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Report on Zhupanovsky (Russia) — 2 December-8 December 2015

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 2 December-8 December 2015
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2015. Report on Zhupanovsky (Russia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 2 December-8 December 2015. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (2 December-8 December 2015)


Zhupanovsky

Russia

53.589°N, 159.15°E; summit elev. 2899 m

All times are local (unless otherwise noted)


KVERT reported moderate eruptive activity at Zhupanovsky during 27 November-4 December. Explosions on 27 and 30 November generated ash plumes that rose to altitudes of 6-7 km (19,700-23,000 ft) a.s.l. and drifted 300 km E and SE. Pyroclastic flow deposits 15.5 km long were observed on the S flank after the 30 November event. Weak thermal anomalies were detected in satellite images over the crater on both of those days, and in the area of the pyroclastic flow deposits on 30 November and 3 December.

Geologic Background. The Zhupanovsky volcanic massif consists of four overlapping stratovolcanoes along a WNW-trending ridge. The elongated volcanic complex was constructed within a Pliocene-early Pleistocene caldera whose rim is exposed only on the eastern side. Three of the stratovolcanoes were built during the Pleistocene, the fourth is Holocene in age and was the source of all of Zhupanovsky's historical eruptions. An early Holocene stage of frequent moderate and weak eruptions from 7000 to 5000 years before present (BP) was succeeded by a period of infrequent larger eruptions that produced pyroclastic flows. The last major eruption took place about 800-900 years BP. Historical eruptions have consisted of relatively minor explosions from the third cone.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)