Estimation of frictional properties of the Yaeyama slow slip source region and prediction of the recurrent events by assimilating GPS data
| Project/Area Number |
21340127
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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 | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MITSUI Noa 名古屋大学, 環境学研究科, 研究員 (20435837)
堀 高峰 海洋研究開発機構, 地球内部変動研究センター, サブリーダー (00359176)
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| Co-Investigator(Renkei-kenkyūsha) |
KATO Teruyuki 東京大学, 地震研究所, 教授 (80134633)
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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 |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2009: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Keywords | 地殻変動 / 海底変動 / スローイベント / 国際研究者交流 アメリカ合衆国 / 測地インバージョン / GPS / スロースリップ / データ同化 / 摩擦特性 / 八重山地方 / アジョイント法 / SIS |
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| Research Abstract |
We installed four permanent GPS stations on the southern most Ryukyu Islandsto understand the generation mechanism of slow slip events there. GPS time series indicated that the slip did not reveal any propagation. We then developed an inversion code that can infer the temporal evolution of fault geometries. Numerical tests showed good results. In addition we developed an adjoint code to infer the frictional parameters of a plate boundary. Numerical tests showed good results, too.
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Report
(4 results)
Research Products
(16 results)
