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West Mata volcano

Updated: Feb 29, 2024 12:59 GMT -
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)
Last update: 14 Dec 2021 (Smithsonian / USGS Weekly Volcanic Activity Report)

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Typical eruption style: unspecified
West Mata volcano eruptions: 2009 

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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


See also: Sentinel hub | Landsat 8 | NASA FIRMS
Wed, 13 May 2009, 06:00

West Mata volcano (Tonga) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 May-19 May 2009 (New Activity / Unrest)

In early May, scientists from an NSF (RIDGE and MARGINS Programs) and NOAA (Ocean Exploration Program) sponsored cruise on the University of Washington vessel, the R/V Thompson, traveled to the Lau-Tonga region. This rapid-response expedition was undertaken after strong indications of submarine eruptive activity had been detected during a November 2008 NOAA Vents Program expedition. On 6 and 7 May, team members used the Jason 2 ROV to observe eruptions from two vents of West Mata, a small submarine volcanic cone in the northeast Lau Basin, about 200 km SW of Samoa. ... Read all
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