Type: submarine vent Activity: active Last Eruption: 1916 AD Rock Type: ? Eruptive Volume: ? cu km Location
Map from Xerox PARC Latitude: 31.43 N Longitude: 140.05 E
Geologic Background:
Historic Activity:
The volcano last erupted in 1916, ejecting tephra.
Discoloration was seen at the shore and near the island
in 1975, 1976, and 1977.
Recent Activity:
Discolored water was seen in 1989 and August
1992.
A zone of discolored yellowish water was observed by
fishing crews on Oct. 7, 1992