Report on Zhupanovsky (Russia) — 18 February-24 February 2015
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 18 February-24 February 2015
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2015. Report on Zhupanovsky (Russia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 18 February-24 February 2015. Smithsonian Institution and US Geological Survey.
Zhupanovsky
Russia
53.589°N, 159.15°E; summit elev. 2899 m
All times are local (unless otherwise noted)
KVERT reported that a moderate explosive eruption at Zhupanovsky continued during 13-20 February. Satellite images detected a thermal anomaly over the volcano during 14-15 and 18 February. Ash clouds rose to altitudes of 3-3.5 km (10,000-11,500 ft) a.s.l. and drifted over 200 km W during 15-16 February and SE during 17-19 February. The Aviation Color Code remained at Orange.
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.
