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Report on Fukujin (United States) — July 1979


Scientific Event Alert Network Bulletin, vol. 4, no. 7 (July 1979)
Managing Editor: David Squires.

Fukujin (United States) Occasional water discoloration during 1978-79

Please cite this report as:

Global Volcanism Program, 1979. Report on Fukujin (United States) (Squires, D., ed.). Scientific Event Alert Network Bulletin, 4:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN197907-284133


United States

21.93°N, 143.47°E; summit elev. -217 m

All times are local (unless otherwise noted)

Discolored water was occasionally visible over Fukujin, previously called Hukuzin-oka-no-ba, in 1977, 1978, and 1979. [Discolored water was specifically noted, in an included table of observations during January 1978-July 1979, on 10, 24, 25, and 26 January 1978, 24 March 1978, 25 August 1978, 26 April 1979, and 12 July 1979.]

Geological Summary. One of the larger of the submarine volcanoes of the Marianas arc, Fukujin seamount has risen on occasion to just beneath the sea surface. Intermittent periods of water discoloration have been observed since the mid-20th century, and eruptions producing floating pumice were noted on several occasions.

Information Contacts: JMA, Tokyo.