| Project/Area Number |
22310109
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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 |
Natural disaster science
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
OGAWA Yasuo 東京工業大学, 火山流体研究センター, 教授 (10334525)
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| Co-Investigator(Kenkyū-buntansha) |
KANDA Wataru 東京工業大学, 火山流体研究センター, 准教授 (00301755)
NOGAMI Kenji 東京工業大学, 火山流体研究センター, 教授 (70251676)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2010: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 火山噴火 / 電磁気モニタリング / 水蒸気爆発 / 電磁誘導 / 全磁力 / 火山ガス / 噴火予知 / モニタリング |
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| Research Abstract |
We have developed a monitoring system for phreatic eruption environment (1) with electromagnetic induction method, which images resistivity model and (2) with magnetic total force stations, which detects the temporal changes of temperature at depth. Regarding the electromagnetic induction methods, we developed a coincident loop system, where transmitting and receiving loops with radius of 30m are located at the same location. Regarding the magnetic total forces, our measurements of four stations at Kusatsu-Shirane volcano found decreasing the magnetization of the volcanic edifice, which means that the volcanic body is cooling, although surface thermal areas are expanding at the Yugama crater. We interpret that the volcano is effectively releasing heat from the surface, but the volcano at 500m depth is cooling.
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