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West Mata volcano

Submarine volcano -1174 m / - 3,852 ft
Tonga, Tonga Islands, -15.1°S / -173.75°W
Current status: normal or dormant (1 out of 5) | Reports
West Mata volcano books
Typical eruption style: unspecified
West Mata volcano eruptions: 2009 
TimeMag. / DepthDistanceLocation
Mon, 3 Dec
Mon, 3 Dec 09:17 UTCM 4.7 / 10 km10 km- 91km N of Hihifo, Tonga
Tue, 20 Nov
Tue, 20 Nov 00:46 UTCM 5.0 / 35 km41 km- 83km NNE of Hihifo, Tonga

Background:

West Mata, a submarine volcano rising to within 1174 m of the sea surface, is located in the northeastern Lau Basin at the northern end of the Tonga arc, about 200 km SW of Samoa. West Mata volcano lies about 7 km west of another submarine volcano, East Mata; both lie at the northern end of the Tonga arc, north of the historically active Curacoa submarine volcano. The two volcanoes were discovered during a November 2008 NOAA Vents Program expedition, and West Mata was found to be producing submarine hydrothermal plumes consistent with a recent or lava effusion. A return visit in May 2009 documented explosive and effusive activity from two closely spaced vents, one at the summit, and the other on the SW rift zone.
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Smithsonian / GVP volcano information


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