Report on Mutnovsky (Russia) — 8 June-14 June 2005
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 8 June-14 June 2005
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2005. Report on Mutnovsky (Russia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 8 June-14 June 2005. Smithsonian Institution and US Geological Survey.
52.449°N, 158.196°E; summit elev. 2288 m
All times are local (unless otherwise noted)
The Concern Color Code at Mutnovsky was reduced from Yellow to Green during 3-10 June. There were no significant changes in volcanic activity during the week. A thermal anomaly was observed at the volcano on satellite imagery, possibly due to the heat from a thermal field.
Geologic Background. Massive Mutnovsky, one of the most active volcanoes of southern Kamchatka, is formed of four coalescing stratovolcanoes of predominately basaltic composition. Multiple summit craters cap the volcanic complex. Growth of Mutnovsky IV, the youngest cone, began during the early Holocene. An intracrater cone was constructed along the northern wall of the 1.3-km-wide summit crater. Abundant flank cinder cones were concentrated on the SW side. Holocene activity was characterized by mild-to-moderate phreatic and phreatomagmatic eruptions from the summit crater. Historical eruptions have been explosive, with lava flows produced only during the 1904 eruption. Geothermal development is planned at Mutnovsky, which has the highest heat capacity of any volcano in the Kuril-Kamchatka arc.