Report on Zhupanovsky (Russia) — 13 January-19 January 2016
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
13 January-19 January 2016
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2016. Report on Zhupanovsky (Russia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 13 January-19 January 2016. Smithsonian Institution and US Geological Survey.
53.589°N, 159.15°E; summit elev. 2899 m
All times are local (unless otherwise noted)
Based on visual observations, KVERT reported that at 1636 on 19 January an explosion at Zhupanovsky generated an ash plume that rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted 20 km E. The Aviation Color Code was raised to Orange (the second highest on a four-color scale).
Geological Summary. 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.