2004.7.13豪雨による中之島町市街地の被害と洪水流の流下様式

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タイトル別名
  • 2004 7 13 ゴウウ ニ ヨル ナカノシママチ シガイチ ノ ヒガイ ト コウズイリュウ ノ リュウカ ヨウシキ
  • Flood disaster and inundation processes by heavy rainfall on 13 July 2004, in the central city area of Nakanoshima Town, Niigata Prefecture, central Japan.

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The central city area of Nakanoshima Town, Niigata Prefecture was flooded by the rapid levee breach of the Kariyata River on 13 July 2004, which caused damages to many houses. Main flood streams flowed into the central city area, and changed the flow pass westward (clockwise) due to the presence of natural levee high. House damages of the central city area were concentrated approximately 250m around the point of levee breach. The damages were conspicuously occurred in vacant lots and/or streets which became passes of the flows with a hydraulic bore. Locality, house damages were reduced probably by rubbish and grove belts that contributed to reduction of the flow energy. Some house damages were observed 400m from the levee breach that may be caused by a reconcentration of streams.

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