
BEZYMIANNY: YELLOW
KLYUCHEVSKOY, TOLBACHIK PLOSKY, KIZIMEN,
AVACHINSKY, KORYAKSKY, GORELY and MUTNOVSKY: GREEN
NORTHERN KURILES:
CHIKURACHKI,
EBEKO and ALAID: GREEN
SHEVELUCH VOLCANO: 56œ38'N, 161œ19'E;
Elevation 3,283 m, the dome elevation ~2,500 m.
CURRENT LEVEL OF CONCERN
COLOR CODE IS ORANGE
Activity of the volcano continues 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 slightly above background level last
week: a large number of weak seismic events and a weak volcanic tremor were
registering all week. Seismic activity indicates that a growth of the lava dome
continues and probably hot avalanches occur each day. According to visual and
video data, a moderate fumarolic activity of the dome was observed on March
28-29 and April 01-03. Clouds obscured the volcano in the other days. According
to satellite data, a thermal anomaly was registered over the lava dome all
week.
KARYMSKY VOLCANO: 54œ03'N,
159œ27'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 could occur at any time. The explosive
activity of the volcano could affect low-flying aircraft in the vicinity of
the volcano.
Seismic activity was above background levels on
March 28-29 and slightly above background levels in the other days of the
week. Weak local shallow earthquakes occurred at the area of the volcano all
week. According to seismic data, ash plumes up to 2.5 km (8,000 ft) ASL
possibly occurred at the volcano on April 02, and possible weak ash-gas
explosions or hot avalanches - all week. According to visual data by pilots, ash
plumes rose up to 5.0-7.0 km (16,000-22,400 ft) ASL on March
28-29. According
to satellite data, a big thermal anomaly was registering over the volcano on
March 28 and April 01-03. All week ash deposits were noting from the volcano:
about 20 km (12 mi) to the east, ~ 70 km (43 mi) to the south-west, ~ 45-50 km
(31 mi) to the south. An ash plume extended ~ 110 km (68 mi) to the south on
April 03.
BEZYMIANNY VOLCANO: 55œ58'N, 160œ36'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 at the lava dome. Sudden ash emission related to this activity
could affect low-flying aircraft in the vicinity of the
volcano.
Seismic activity was at background levels on March
30-31, and didn`t exceed background levels in the other days. According to
visual and video data, a moderate fumarolic activity was noted on the lava
dome on March 28-29, April 01-03. Clouds obscured the volcano in the other days.
According to satellite data, a weak thermal anomaly over the lava dome was
observing all week.
IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:
Svetlana Toloknova, KVERT, KB GS RAS
E-mail: ssl@emsd.iks.ru
Tel. (41522) 59523
Christina Neal, Scientist-in-Charge, AVO
E-mail:
tneal@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 Kuriles Volcanoes.