Temporal sequence analysis of tsunami complex disaster in coastal cities

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In this study two types of three dimensional numerical analysis code for tsunami disasters have been developed. One is for predicting the effect on water quality in rivers exposed to a tsunami flow. The damage to water purification plants due to a tsunami has been estimated by applying the code to Yodo River in Osaka. The other one predicts the behavior of a flapgate type breakwater during a huge tsunami ; its validity has been verified by comparing with experiments. Moreover the effectiveness of the flapgate type breakwater has been confirmed by applying the code to simulate a real-scale scenario.