Episode 2 of 3
Three-month plinian eruption begins
- When
- 9 May – 4 August 1783
- Where
- Mount Asama, central Honshū, Japan
- Part of
- Mount Asama Eruption
A plinian eruption starting 9 May 1783 produced pumice falls, pyroclastic flows, and lava flows while enlarging the cone.
The three-month-long plinian eruption that began on 9 May 1783 produced andesitic pumice falls, pyroclastic flows, and lava flows, and enlarged the volcano's cone. The lava flow erupted during the Tenmei eruption later solidified; on the northern slope of Mount Asama it is known as Onioshidashi, meaning 'expelling demons'.
Sources
- Mount Asama Wikipedia, revision of 2026-08-15
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.