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Phreatic eruption


What is a Phreatic Eruption? Volcano Fast Facts [Volcanic Types of Eruption]


Phreatic eruptions at Poás volcano, Costa Rica


Taal Eruption 2020: What is a phreatic eruption?


Phreatic eruptions from Krakatau's Crater Lake


What is PHREATIC ERUPTION? What does PHREATIC ERUPTION mean? PHREATIC ERUPTION meaning & explanation

A phreatic eruption, also called a phreatic explosion, ultravulcanian eruption or steam-blast eruption, occurs when magma heats ground or surface water. The extreme temperature of the magma causes near-instantaneous evaporation to steam, resulting in an explosion of steam, water, ash, rock, and volcanic bombs. At Mount St. Helens, hundreds of steam explosions preceded a 1980 plinian eruption of the volcano. A less intense geothermal event may result in a mud volcano.
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