Geologic Background:
The three volcanoes, whose summits are 13-18 km
apart, are the highest features of a massive submarine
volcano. This three-peaked submarine volcano 130 km NW of
Iwo-jima.
Historic Activity:
- A submarine eruption had previously been reported in
1543 from a point near the SW summit.
Recent Activity:
- First activity observed on March 7, 1984. From March
through May activity included discolored water, floating
lapilli, and dark plumes. This vent has now been formally
named the Kaitoku Seamount.
Data Sources:
- Smithsonian's SEAN Bulletin (V. 9, No. 4 to V. 9, No.
10).
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