Fukutoku-Oka-no-Ba, 2021

A large-scale eruption at the shallow submarine volcano in Japan's Izu-Bonin arc, dated to 12 or 13 August by different accounts, created two new islands and sent a volcanic column as high as 16 km into the stratosphere. Fallout of pumice lapilli from the water-rich eruption column generated a large floating pumice raft, one of few documented submarine eruptions to produce both a large aerial plume and a raft. Discoloured water was still visible over the site on 27 September.

Eruption start

2021-08-13

Eruption end

2021-09

Volcanic Explosivity Index (VEI)

4

Volcano

Fukutoku-Oka-no-Ba

GVP volcano page

volcano.si.edu/volcano.cfm?vn=284130

Category: Disasters & Incidents

Tags: japan, izu-bonin arc, submarine eruption, pumice raft, new island

Coordinates: 24.285, 141.481

Part of Volcanic eruptions of VEI 4 since 2000

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