Main Volcanoes Avachinsky

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Facts Description
Name: Avachinsky
GVP Number: 300100
Synonims: Avacha volcano, Avacha, Avachinskaya sopka, Awatscha, Awatschinskij
Region: Kamchatka Peninsula
Volcanic Area: Eastern Kamchatka
Coordinates:
53°15'22" N   158°50'10" E
Absolute Elevation: 2751 m
Status: Active
Aviation Color Code: GREEN
Location: The volcano is located to the north from Avacha bay, in 25-30 km from Petropavlovsk-Kamchatsky and Elizovo. The volcano form part of Avachinskaya group of volcanoes, which begins from the south the Eastern volcanic zone of Kamchatka.
Type: Stratovolcano
Composition: andesite-basalts, two-pyroxene andesites, hornblend andesites, hornblend dacites, high-aluminium basalts, high-magnesium basalts, rhyolites
Recent Known Eruption: 2001/10/5
The stratovolcano belongs to the Somma-Vesuvius type of 20 km diameter. Height of the eastern part of the Somma is 2317 m. Acting cone is located eccentrically into the Somma and rises above the edge of the Somma at 400-1000 m. A diameter of the base of the cone is about 4 km, and a diameter of the crater is 350 m. The atrio of the Somma filled up of a glacier, going down in different directions in five tongues.

References

1. Заварицкий А.Н. Вулкан Авача на Камчатке. М.: Наука. 1977. 308 с.
2. Камчатка, Курильские и Командорские острова // Геология СССР. М.: Недра. 1964. Т. XXXI. 734 с.
Potencial Hazard
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)


Volcanic hazards map for Avachinsky volcano (Bazanova et al., 2001).




 

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