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Global Volcanism Program | Image GVP-02490

Gas-and-steam plume emissions occurred simultaneously from vents on the SW flank and the summit of Klyuchevskoy volcano in 1983. The SW-flank vent within a 200-m-long fissure produced the dark lava flow that melted the glacier surface, providing a channel for the lava flow and producing lahars that traveled 15 km. The flank eruption began on 8 March and was initially was restricted to a glacier gorge, but then bifurcated, forming a small lava field. Intermittent summit crater explosive activity had been occurring since October 1982. Photo by Yuri Doubik, 1983 (Institute of Volcanology, Petropavlovsk).

Gas-and-steam plume emissions occurred simultaneously from vents on the SW flank and the summit of Klyuchevskoy volcano in 1983. The SW-flank vent within a 200-m-long fissure produced the dark lava flow that melted the glacier surface, providing a channel for the lava flow and producing lahars that traveled 15 km. The flank eruption began on 8 March and was initially was restricted to a glacier gorge, but then bifurcated, forming a small lava field. Intermittent summit crater explosive activity had been occurring since October 1982.

Photo by Yuri Doubik, 1983 (Institute of Volcanology, Petropavlovsk).

Keywords: lava flow | steam | gas plume | eruption | lahar


Klyuchevskoy