学会誌「自然災害科学」

平成5年台風11号による東京の水害の特徴

Characteristics of the Flood Disaster in Tokyo due to the Typhoon 9311

佐藤 照子*・岸井 徳雄*

Teruko SATO* and Tokuo KISHII*

Abstract

Tokyo, the Metropolis of Japan, frequently has suffered from flood disasters, according to urbanization, since late 1950's. The heavy rainfall due to the Typhoon 931l on August, of which the daily precipitation was 234.5mm, caused damages in Tokyo. The flood disaster caused by the Typhoon were investigated.

The number of houses inundated reached 5,191, but its magnitude reduced to one twentieth of that caused by the Typhoon 6604 in 1966. Two hundred million people were affected by the damage of public transportation systems, being attacked weak points of preparedness for flooding: extra rainwater incidentally coming from outside of disaster stricken area and rainwater flowing into construction fields under the ground, resulted in the suspension of train and subway service.

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