2000年鳥取県西部地震の断層面上の応力変化と断層近傍の強震動
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概要
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rights: 社団法人日本建築学会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110006794816/The stress change history of the 2000 Tottori-ken-seibu earthquake is determined using the strong motion records. The result shows large stress drop in the upper central part of the fault. Negative stress drop is observed at the NW and SE sides of the fault at the depth of between 5 and 10 km. The slip distributions agree with those obtained from kinematic models. The stress-time histories in the high stress drop zones show predominantly monotonic stress drop. The result indicates that relatively high peak velocities observed at the stations near the fault are due to the high stress drop and the directivity effect. The ground motion inferred from the obtained stress change shows high peak velocity around the source area.
- 2008-07-30