STUDY ON SUPPORTING EVACUATION DECISIONS FOR PARKED RAILWAY CARS, ETC. USING FORECAST DATA FROM TODAY'S EARTH-JAPAN

Abstract

 We investigated the feasibility of using a flood prediction method that takes into account the runoff and downstream process of rainfall from Today's Earth-Japan to make decisions about evacuating trains parked in a rail depot before flooding occurs. In this study, we verified the accuracy of water levels at water level observation stations near rail depots when using Today's Earth-Japan for 111 past flooding cases. The results showed good capture rates and oversight rates. In terms of lead time, a lead time of more than one day was secured at more than 90% of locations during Typhoon Hagibis in 2019, when flooding occurred.