Global Volcanism Program | Volcanic Activity Report on Nishinoshima (Japan)

Volcanic Activity Report on Nishinoshima (Japan) — 5 October-11 October 2022

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 5 October-11 October 2022
Managing Editor: Sally Sennert

Please cite this report as:

Global Volcanism Program, 2022. Report on Nishinoshima (Japan) (Sennert, S, ed.). Weekly Volcanic Activity Report, 5 October-11 October 2022. Smithsonian Institution and US Geological Survey. https://volcano.si.edu/showreport.cfm?gvpvar=GVP.WVAR20221005-284096

Nishinoshima

Japan

All times are local (unless otherwise noted)

JMA reported that the eruption at Nishinoshima continued during 5-11 October. Ash plumes rose 2.2-3.5 km (7,200-11,500 ft) a.s.l. and drifted in multiple directions.

Sources: Japan Meteorological Agency (JMA), Tokyo Volcanic Ash Advisory Center (VAAC)

Geological Summary. The small island of Nishinoshima was enlarged when several new islands coalesced during an eruption in 1973-74. Multiple eruptions between 2013 and 2023 completely covered the previous exposed surface and continued to enlarge the island. The island is the summit of a massive submarine volcano that has prominent peaks to the S, W, and NE. The summit of the southern cone rises to within 214 m of the ocean surface 9 km SSE.