INSTALLATION OF PENETRATOR-TYPE THERMOMETERS AND BLASTMETERS FOR DETECTING PYROCLASTIC SURGES DURING ERUPTIONS OF UNZEN VOLCANO, KYUSHU, JAPAN

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概要

• 論文の詳細を見る

• Pyroclastic flow is one of the most destructive eruptive phenomena and has kept scientists from making direct measurements of its physical properties. We constructed two types of penetrators to measure the temperature, over pressure and particle velocity of a pyroclastic surge accompanied by a pyroclastic-flow eruption. The penetrator-type thermometer measures temperature and duration of a pyroclastic surge based on the change in state of several kinds of metals and thermodyes which melt at specific temperatures during volcanic events. The penetrator-type blastmeter estimates the explosion energy and particle velocity of a pyroclastic surge on the basis of the deformation of a thin metal plate. A helicopter of the Japanese Self Defense Force was used to drop 12 penetrators from a height of 30-45m at 5 points on Unzen Volcano in Kyushu, Japan, most of which landed erect. Measurements made with this type of penetrator enable us to obtain certain physical properties of pyroclastic surges in dangerous areas during explosive eruptions.

• 日本自然災害学会の論文

著者

• Taniguchi Hiromitsu

  Science Education Institute Of Osaka Prefecture

• Suzuki-kamata Keiko

  Department Of Earth Sciences Faculty Of Science Kobe University

• SANGEN Kazuyoshi

  Department of Earth Sciences, Faculty of Science, Kobe University

• KAMATA Hiroki

  Osaka Office, Geological Survey of Japan

• NAKADA Setsuya

  Department of Earth and Planetary Sciences, Kyushu University

• Nakada Setsuya

  Earthquake Research Institute The University Of Tokyo

• Nakada Setsuya

  Department Of Earth And Planetary Sciences Kyushu University

• Kamata H

  Kyoto Univ. Kyoto Jpn

• Sangen Kazuyoshi

  Department Of Earth Sciences Faculty Of Science Kobe University

関連論文

• Detailed Stratigraphical and Geological Characteristics of Volcanic and Epiclastic Deposits Burying a Roman Villa on the Northen Flank of Mt. Vesuvius(Italy)
• INSTALLATION OF PENETRATOR-TYPE THERMOMETERS AND BLASTMETERS FOR DETECTING PYROCLASTIC SURGES DURING ERUPTIONS OF UNZEN VOLCANO, KYUSHU, JAPAN
• Determination of burial age of the "Augustus' villa" (Italy)
• Multiple magma reservoirs for the 1707 eruption of Fuji volcano, Japan
• ^U-^Th radioactive disequilibrium in the northern Izu arc : (^Th/^Th) in the sub-arc mantle

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