The Effect Generated by Calculation Method of the Sea Bottom Displacement on Tsunami Estimation - Three-dimensional Sea Bottom Crustal Movement Analysis -

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  • 海底変位の計算方法が津波評価に与える影響～３次元海底地殻変動解析～

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The sea bottom displacement is computed by seismic ground motion analysis and the effect generated by ground displacement on tsunami estimation is examined,taking into account the time history of sea bottom displacement and Three-dimensional ground configuration. It is shown that the difference of final sea bottom displacement is up to 15% and the effect on maximum tsunami wave height is up to 20% when the heterogeneous ground configuration is considered. The effect of the time history of sea bottom displacement on maximum tsunami height remains in up to 10%.

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