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Unnamed 18.325°S/174.365°W volcano

Submarine volcano -40 m / - 131 ft
Tonga, Tonga Islands, -18.33°S / -174.37°W
Current status: dormant (1 out of 5) | Reports
Typical eruption style: unspecified
Unnamed 18.325°S/174.365°W volcano eruptions: 2001 
TimeMag. / DepthDistanceLocation
Sat, 30 Jun
Sat, 30 Jun 21:01 UTCM 4.9 / 53 km20 km TONGA

Background:

A submarine volcano along the Tofua volcanic arc was first observed in September 2001. The newly discovered volcano lies NW of the island of Vava'u about two-thirds of the way between Late and Fonualei volcanoes. The site of the eruption is along a NNE-SSW-trending submarine plateau south of Fonualei with an approximate bathymetric depth of 300 m. T-phase waves were recorded on September 27-28, and on the 27th local fishermen observed an ash-rich eruption column that rose above the sea surface. No eruptive activity was reported after the 28th, but water discoloration was documented during the following month. In early November rafts and strandings of dacitic pumice were reported along the coast of Kadavu and Viti Levu in the Fiji Islands. The depth of the summit of the submarine cone following the eruption determined to be 40 m during a 2007 survey; the crater of the 2001 eruption was breached to the east.
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Smithsonian / GVP volcano information


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