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HISTORICAL STUDY OF CHANGES IN STORM SURGE DISASTERS IN THE OSAKA AREA

Yoshito Tsuchiya, Yoshiaki Kawata

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Abstract

Changes in storm surge disasters in the Osaka area were studied on the basis of old documents in which descriptions of disasters have been given for about 1200 years. Storm surge disasters have occurred 53 times in the Osaka area since 700, seven of them are major ones that killed 1000 or more people. The risk to life of these disasters is of the order of 0.001. This value is the potential risk when no countermeasures are taken against storm surge disasters. After the Muroto Typhoon (1934) risk to life in storm surge disasters has been reduced remarkably by the soft and hard countermeasures taken. The mean interval between major storm surge disasters is about 150 years, which corresponds nearly to the return period for the storm surge that accompanied the Muroto Typhoon.

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What this paper is about

Changes in storm surge disasters in the Osaka area were studied on the basis of old documents in which descriptions of disasters have been given for about 1200 years. Storm surge disasters have occurred 53 times in the Osaka area since 700, seven of them are major ones that killed 1000 or more people. The risk to life of these disasters is of the order of 0.001. This value is the potential risk when no countermeasures are taken against storm surge disasters. After the Muroto Typhoon (1934) risk to life in storm surge disasters has been reduced remarkably by the soft and hard countermeasures taken. The mean interval between major storm surge disasters is about 150 years, which corresponds nearly to the return period for the storm surge that accompanied the Muroto Typhoon.

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Available abstract

Changes in storm surge disasters in the Osaka area were studied on the basis of old documents in which descriptions of disasters have been given for about 1200 years. Storm surge disasters have occurred 53 times in the Osaka area since 700, seven of them are major ones that killed 1000 or more people. The risk to life of these disasters is of the order of 0.001. This value is the potential risk when no countermeasures are taken against storm surge disasters. After the Muroto Typhoon (1934) risk to life in storm surge disasters has been reduced remarkably by the soft and hard countermeasures taken. The mean interval between major storm surge disasters is about 150 years, which corresponds nearly to the return period for the storm surge that accompanied the Muroto Typhoon.

Key concepts: Storm surge, Surge, Storm, Geology, Meteorology, Environmental science, Climatology, Seismology

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HISTORICAL STUDY OF CHANGES IN STORM SURGE DISASTERS IN THE OSAKA AREA — Research Paper | ScholarLens