2004年10月20∿21日の台風23号による豪雨災害の特徴

概要

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A heavy rainfall caused by typhoon No.0423 (Tokage, GLIDE : TC-2004-000109-JPN) and a stationary front occurred in Western Japan from October 20 to 21, 2004. The highest 1-hour precipitation in the last 25 years was recorded at 1 observatory, and the highest 24-hour precipitation in the last 25 years were recorded at 30 observatories based on the data of the Japan Meteorological Agency. In this heavy rainfall, 96 persons were killed, 1,155 houses destroyed (ruined and half-ruined), and about 62,528 houses inundated. This is the greatest degree of human damage by heavy rainfall in Japan since the "Heavy rainfall on July 1983" (number of deaths : 117). People died in 16 prefectures, including 7 in Gifu prefecture, 15 in Kyoto, 26 in Hyogo, 11 in Kagawa, and 8 in Kochi. The deaths of 31 persons were due to drowning, 28 due to sediment disaster. This is the largest number of drownings by heavy rainfall since the Nagasaki heavy rainfall disaster in July 1982. Moreover, 26 victims were killed by flood while driving or walking. Before this disaster, few persons died by this type cause in recent heavy rainfall disaster in Japan. It is difficult for people who are in transit to receive disaster information. In other words, they are vulnerable to disaster independent of age or health. It is necessary to investigate the method of protecting in transit persons from heavy rainfall disaster.
日本自然災害学会の論文
2005-02-28