ACTIVE VOLCANOES OF KAMCHATKA AND NORTHERN KURILES |
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| Avachinsky volcano |
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| Hazard synopsis | ||||||||||||||||||||||||
Potential
hazards are caused by ash plumes, ash falls, lava and pyroclastic
flows, hot avalanches and lahars. The volcanic dangerous zone threatened
by lava and pyroclastic flows, hot avalanches does not exceed 10
km from the volcano. Ash falls and lahars present potential hazard
for Petropavlovsk-Kamchatsky, Yelizovo and other settlements situated
close to the volcano. Avachinsky volcano exposes potential hazard to the Kamchatkan airports and aircrafts flying over Kamchatka because its eruptive clouds can rise to a height up to 10-15 km above sea level and extend for hundreds of kilometers. Ash falls possible at: Petropavlovsk-Kamchatsky (27 km to the south-south-west from the volcano) Yelizovo (30 km to west-south-west) Vilyuchinsk (55 km to the south-west) |
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| Monitoring status | ||||||||||||||||||||||||
| Seismic, visual and satellite, web video camera | ||||||||||||||||||||||||
| Form and structure | ||||||||||||||||||||||||
Volcano
belongs to the Somma-Vesuvius type. The cone with the crater (diameter
of 350 m) filled by eruption 1991 lava is located Inside of Somma
(diameter of 4 km) eccentrically to the north. |
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| Volcanic activity | ||||||||||||||||||||||||
| 1737 - explosive eruptions 1772 ( ?) 1779 - explosive eruptions 1827 - explosive eruption 1855 - explosive eruptions 1878 - explosive eruptions 1881 - explosive eruptions 1894-1895 - effusive-explosive eruptions 1901 - explosive eruption 1909 - explosive eruption 1926 - effusive-explosive eruption 1927- explosive eruption 1938 - effusive-explosive eruption 1945 - explosive eruptions 1991 - effusive-explosive eruption 2001 - single ash explosion |
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| Location | ||||||||||||||||||||||||
The
volcano belongs to the NW-trending chain of 5 volcanoes, which begins
from the south the Eastern volcanic zone of Kamchatka. The volcano
is located 25-30 km from Petropanlovsk-Kamchatsky and Yelizovo. |
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| Composition | ||||||||||||||||||||||||
| Basalts, andesites-basalts, andesites, dacites | ||||||||||||||||||||||||
| Age | ||||||||||||||||||||||||
| Upper Pleistocene for
Pra-Avachinsky ~ 4000 years for modern cone |
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