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Global Volcanism Program | Image GVP-02497

Steam rises from the margins of an active lava flow from a SW-flank vent of Klyuchevskoy in 1974. Renewed summit crater explosive activity began 8 April, with lava fountaining beginning 18 May. Increasing seismicity preceded the 23 August outbreak from 3,400-3,600 m elevation on the SW flank. Lava effusion continued until December.  Photo by I.T. Kirsanov, 1974 (courtesy of Oleg Volynets, Institute of Volcanology, Petropavlovsk).

Steam rises from the margins of an active lava flow from a SW-flank vent of Klyuchevskoy in 1974. Renewed summit crater explosive activity began 8 April, with lava fountaining beginning 18 May. Increasing seismicity preceded the 23 August outbreak from 3,400-3,600 m elevation on the SW flank. Lava effusion continued until December.

Photo by I.T. Kirsanov, 1974 (courtesy of Oleg Volynets, Institute of Volcanology, Petropavlovsk).

Keywords: lava flow | eruption | gas plume | steam


Klyuchevskoy