Source characterization of short-period ground motion generation for construction of source model of wide-period-band strong motion prediction
Grant-in-Aid for Scientific Research (C)
|Allocation Type||Single-year Grants|
Natural disaster science
|Research Institution||Kyoto University|
IWATA Tomotaka Kyoto Univ., Disas.Prev.Res.Inst., Professor, 防災研究所, 教授 (80211762)
|Project Period (FY)
2003 – 2004
Completed(Fiscal Year 2004)
|Budget Amount *help
¥1,800,000 (Direct Cost : ¥1,800,000)
Fiscal Year 2004 : ¥800,000 (Direct Cost : ¥800,000)
Fiscal Year 2003 : ¥1,000,000 (Direct Cost : ¥1,000,000)
|Keywords||Strong ground motion prediction / Source inversion / Characterized source model / Dynamic source parameter / Stress drop / Asperity / In-Slab earthquake / interplate earthquake / 強震動予測|
The aim of this study is to improve parameters of the characterized source model for strong ground motion prediction. For the sake, the following subjects were studied.
1)Compiling kinematic source model
Resent destructive earthquake source models by strong motion data are compiled. I also obtain the kinematic source models of the 2002 Denali earthquake and the 2004 Chuetsu earthquakes. I also collected the source model of the 2003 Tokachi earthquake.
2)Estimation of stress parameters
I obtained spatio-temporal stress change on the fault plane using the kinematic source models and characterized the stress parameters on the fault of the inland-crustal, and interplate earthquakes. Stress parameters on and off the asperity is approximately 20MPa and 5MPa, respectively. And there is slightly depth dependence of stress parameters on the asperity.
3)Strong motion generation area (SMGA) of in-slab and interplate earthquakes.
I estimated strong motion generation area for the in-slab and interplate earthquakes and there is also depth dependence on the size of SMGA for the in-slab earthquakes
Although there is not so many number of events analyzed, these tendency of stress parameters on the asperity is useful for constructing the source model for wide-period-range strong motion prediction. These results are published as a paper in the following reference.
Research Products (11results)