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Diaporama
Monowai volcan
Volcan sous-marin -132 m / - 433 ft
Kermandec Islands, New Zealand, -25.89°S / -177.19°W
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Monowai livres
Eruptions du volcan Monowai:
2008, 2006, 2005, 2003, 2002 (Nov), 2002 (May), 1999, 1997-98, 1997 (Apr), 1996, 1995, 1990-91, 1988, 1986, 1982, 1980, 1979, 1978, 1977 (Oct), 1977 (Apr), 1944(?)
Style éruptif tipique:
explosive
Derniers séismes proches
Derniers images satellite

Sentinel hub | Landsat 8
 

News & activity updates from Monovai submarine volcano

Submarine eruption near Tonga: Pumice raft observed on 16 Nov, but origin volcano remains unknown

Monday Nov 28, 2016 17:50 PM | AUTEUR : T

Location of the observed pumice rafts (image: GeoNet)
Location of the observed pumice rafts (image: GeoNet)
It is still unclear which volcano produced the pumice raft observed west of Minerva Reef southwest of Tonga (Pacific Ocean) by a New Zealand Royal Air Force aircraft on 16 November.
The pumice rafts were long ribbons, 10 km long and tens to hundreds of meters wide according to satellite images, likely as the combined result of sea waves, winds and currents.The area is between several volcanic arcs: Vanuatu to the north, Tonga arc to the east, and the Kermadec arc to the southeast. New Zealand geologists do not think that it is likely to come from Monowai submarine volcano, but rather think it might be one of the volcanoes in Tonga. However, the origin of the pumices remains a riddle and illustrates how little we know about submarine eruptions.
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Source:
Actualités précédentes
Pumice raft observed on 31 Oct near Monovai seamount (RNZAF via GeoNet)
Friday, Nov 14, 2014
New Zealand scientists concluded that most likely 3 underwater eruptions occurred during this October at the shallow submarine volcano, one of the most active ones in the Tonga-Kermadec arc. ... [details]
A satellite image from 10 Aug showing the pumice raft off Raoul Island in the Kermadec Islands (Image: Aqua/MODIS 2012/223
Saturday, Aug 11, 2012
A submarine eruption has taken place a few days ago in the Kermandec Islands. The eruption was not directly observed, but a new large pumice raft has been spotted by NZ navy and others. The pumice is drifting 85 nautical miles south-west of Raoul Island on Thursday night (9 Aug). ... [details]

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