Global Volcanism Program | Image GVP-10783
The topographic high (red) at the top of this bathymetric image is Kita-Fukutokutai submarine volcano. This submarine volcano lies halfway between Iwojima and Minami-Iwojima islands, NW of Fukutoku-Okanoba submarine volcano (center; north of Minami-Iwojima). Water discoloration was reported several times beginning in 1937 at Kita-Fukutokutai volcano. In 1988 a fishing boat reported an eruption column about 100 m high, although the report was not confirmed at the time.
Image courtesy of HOD Japan Coast Guard (http://www1.kaiho.mlit.go.jp/jhd-E).
Keywords: submarine volcano