Report on Chirinkotan (Russia) — 5 August-11 August 2015
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 5 August-11 August 2015
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2015. Report on Chirinkotan (Russia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 5 August-11 August 2015. Smithsonian Institution and US Geological Survey.
48.98°N, 153.48°E; summit elev. 724 m
All times are local (unless otherwise noted)
According to SVERT observers reported a weak eruption at Chirinkotan on 10 August, characterized by block flows and pyroclastic flows that reached the coast. The Aviation Color Code was raised to Orange.
Geologic Background. The small, mostly unvegetated 3-km-wide island of Chirinkotan occupies the far end of an E-W volcanic chain that extends nearly 50 km W of the central part of the main Kuril Islands arc. It is the emergent summit of a volcano that rises 3000 m from the floor of the Kuril Basin. A small 1-km-wide caldera about 300-400 m deep is open to the SW. Lava flows from a cone within the breached crater reached the shore of the island. Historical eruptions have been recorded since the 18th century. Lava flows were observed by the English fur trader Captain Snow in the 1880s.