Afterslip distribution of large earthquakes with viscoelastic and poroelastic responses
| Project/Area Number |
20540404
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Chiba University |
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Principal Investigator |
SATO Toshinori Chiba University, 大学院・理学研究科, 教授 (70222015)
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| Co-Investigator(Renkei-kenkyūsha) |
FUKAHATA Yukitoshi 京都大学, 防災研究所, 准教授 (10313206)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 地震 / 地球変動予測 / 地殻変動 / 地震発生過程 / 粘性緩和 / 間隙弾性 |
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| Research Abstract |
We developed a new method for estimation of afterslip distribution with viscoelastic and poroelastic responses. We consider viscoelastic responses not only due to coseismic slip but also due to afterslip in the preceding intervals. Poroelastic responses are included in the model as difference between drain-undrain responses. Results of application to two earthquakes show that large different slip distributions are obtained between our new model and elastic only model. This means that viscoelasic and poroelasic responses are needed for analysis of afterslip distribution.
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Report
(4 results)
Research Products
(19 results)
