Klyuchevskoy volcano (Kamchatka): activity summary 13-25 March 2015

Do, 26. Mär 2015, 17:45
17:45 PM | VON: T
Mild activity (small explosions and light ash emissions) continues at the summit crater of the volcano
from the Smithsonian / USGS Weekly Volcanic Activity Report 18-24 March 2015:
"KVERT reported that during 13-20 March the eruption at Klyuchevskoy continued but the energy of the explosions decreased significantly.
Explosions generated ash plumes that rose to altitudes of 5-5.5 km (16,400-18,000 ft) a.s.l. During 16-17 March satellite images showed a weak thermal anomaly over the volcano and ash plumes that drifted 90 km E.
Ash plumes were again detected in images during 22-23 March. On 25 March the Aviation Color Code was lowered to Yellow."

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Mi, 18. Mär 2015, 08:11
Degassing plume from Klyuchevskoy this morning (KVERT)
Mild activity is again occurring at the summit vent of the tall stratovolcano. Aviation color code is orange. Read all
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NASA photo of the eruption of Klyuchevsky volcano on 30 September, 1994, the volcano's largest explosion in 40 years. The large
NASA photo of the eruption of Klyuchevsky volcano on 30 September, 1994, the volcano's largest explosion in 40 years. The large

Background:

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.  The morphology of its 700-m-wide summit crater has been frequently modified by historical eruptions, which have been recorded since the late-17th century.  Historical eruptions have originated primarily from the summit crater, but have also included numerous major explosive and effusive eruptions from flank craters.


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Source: Klyuchevsky information by the GVP (Smithsonian Institution)



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