Report on Zhupanovsky (Russia) — 5 November-11 November 2014
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
5 November-11 November 2014
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2014. Report on Zhupanovsky (Russia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 5 November-11 November 2014. Smithsonian Institution and US Geological Survey.
53.589°N, 159.15°E; summit elev. 2899 m
All times are local (unless otherwise noted)
KVERT reported that a strong explosive eruption at Zhupanovsky occurred at 0955 on 8 November, generating an ash plume that rose to an altitude of 10 km (32,800 ft) a.s.l. and drifted 26 km SSW. The Aviation Color Code was raised to Orange. On 9 November ash plumes detected in satellite images rose to altitudes of 3-4 km (9,800-13,100 ft) a.s.l. and drifted 190-250 km SE.
Geological Summary. The Zhupanovsky volcanic massif consists of four overlapping stratovolcanoes along a WNW-trending ridge. The elongated 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. An early Holocene stage of frequent moderate and weak eruptions from 7,000 to 5,000 years before present (BP) was followed by a period of infrequent larger eruptions that produced pyroclastic flows. The last major eruption took place about 800-900 BP. Recorded eruptions have consisted of relatively minor explosions from Priemysh, the third cone from the E about 2.5 km from the summit peak.