Kamchatkan and Northern Kuriles
Volcanic Activity
KVERT INFORMATION RELEASE 39-07
Friday, August 16,
2007, 21:40 UTC (August 17, 10:40 KDT)
SUMMARY OF LEVEL OF
CONCERN COLOR CODES:
KAMCHATKA:
SHEVELUCH and
KARYMSKY: ORANGE
BEZYMIANNY
: YELLOW
KLYUCHEVSKOY,
TOLBACHIK PLOSKY, KIZIMEN, AVACHINSKY, KORYAKSKY, MUTNOVSKY and
GORELY: GREEN
NORTHERN
KURILES:
CHIKURACHKI, EBEKO and ALAID: GREEN
CURRENT
CHANGES IN COLOR CODE:
KLYUCHEVSKOY IS NOW AT LEVEL OF CONCERN COLOR
CODE GREEN
KLYUCHEVSKOY VOLCANO;
56œ03'N, 160œ39'E; Elevation 4,750 m
CURRENT LEVEL OF CONCERN COLOR CODE
IS GREEN
PREVIOUS LEVEL OF
CONCERN COLOR CODE IS YELLOW
Activity
of Klyuchevskoy has decreased and KVERT is now assigning level of concern color
code GREEN to the volcano: seismic activity was at background levels during the
past five weeks, and ash plumes were not noted for the last four
weeks.
Seismic activity was at background levels last week, weak
continuous spasmodic volcanic tremor and a few weak shallow earthquakes
were registered. According to video and visual data, no activity was observed on
August 11 and the volcano was obscured by clouds on the other days. According to
satellite data, thermal anomaly was noted on August
11.
SHEVELUCH VOLCANO: 56œ38'N, 161œ19'E; Elevation 3,283
m, the dome elevation ~2,500 m.
CURRENT LEVEL OF CONCERN COLOR CODE IS
ORANGE
Growth
of the lava dome 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
low-flying aircraft.
Seismic activity was above background levels. Many
shallow volcanic earthquakes and intermittent volcanic tremor were registered.
According to seismic data, ash plumes up to 10 km (32800 ft) ASL and
avalanches occurred at the volcano last week. According to visual data from
Kluchi, intensive growth of the eastern part of the lava dome,
incandescence of the dome and hot avalanches were noted on August 11-12. Two
avalanches, accompanied with ash plumes up to 4.5 km (14800 ft) ASL extending to
the north-west, were observed on August 14, clouds obscured the volcano in other
days. According to satellite data, a big thermal anomaly was noted all week,
diffused ash plume extended about 90 km (56 mi) to the south-east on August
11.
KARYMSKY VOLCANO: 54œ03'N, 159œ27'E; Elevation 1,486
m.
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE
The
eruption of the volcano continues. Ash explosions up to 6 km (or 19,700 ft.) ASL
are possible at any time. The activity of the volcano could affect low-flying
aircraft in the vicinity of the volcano.
Seismic activity was above
background levels all week, 350-600 shallow volcanic earthquakes and a spasmodic
volcanic tremor were registered at volcano all days. According to seismic data,
possibly ash explosions rose up to 3.0 km (9,850 ft) ASL . According to
satellite data, the volcano was obscured by clouds all
week.
BEZYMIANNY VOLCANO: 55œ58'N, 160œ36'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 slightly
above background levels on August 09-10 and 12-13 and did not exceed level
of registration on the other days. Several shallow volcanic earthquakes were
registered during the week. According to satellite data a thermal anomaly was
noted on August 11, clouds obscured the volcano on the other days.
IF YOU
HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:
Nataliya
Malik, KVERT, IVS FED RAS
E-mail: malik@kscnet.ruTel. (41522) 58627
9622826547
Irina Nuzhdina, 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 Kuriles
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