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Suiyo volcano

submarine volcano -1418 m / -4,652 ft
Izu Islands, Japan, 28.6°N / 140.63°E
Current status: normal or dormant (1 out of 5) | Reports
Suiyo volcano books
Typical eruption style: unknown
Suiyo volcano eruptions: No recent earthquakes
TimeMag. / DepthDistanceLocation
Suiyo is an active submarine volcano forming one of the Shichiyo Seamounts, which are named for the 7 days of the week and are located south of Sofugan volcano. Suiyo ("Wednesday") is an basaltic-to-dacitic submarine volcano with a caldera and lava dome that rises about 1400 m from the sea floor to within 1418 m of the sea surface.
The summit caldera is 1.5 km wide and about 500 m deep. Major hydrothermal activity was observed in July 1991, with temperatures reaching more the 290 degrees C, and the volcano was reclassified as active by the Japan Meteorological Agency.


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