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The zone includes most of the islands of Vanuatu, the Santa Cruz islands of the southern Solomon Islands, [4] and the Loyalty Islands.A number of ocean floor features are related to the zone, in particular the New Hebrides Trench (South New Hebridies Trench) [5] and the North New Hebrides Trench (Torres Trench) which is separated from the southern trench by the d'Entrecasteaux Ridge and the ...
The d'Entrecasteaux (French pronunciation: [dɑ̃tʁəkasto]) Ridge (DER) is a double oceanic ridge in the south-west Pacific Ocean, north of New Caledonia and west of Vanuatu Islands. It forms the northern extension of the New Caledonia– Loyalty Islands arc , and is now actively subducting in the Vanuatu subduction zone under the Vanuatu/New ...
"Potential tsunami hazard of the southern Vanuatu subduction zone: tectonics, case study of the Matthew Island tsunami of 10 February 2021 and implication in regional hazard assessment". Natural Hazards and Earth System Sciences. 23 (2): 393–414. Bibcode:2023NHESS..23..393R. doi: 10.5194/nhess-23-393-2023. S2CID 253207848.
File information Description Vanuatu subduction zone and associated ocean floor features Source See Vanuatu subduction zone, New Hebrides Trench, North New Hebrides Trench, d'Entrecasteaux Ridge, North Fiji Basin, New Britain subduction zone, Vityaz Trench, Hunter Ridge.
This subduction zone is one of the most active plate boundaries globally, moving at a rate of approximately 170 mm (7 in) per year. [5] While much of the island arc experiences intermediate-depth earthquakes along a Wadati–Benioff zone that dips steeply at 70°, the area adjacent to the D'entrecasteaux Ridge does not. There is a corresponding ...
The ridge contains Matthew Island and Hunter Island and extends from southern Vanuatu near the Volsmar seamount via the region of Ceva-i-Ra (Conway Reef) towards Fiji. [4] Its length on this definition is about 550 km (340 mi) but earlier work included other parts of the Hunter fracture zone that are now known to be discontinuous topographically and on such historic definitions the length ...
The North Fiji Basin (NFB) is an oceanic basin west of Fiji in the south-west Pacific Ocean.It is an actively spreading back-arc basin delimited by the Fiji islands to the east, the inactive Vitiaz Trench to the north, the Vanuatu/New Hebrides island arc to the west, and the Hunter fracture zone to the south. [2]
This is active volcanically as part of a separate subduction system to the rest of the Vanuatu subduction zone that has been called the Matthew and Hunter subduction zone. [10] The Hunter Ridge and Hunter fracture zone are the south eastern terminus of the Vanuatu subduction zone's subduction and its associated slab edge. From 3 million years ...