Conditions of magma chambers that cause large explosive eruptions
| Project/Area Number |
20540474
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
TOMIYA Akihiko National Institute of Advanced Industrial Science and Technology, 地質情報研究部門, 主任研究員 (30357553)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | マグマ・火成岩 / マグマ溜まり / 噴火 / 火山 / 実験岩石学 / 有珠火山 / 樽前火山 / 北海道駒ケ岳火山 / 高温高圧岩石融解実験 / マグマ混合 / 斑晶鉱物 / 内熱式ガス圧装置 / 北海道駒ヶ岳火山 |
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| Research Abstract |
Petrographic study and high-pressure experiments were conducted on eruptive products of large explosive eruptions that had occurred at Usu volcano, Tarumai volcano and Hokkaido-Komagatake volcano during 17th century. Conditions (temperatures, pressures and water contents) of the magma chambers beneath these volcanoes were estimated. Magma mixing process between a new high-temperature magma and a pre-existing low-temperature magma was revealed for each volcano. The time of the magma mixing was also estimated for each pumice eruption.
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Report
(4 results)
Research Products
(14 results)
