| Project/Area Number |
24654145
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Nagoya University |
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Principal Investigator |
YAMAOKA Koshun 名古屋大学, 環境学研究科, 教授 (70183118)
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| Co-Investigator(Renkei-kenkyūsha) |
渡辺 俊樹 名古屋大学環境学, 研究科, 准教授 (50210935)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 観測手法 / 震源装置 / 地震波伝播変動 / 孔内観測 / 自由落下 / モニタリング / 地震波速度 / 地下モニタリング |
|---|
| Research Abstract |
A seismic source for long-term monitoring of propagation property by deploying in deep-borehole and seafloor are designed. We produced trial models for such a seismic source to test the feasibility of our conceptual design. The difficult requirement in borehole and seafloor environment is low-power consumption, i.e. 50watts. We developed a model with falling mass in a cylinder body to produce single-force, which is suitable to produce low-frequency signal with small body. Experiments using trial model shows that falling-mass source works well but falling trajectory varies substantially due to friction of mass and mass guide. This requires the monitoring of the mass falling.
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