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The explosion was so huge that it penetrated through the overlying seawater and triggered the tsunami. [85] Importantly, the atmospheric waves caused by the explosion coupled to the ocean, generating additional tsunamis at large distances from the volcano; volcanic tsunamis normally do not reach far from the edifice. [86]
[3] [10] The volcano's base at the seafloor is approximately 20 km in diameter, [11] rising roughly 2,000 m towards the sea surface. Before the 2022 eruption, the volcano's caldera was roughly 150 m below sea-level, and had a size of 4 × 2 km. [7] Its northern and southern portions were filled by volcanic deposits from previous eruptions. [7]
An eruption on 16 March injured 10 people, including a BBC News television crew, after magma exploded upon contact with snow. [97] [98] 3 Mount Ontake [99] Japan 2014 63 A phreatic eruption and pyroclastic flow occurred without warning, killing 63 people. Deadliest eruption in Japan since 1902, first volcano-related deaths in Japan since 1991. 2
The 1783 eruption of the Laki volcano in Iceland lasted eight months and spewed nearly nine cubic miles of basaltic lava up from the bowels of the planet. The cloud of volcanic ash it belched out ...
La Soufriere volcano fired an enormous amount of ash and hot gas early Monday in the biggest explosive eruption yet since volcanic activity began on the eastern Caribbean island of St. Vincent ...
Satellite images of the 15 January 2022 eruption of Hunga Tonga-Hunga Haʻapai This is a sortable list of large eruptions that occurred between 11.7 Ka and 450+ Ma . Uncertainties as to dates and tephra volumes are not restated, and references are not repeated.
The undersea volcano that erupted off the coast of Tonga this month was “hundreds of times” more powerful than the nuclear bomb that hit Hiroshima in World War II, according to NASA. The Jan ...
Volcanoes vary greatly in their level of activity, with individual volcanic systems having an eruption recurrence ranging from several times a year to once in tens of thousands of years. [66] Volcanoes are informally described as erupting, active, dormant, or extinct, but the definitions of these terms are not entirely uniform among ...