| Project/Area Number |
21310116
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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 |
KANDA Wataru 東京工業大学, 火山流体研究センター, 准教授 (00301755)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Takeshi 北海道大学, 理学(系)研究科(研究院), 准教授 (70283588)
YAKIWARA Hiroshi 鹿児島大学, 理工学研究科, 助教 (60295235)
KASAYA Takafumi 独立行政法人海洋研究開発機構, 地球内部 変動研究センター, 技術研究副主任 (90373456)
OGAWA Yasuo 東京工業大学, 火山流体研究センター, 教授 (10334525)
KOYAMA Takao 東京大学, 地震研究所, 助教 (00359192)
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| Co-Investigator(Renkei-kenkyūsha) |
UTSUGI Mitsuru 京都大学, 理学研究科, 助教 (10372559)
ICHIHARA Hiroshi 独立行政法人海洋研究開発機構, 地球内部変動研究センター, 技術研究副主任 (90553074)
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| Project Period (FY) |
2009 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2010: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2009: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | マグマ溜り / 海底観測 / 電気伝導度 / 火山噴火 / 姶良カルデラ / マグマ溜まり |
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| Research Abstract |
In order to clarify the corresponding electrical resistivity structure to the assumed magma reservoir and to the supply paths to Sakurajima volcano and to the submarine volcano, we have conducted the magnetotelluric (MT) measurement mainly along two traverse lines in the direction of WNW-ESE crossing the Aira caldera since 2009. The MT data at 44 sites in total, including 16 seafloor sites, were obtained for the last four years. As a result of 2-D and3-D inversions, a high conductive region extending from the lower crust along the Kagoshima graben was found from the central part of the caldera to the eastern part. This conductor is possibly the structure relevant to the magma supply system.
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