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Global Volcanism Program | Image GVP-05657

Gas-and-steam plumes emanate from a new eruptive fissure cutting the summit of Japan's Komagatake volcano on 7 March 1996. A phreatic eruption began the evening of the 5th and deposited ash onto snow. The eruption took place from the 1929 crater and from a 200-m-long N-S fissure on the S flank. Eruptive activity, producing steam-rich ash plumes, was strong until 7 March and declined after 12 March. Photo by the Shin Engineering Consultant Company, 1996 (courtesy of Mitsuhiro Yoshimoto, Hokkaido University).

Gas-and-steam plumes emanate from a new eruptive fissure cutting the summit of Japan's Komagatake volcano on 7 March 1996. A phreatic eruption began the evening of the 5th and deposited ash onto snow. The eruption took place from the 1929 crater and from a 200-m-long N-S fissure on the S flank. Eruptive activity, producing steam-rich ash plumes, was strong until 7 March and declined after 12 March.

Photo by the Shin Engineering Consultant Company, 1996 (courtesy of Mitsuhiro Yoshimoto, Hokkaido University).

Keywords: fissure vent | steam | volcanic gas | plume | ash | lava water interaction | snow and ice | eruption


Hokkaido-Komagatake