| Bezymianny
volcano |
 |
|
IAVCEI
#
|
1000-25 |
| Lat/Long |
55°58'N,
160°36'E |
| Last
eruption |
2008 |
| Volcano
edifice |
2,882
m |
|
| |
| Hazard synopsis |
Moderate
potential hazards are caused by ash plumes, ash falls, pyroclastic
flows, hot avalanches and lahars.
The volcano constitutes a potential hazard to international and
local airlines at Kamchatka because its eruptive clouds can rise
to a height of 8-15 km ASL and extend for hundreds of kilometers
from the volcano to different directions.
Ash falls possible at:
Klyuchi (40 km to the north-northeast from the volcano)
Kozyrevsk (47 km to the west-northwest)
Ust’-Kamchatsk (125 km to the north-east)
Ust’-Khairyuzovo (290 km to the north-west)
Ichinsky (315 km to the west-southwest)
|
| Monitoring status |
| Seismic, visual, satellite
monitoring, web
video camera. |
| Form and structure |
A complex
massif: inside the explosive caldera 1956 in diameter 1.3x2.8 km,
opened to the east, proceeds a growth of the lava dome Novy (New). |
| Volcanic activity |
1955, October
22 - Awakening
of the volcano after thousand-year silence. Explosive eruption:
eruptive column up to 10 km ASL, ash falls to the south-east,
north, north-west, and north-east from the volcano.
1956, March
30 – large catastrophic eruption of the volcano: eruptive column
up to 45 km ASL; ash falls to the north-east from the volcano;
deposits of directed blasts, avalanches, pyroclastic flows,
lahars. VEI- 4.
1956, April – present time – a growth of the
lava dome Novy inside the explosive caldera 1956.
1956 – 1965 – extrusive-explosive eruption of the volcano.
1965, March
9-10 - explosive eruption: eruptive column up to 10 km ASL,
ash falls to the north-east from the volcano, pyroclastic flows.
1977,
March 25 - explosive eruption: eruptive column up to 10 km
ASL, ash falls to the north-east from the volcano, pyroclastic
flows.
1979, February 11 - explosive eruption: eruptive column
up to 10 km ASL, ash falls to the north-east from the volcano,
pyroclastic flows.
1979, September 17-18 - explosive eruption:
eruptive column up to 8 km ASL, pyroclastic flows.
1980, April
19 – explosive eruption: eruptive column up to 8-9 km ASL,
pyroclastic flows.
1981, June 12-13 – explosive eruption: eruptive
column up to 8-9 km ASL, ash falls to the north-east from the
volcano, pyroclastic flows.
1981, December 20 - explosive eruption:
eruptive column up to 8-9 km ASL, ash falls to the north from
the volcano, pyroclastic flows.
1982, June 10 - explosive eruption:
eruptive column up to 8-9 km ASL, ash falls to the east from
the volcano, pyroclastic flows.
1983, May 22 - explosive eruption:
ash falls to the east from the volcano, pyroclastic flows.
1984,
February 16 - explosive eruption: ash falls to the west from
the volcano, pyroclastic flows.
1984, October 12-13 - explosive
eruption: eruptive column up to 10 km ASL, ash falls to the
north-east from the volcano, pyroclastic flows and surges.
1985,
June 29 – July 02 - explosive eruption: eruptive column up
to 10-15 km ASL, ash falls to the south-east from the volcano,
pyroclastic flows and surges.
1986, June 24 - explosive eruption:
ash falls to the south from the volcano, pyroclastic flows
and surges.
1986, December 17 - explosive eruption: eruptive
column up to 10 km ASL, ash falls to the south-southeast from
the volcano, pyroclastic flows.
1989, August 02 - explosive
eruption: eruptive column up to 5-6 km ASL, ash falls to the
north-west from the volcano, pyroclastic flows.
1990, March
09 – explosive eruption: eruptive column up to 8-10 km ASL,
ash falls, pyroclastic flows.
1992, March 11 - explosive eruption:
eruptive column up to 5 km ASL, ash falls to the west from
the volcano, pyroclastic flows.
1993, October 20-23 - explosive
eruption: eruptive column up to 8-12 km ASL, ash falls to the
south-east from the volcano, pyroclastic flows.
1995, October
05 - explosive eruption: eruptive column up to 10 km ASL, ash
falls to the north-east from the volcano, pyroclastic flows.
1997,
May 09 - explosive eruption: eruptive column up to 13.5 km
ASL, ash falls to the east- north-east from the volcano, pyroclastic
flows and surges.
1997, December 05 - explosive eruption: eruptive
column up to 10 km ASL, ash falls to the north-east from the
volcano, pyroclastic flows.
1999, February 25 - explosive eruption:
eruptive column up to 8 km ASL, ash falls to the south-east
from the volcano, pyroclastic flows.
2000, March 14 - explosive
eruption: eruptive column up to 8 km ASL, ash falls to the
west-north-west from the volcano, pyroclastic flows.
2000, November
02 - explosive eruption: eruptive column up to 6.5 km ASL,
ash falls to the south-west from the volcano, pyroclastic flows.
2001,
August 06 - explosive eruption: eruptive column up to 10 km
ASL, ash falls to the south-south-east from the volcano, pyroclastic
flows.
2001, December 15 - explosive eruption: eruptive column
up to 4-5 km ASL, ash falls to the north-west from the volcano,
pyroclastic flows.
2002, December 25 - explosive eruption: eruptive
column up to 6-8 km ASL, ash falls to the west from the volcano,
pyroclastic flows.
2003, July 26 – explosive eruption: eruptive
column up to 8-11 km ASL, ash falls to the west from the volcano,
pyroclastic flows.
2004, January 13 – explosive eruption: eruptive
column up to 6-8 km ASL, ash falls to the north-east from the
volcano, pyroclastic flows.
2004, June 18 - explosive eruption:
eruptive column up to 8-10 km ASL, ash falls to the north-east
and later south-east from the volcano, pyroclastic flows.
2005,
January 11 – explosive eruption: eruptive column up to 8-10
km ASL, ash falls to the west-south-west from the volcano,
pyroclastic flows and surges.
2005, November 30 - explosive
eruption: eruptive column up to 6 km ASL, ash falls to the
west-south-west from the volcano, pyroclastic flows.
2006, May 09 - explosive eruption: eruptive
column up to 15 km ASL, ash falls to the east-northeast from
the volcano, pyroclastic flows.
2006, December 24 - explosive eruption: eruptive
column up to 13-15 km ASL, ash falls to the north-east from
the volcano, pyroclastic flows.
2007, May 11 - explosive eruption: ash falls to the north, north-east from
the volcano, pyroclastic flows.
2007, October 14-15 - explosive eruption: ash falls to the south-east from
the volcano, pyroclastic flows.
2007, November 06 - explosive eruption: ash falls, pyroclastic flows.
2008, August 19 - explosive eruption: ash falls to the south-west from
the volcano.
KVERT information releases.
State of Activity Kamchatkan
Volcanoes.
|
|
| Location |
The
volcano is located in the center of Klyuchevskaya group volcanoes
of the Kamchatka, at a distance of 40 km from Klyuchi and of 350
km from Petropavlovsk-Kamchatsky. |
| Composition |
| Andesites predominant, besides
dacites, andesibasalts and basalts. |
| Age |
About 10000-11000 – Pra-Bezymianny
volcano.
About 5500 – Bezymianny volcano. |
| |
 |
Holocene
Volcanoes in Kamchatka. Bezymianny volcano.
Literature
about Bezymianny volcano.
The
important dates of Volcanology. 50 years from the day of
activity renewal after
thousand-year silence.
Alexander
I. Malyshev "The Life of the Volcano". |
|