1982年4月26日の浅間山の噴火

概要

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The Asama Volcano in central Honshu, Japan, suddenly erupted from the summit crater on 26 April, 1982. Since the last eruptive activity in 1973, the volcano had been apparently inactive in its surface manifestation. The first outbreak took place at 0225 hours followed by four minor eruptions, the last of which occurred at 0548 hours the same day. The staff members on night duty at the volcano museum at the northern foot of Asama were awakened by the rattling of a window facing the volcano. Immediately upon opening the window they heard the detonation and witnessed an incandescent eruption column and a pyroclastic flow gushing from the summit. The sound of the first detonation was not strong and only heard by a limited number of local residents.
東京大学地震研究所,Earthquake Research Institute, University of Tokyo,地震研究所ｊの論文
1983-01-17