AN ESTIMATION METHOD OF THE FLOOD DEPTH DISTRIBUTION OF WIDE AREA USING THE OPEN DATA MAINTAINED BY THE WHOLE COUNTRY SCALE IN JAPAN

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  • 全国規模で整備されているオープンデータを用いて広域かつ詳細な浸水深分布を作成する内水解析モデル

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A simplified inundation estimation method was developed capable of applying to a rather wide area such as 50 km x 45 km. The method calculates inundation depths by combining use of a quasi linear storage model and a 2-D ground flow model, and then the results are distributed onto a details-scale ground altitude model utilizing the open data available from Japanese ministries. The method showed a good reproduction for the flood by typhoon 1411 Halong in the downstream catchments of the Yoshino and Katuura Rivers, the eastern part of Tokushima, Japan.

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