水蒸気爆発
1. Phreatic eruptionA phreatic eruption, also called a phreatic explosion or ultravulcanian eruption, occurs when magma heats ground or surface water. The extreme temperature of the magma (anywhere from 600 to 1,170 °C) 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.
Read “Phreatic eruption” on English Wikipedia
Read “水蒸気爆発” on Japanese Wikipedia
Read “Phreatic eruption” on DBpedia
Read “Phreatic eruption” on English Wikipedia
Read “水蒸気爆発” on Japanese Wikipedia
Read “Phreatic eruption” on DBpedia
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