| Project/Area Number |
22403005
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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 | 海外学術 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Masayuki 高知工科大学, 環境学研究科, 准教授 (30368857)
FURUMOTO Muneyoshi 名古屋大学, 環境学研究科, 教授 (80109264)
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| Co-Investigator(Renkei-kenkyūsha) |
ISHIHARA Yoshiaki 独立行政法人産業技術総合研究所, 情報技術研究部門, 研究員 (80400232)
FUJITA Kazuo 独立行政法人宇宙航空研究開発機構, 研究開発本部未踏技術研究センター, 主幹研究員 (90281584)
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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 |
¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Keywords | はやぶさ / インフラサウンド / 地震動 / 大気-地表面カップリング / エネルギー伝搬係数 / 大気―地表面カップリング |
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| Research Abstract |
We carried out array observations with infrasound/seismic and optical sensors and obtained those records at the Hayabusa reentry in Woomera, Australia. We estimated the source location of shockwaves generated by the reentry from the analyses of those records. The estimated overpressure values of the shockwaves are twice larger than those from a traditional theory, indicating that there are some problems on the assumptions of the traditional theory. We define a transfer function between the pressure perturbations and ground motions, and quantify a coupling process between atmosphere and ground surface.
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