Instantaneous detection of mega earthquakes by precise gravity field measurement
| 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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Report
(3 results)
Research Products
(76 results)
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[Journal Article] Fault slip distribution of the 2014 Iquique, Chile earthquake estimated from ocean-wide tsunami waveforms and GPS data2015
Author(s)
Gusman, A. R., Murotani, S., Satake, K., Heidarzadeh, M., Gunawan, E., Watada, S. and Schurr, B.
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Journal Title
Geophysical Research Letters
Volume: 42
Pages: 1053-1060
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] 重力波天文学入門2017
Author(s)
Masaki Ando
Organizer
第23回 ICEPPシンポジウム
Place of Presentation
岳見山荘 (長野県・白馬村)
Year and Date
2017-02-19
Related Report
Invited
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[Presentation] ねじれ振り子型重力波検出器TOBAの開発(1)2016
Author(s)
下田智文, 有冨尚紀, 桑原祐也, 道村唯太, 正田亜八香, 麻生洋一, 高橋竜太 郎, 山元一広, 安東正樹
Organizer
日本物理学会 第71回年次大会
Place of Presentation
東北学院大学泉キャンパス（宮城県・仙台市）
Year and Date
2016-03-21
Related Report
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[Presentation] ねじれ振り子型重力波検出器TOBAの開発 (2)2016
Author(s)
有冨尚紀, 下田智文, 桑原祐也, 道村唯太, 正田亜八香, 麻生洋一, 高橋竜太 郎, 山元一広, 安東正樹
Organizer
日本物理学会 第71回年次大会
Place of Presentation
東北学院大学泉キャンパス（宮城県・仙台市）
Year and Date
2016-03-21
Related Report
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[Presentation] Fault slip distribution of the 2014 Iquique, Chile, earthquake estimated from ocean-wide tsunami waveforms and GPS data2015
Author(s)
Gusman, A. R., Murotani, S., Satake, K., Heidarzadeh, M., Gunawan, E., Watada, S. and Schurr, B
Organizer
日本地球惑星連合大会
Place of Presentation
幕張メッセ（千葉県・千葉市)
Year and Date
2015-05-25
Related Report
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