Volcano Islands, Japan
23.07 N, 142.30 E
summit elevation -391 m
submarine volcano
Nikko is a large underwater volcano in the volcano islands, Japan.
Further Reading
Matsumoto, S. and Hasegawa, A., 1996. Distinct S wave reflector in the midcrust beneath Nikko-Shirane volcano in the northeastern Japan arc. Journal of Geophysical Research: Solid Earth, 101(B2), pp.3067-3083.
Discoloured water was observed above the volcano yearly from 1979-1990