| Project/Area Number |
21340124
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
WATADA Shingo 東京大学, 地震研究所, 助教 (30301112)
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| Co-Investigator(Kenkyū-buntansha) |
MORITA Yuichi 東京大学, 地震研究所, 教授 (30220073)
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| Co-Investigator(Renkei-kenkyūsha) |
OHMINATO Takao 東京大学, 地震研究所, 准教授 (70322039)
FUJITA Eisuke 防災科学技術研究所, 地震・火山防災研究ユニット, 主任研究員 (30450258)
ICHIHARA Mie 東京大学, 地震研究所, 准教授 (00376625)
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| Project Period (FY) |
2009-04-01 – 2013-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2009: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
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| Keywords | 火山現象 / 気圧波 / カルデラ陥没 / 地殻変動 / 伊豆大島 / カルデラ形成 / ピナツボ火山噴火 / 火山から発生する大気波動 / 火山から発生する音波 / 火山噴火による大気波動 / 火山から発生する重力波 / 火山噴火 |
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| Research Abstract |
We installed two micro barometerers in the Izu-Oshima volcano Island, one at Mihara-nishi and one at Noma Mabushi each equipped with a Tekelec MB2005 sensor. We published a paper on the long-period harmonic ground motion with periods of 270 and 230 sec. We have concluded the the harmonic ground motion resulted from the resonant oscillation between the solid Earth seismic surface waves and the atmospheric acoustic waves. In 2011 January Shinmoe-dake violently erupted and sonic booms from the eruption caused some damage to the building glass windows. We started temporal infrasound observation at 4 sites ( ERI volcano observatory, Kishishima-office of Kishishima-city, Eboshi observation point, Ohhata observation point).
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