流域地形と降雨の時空間パターンを考慮した洪水発生ポテンシャルの評価

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書誌事項

タイトル別名
  • Assessment of Flood Potential in River Basins in Japan Considering Basin Geography and Rainfall Pattern

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抄録

The objective of this study is to evaluate the risk of floods by modeling rainfall patterns during recent disaster events and applying them to various river basins with different basin geography using a distributed hydrological model. As the first attempt, we tried to change the incoming rainfall patterns by rotate its directions from 90 degrees to 270 degrees from the original rainfall direction. Then, we detected the worst cases of flood hazards considering rainfall patterns and basin geography in several major river basins in Japan. As the second attempt, the relationship between specific river flow and basin shape, gradient, and channel density of the 109 class-A river systems in Japan was investigated. As a result, a weak correlation was found between the specific peak flow and the designed high-water flow with the basin shape, but no clear relationship was found with the annual average flow. Furthermore, it was found that the larger the slope of the basin, the larger the flow rate. However, no clear relationship was found between the water density and the specific flow rate.

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詳細情報 詳細情報について

  • CRID
    1050010293078400128
  • NII論文ID
    120007192879
  • NII書誌ID
    AN00027784
  • HANDLE
    2433/268170
  • ISSN
    0386412X
  • 本文言語コード
    ja
  • 資料種別
    departmental bulletin paper
  • データソース種別
    • IRDB
    • CiNii Articles

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