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Hunga Tonga and Hunga Haʻapai are the only subaerial parts of the volcano. Hunga Tonga is the eastern island, while Hunga Haʻapai is the western one. They are part of Tonga's Haʻapai group of islands, [15] an island arc formed at the convergent boundary where the Pacific Plate subducts under the Indo-Australian Plate. [6] [16] [17]
Government of Tonga, official 1962 land survey Siebert L, Simkin T (2002–present). Volcanoes of the World: an Illustrated Catalog of Holocene Volcanoes and their Eruptions .
Hunga Tonga–Hunga Haʻapai is 65 kilometres (40 mi) north of Tongatapu, the country's main island, [9] and is part of the highly active Tonga–Kermadec Islands volcanic arc, a subduction zone extending from New Zealand to Fiji. [10] [11] On the Volcanic Explosivity Index scale, the eruption was rated at least a VEI-5.
Tofua caldera. Tofua is a volcanic island in Tonga.Located in the Haʻapai island group, it is a steep-sided composite cone with a summit caldera.It is part of the highly active Kermadec-Tonga subduction zone and its associated volcanic arc, which extends from New Zealand north-northeast to Fiji, and is formed by the subduction of the Pacific Plate under the Indo-Australian Plate. [2]
WELLINGTON, New Zealand (AP) — An undersea volcano erupted in spectacular fashion near the Pacific nation of Tonga on Saturday, sending large tsunami waves crashing across the shore and people ...
The Tonga–Kermadec Ridge is an oceanic ridge in the south-west Pacific Ocean underlying the Tonga–Kermadec island arc.It is a result of the most linear, fastest converging, and seismically active subduction boundary on Earth, the Kermadec–Tonga subduction zone, and consequently has the highest density of submarine volcanoes.
An underwater volcano erupted on January 15 near the Pacific island of Tonga. Scientists are beginning to understand just how big it was.
The Tonga Meteorological Services said a tsunami warning was in effect for all of the archipelago, and data from the Pacific Tsunami Warning Center showed waves of 80 centimeters (2.6 feet) had ...