|
Kliuchevskoi is Kamchatka's highest and most active volcano. Since its
origin about 6000 years ago, the beautifully symmetrical, 4835-m-high
basaltic stratovolcano has produced frequent moderate-volume explosive
and effusive
eruptions without major periods of inactivity. Kliuchevskoi rises above
a saddle NE of sharp-peaked Kamen volcano
and lies SE of the broad Ushkovsky massif. More than 100 flank eruptions
have occurred at Kliuchevskoi during the
past roughly 3000 years, with most lateral craters and cones occurring
along radial fissures between the unconfined
NE-to-SE flanks of the conical volcano between 500 m and 3600 m elevation.
GVN
Monday,
November 30th, 2010
Based on information from the Yelizovo Airport (UHPP), the Tokyo VAAC
reported that on 25 November an ash plume rose to an altitude of 7.9
km (26,000 ft) a.s.l. and drifted E. Possible eruptions detected in
satellite imagery on 27 and 29 November produced plumes that rose to
altitudes of 5.8 km and 6.7 km (19,000 and 22,000 ft) a.s.l., respectively,
and drifted NE.
Friday,
October 29th, 2010
State of
Klyuchevskoy on October 23, 2010.
Photo by Yu. Demyanchuk
As well as Merapi and Sheveluch, the Kliuchevskoi-volcano
is just as active. Seismicity of the volcano was above
background levels all week. According to visual data, Strombolian activity
was observed all week.
Ash plumes rose up to 8-9 km (26,200-29,500 ft) ASL on October 22-25
and 27.
State of
Klyuchevskoy on October 17, 2010.
Photo by Yu. Demyanchuk
According to satellite data, two lava flows continues to effuse from
the terminal crater down the western and
south-western flanks of the volcano. A big bright thermal anomaly was
registered over the volcano all week.
Ash plumes extended > 2300 km (1426 mi) mainly to the east from the
volcano all week.
Tuesday,
March 29th, 2005
The nearest neighbor of Kliuchevskoi - the Sheveluch
volcano - is in the state of high activity.
In the past 24 hours the ash train stretched to a distance of over 200
km from Kliuchevskoi.
Several flows of lava with a temperature
of the order of 1,100 deg Celsius have been continually
flowing on the slopes of Kliuchevskoi (its height is 4,822 m). The dramatic
difference of
temperatures during the interaction of lava with snow and ice causes
high-yield phreatic
explosions (ruptures of the magma material) with release of ashes.
The ejections of volcanic bombs reach the height of 1,000 m.
Friday, March 25th, 2005
As of the 25th of March, the Kamchatka Volcano
Eruption Response Team (KVERT) reported
that on 24 March the Concern Color Code at Kliuchevskoi was raised to
Red (the highest level)
due to an increase in seismic and volcanic activity. According to visual
and video data,
a gas-and-steam plume containing some amounts of ash rose to ~7.5 km
(24,600 ft) a.s.l.
on 22 March and rose to ~ 8.5 km (27,800 ft) a.s.l. on 23 March, extending
to the NW.
There was ashfall in the town of Kluchi on 23 March.
Fredag, 11.mars 2005
On March 7th it is reported that the ash plume
from Eurasia's tallest Klyuchevskoi volcano in
Kamchatka (Russia's Far East) is now stretched for more than 70 kilometers,
according to
Volcanology and Seismology Institute of the Far Eastern department of
the Russian Academy
of Sciences. Volcanic bombs are hurled to a height of more than 800
meters.
Continuously rolling down the western slope of the volcano is a lava
flow with a temperature
of about 1,100 degrees. The extreme difference between temperatures
when the lava interacts
with the ice and snow causes the magmatic material to explode heavily
and produce lots of ash.
Eruptions from explosions rise as high as eight kilometers.
The cause of the growing intensity
of such explosions is the increased volume of lava over the
past two days. In this connection, the lava flow has broadened and is
claiming fresh portions
of the Erman glacier it has melted.
There is now a high probability
of massive mud flows rushing down the slopes of the volcano,
which usually have a frontage of up to 500 meters and pass east of the
village of Klyuchi,
situated 30 kilometers from the volcano's foothills.
Mud streams carrying at high speed
stone rocks up to three meters in diameter and tree trunks represent
a serious danger for people and equipment. The population has been warned
of the possible menace.
At the same time, the Sheveluch volcano
is also in eruption.
Novosti
Friday February 27th, 2004
11.januar
2004. Sheveluch had an eruption at the same
time, and Bezymianny few days later..
During 13-20 February seismicity
was above background levels at Kliuchevskoi, with
135 earthquakes of M 1.25-1.7 and 1-6 earthquakes up to M 1.85 occurring
daily at
depths of 3-6 km beneath the volcano. Gas-and-steam plumes rose to ~1
km above the
volcano. Kliuchevskoi remained at Concern Color Code Orange.
17.november 2003
Klyuchevskoi October 4th, 2003
Intense light and heat 300 meters above the crater of the Klyuchevsky
volcano in
Kamchatka has been observed. This
light and heat point to a more intense lava stream,
the Kamchatka seismological party said. Powerful ash, gas and vapor
eruptions
reaching the heights of up to 1,500 meters were observed. The ash cloud
stretched
for over 20 kilometers to the northeast.
Seismological stations in the area of the volcano recorded
a large number of surface
earthquakes and an uninterrupted spasmodic volcanic vibration. Experts
said the
Klyuchevsky volcano "entered a long eruption phase." Its activity
is gradually intensifying.
Presently, the eruption of the volcano does not pose
a threat to the population of the
peninsula. However, the ash eruptions and clouds are dangerous for aviation;
ash in the
turbines of a plane can lead to mechanical failure and unexpected eruptions
make
navigation difficult.
(RIA Novosti correspondent Oksana Guseva)
25.desember 2002
Pictures
from Kamchatka-observatory during the first 28 minutes of the eruption
Klyuchevskoy-eruption
1987
Foto: A. Yu Ozerov
|
