The Hunga Tonga-Hunga Ha'apai submarine volcano in the South Pacific erupted on the 15th. The submarine volcano is located 65 kilometers north of Nuku'alofa, the capital of Tonga. The eruption lasted 8 minutes, causing shock waves and triggering tsunamis, and the huge waves even went all the way to Alaska, Japan and South America.
RNZ reported today that there are about 20 volcanic activity a week around the world, most of which are minor, said Scott Bryan, a researcher at the University of Queensland in Australia. Hungatanga-Hungahapai is a "subduction volcano", that is, a volcano that sits on the edge of two tectonic plates, one of which is squeezed by the other. Bryan describes the "submerged zone volcanoes" as often "dual in nature", they tend to be slow or even silent, with a conical Shadow Making appearance, such as Mount Fuji in Japan; but sometimes they erupt violently, as in the The Tonga-Hungahapai volcano in recent conditions.
Bryan said that although it is still uncertain why the volcanic eruption is so powerful, he speculates that there may be two reasons, one is that there is gas in the volcanic magma, and the volcanic eruption caused a large amount of water vapor to be instantly compressed. Brian explained that when gaseous magma rushes to the ground from the depths of the ground, there will be an eruptive pressure "like opening a champagne bottle", and the gas in it will expand explosively, which will then explode the magma. . More about this source textSource text required for additional translation information Send feedback Side panels