The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
A possible submarine volcano is located on the Ogasawara Plateau (3200 m depth) about 330 km NEN of Kita-Iwo-jima. A table of possible submarine eruptions by the Japanese Maritime Safety Agency included an entry of observed water discoloration due to submarine eruptions in this area in March 1974.
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