防災情報による津波災害の人的被害軽減に関する実証的研究

概要

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The expectation of non-structural measures in natural disaster prevention, such as disaster information, rises recently. Then the concern with the quantitative effect of non-structural measures has been growing. This study attempts to evaluate the number of persons who could survive by the disaster information, such as warning and hazard map. The survey is conducted based on the records of the Nihonkai-chubu earthquake tsunami in 1983 (case A) and the Hokkaido-nanseioki earthquake tsunami in 1993 (case B). As a result of the flow-chart analysis, in the cases of A and B, they were 23 persons (23% of the all death persons) and 12 persons (16%). The number of persons who could not survive if they evacuated shortly after the earthquake were 17 (17%)in the case A and 47 (64%) in the case B. It is concluded that the disaster informationis a valid disaster prevention method for mitigation in tsunami human damage.However it is not a perfect method. It is important that some disaster preventionmethods will be combined.
2004-11-30