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Report on Klyuchevskoy (Russia) — 5 December-11 December 2012


Klyuchevskoy

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 5 December-11 December 2012
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2012. Report on Klyuchevskoy (Russia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 5 December-11 December 2012. Smithsonian Institution and US Geological Survey.

Weekly Report (5 December-11 December 2012)

Klyuchevskoy

Russia

56.056°N, 160.642°E; summit elev. 4754 m

All times are local (unless otherwise noted)


KVERT reported that during 30 November-7 December video footage and satellite imagery showed Strombolian explosions at Kliuchevskoi, along with crater incandescence and gas-and-steam emissions. A weak thermal anomaly was detected in satellite images during 1 and 4-6 December; cloud cover obscured views on the other days. The Aviation Color Code remained at Orange.

Geological Summary. Klyuchevskoy is the highest and most active volcano on the Kamchatka Peninsula. Since its origin about 6,000 years ago, this symmetrical, basaltic stratovolcano has produced frequent moderate-volume explosive and effusive eruptions without major periods of inactivity. It rises above a saddle NE of Kamen volcano and lies SE of the broad Ushkovsky massif. More than 100 flank eruptions have occurred during approximately the past 3,000 years, with most lateral craters and cones occurring along radial fissures between the unconfined NE-to-SE flanks of the conical volcano between 500 and 3,600 m elevation. Eruptions recorded since the late 17th century have resulted in frequent changes to the morphology of the 700-m-wide summit crater. These eruptions over the past 400 years have originated primarily from the summit crater, but have also included numerous major explosive and effusive eruptions from flank craters.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)