Melt region structures beneath back-arc basin spreading centers
| Project/Area Number |
21244070
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | Kobe University |
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Principal Investigator |
SEAMA Nobukazu 神戸大学, 大学院・理学研究科, 教授 (30270862)
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| Co-Investigator(Kenkyū-buntansha) |
NOGI Yoshifumi 国立極地研究所, 研究教育系, 准教授 (90280536)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKAKUKI Tomoeki 広島大学, 大学院・理学研究科, 助教 (10263667)
TAKEI Yasuko 東京大学, 地震研究所, 准教授 (30323653)
MATSUNO Tetsuo 神戸大学, 大学院・理学研究科, 学術研究員 (80512508)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥48,620,000 (Direct Cost: ¥37,400,000、Indirect Cost: ¥11,220,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2010: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2009: ¥43,810,000 (Direct Cost: ¥33,700,000、Indirect Cost: ¥10,110,000)
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| Keywords | 海洋底地球科学 / 海底拡大系 / 背弧海盆 / 上部マントル / 海底長期観測 |
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| Research Abstract |
Investigations on melt region structures beneath spreading axes are a key to understand back-arc spreading system. We developed a compact ocean bottom magnetometer(OBM), which was designed to be attached to US ocean bottom seismograph(OBS); that became first ocean bottom seismograph and magnetometer(OBSM) in the world achieved by an international cooperation. We carried out one year ocean bottom observation near the Eastern Lau spreading axis using the instruments. Marine magnetotelluric analysis using ocean bottom data allows us to image the resistivity structures of the upper mantle beneath the spreading axis, which were compared to identify differences in melt region structures and to understand the cause of the differences.
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Report
(4 results)
Research Products
(32 results)
