| Project/Area Number |
15K13559
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
watada shingo 東京大学, 地震研究所, 助教 (30301112)
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| Co-Investigator(Kenkyū-buntansha) |
亀 伸樹 東京大学, 地震研究所, 准教授 (90304724)
新谷 昌人 東京大学, 地震研究所, 教授 (30272503)
今西 祐一 東京大学, 地震研究所, 准教授 (30260516)
安東 正樹 東京大学, 大学院理学系研究科(理学部), 准教授 (90313197)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 重力 / 地震即時検知 / 重力測定 / 超伝導重力計 / 広帯域地震計 / 傾斜計 / 重力変化 / 巨大地震 / 巨大地震即時検知 / 2011東北地震 / 重力場変動 / 高感度重力計測 / 重力歪 / 地震発生即時検知 / 高精度重力場変動計測 / 東北沖地震 / 地震計 / 重力計 / 重力歪計 |
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| Outline of Final Research Achievements |
We have not detected the coseismic gravity perturbation before the arrival of seismic waves. The signal amplitude of theoretical signal waveforms based on a 2011 Tohoku earthquake source model is expected to be larger than the noise amplitude of the observed data. Since all of multi-component array observation of gravimeters, seismometers and tiltmeters failed to detect signals, we start reconsider the observation problem of gravity measurements with the instruments on the ground.
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