Validation of regional river routing simulation using a global scale model

DOI

Bibliographic Information

Other Title
  • 全球スケールと領域スケールをシームレスにつなぐ河川流路網モデルの検証

Description

The purpose of this study is to construct a frame-work for seamless river routing simulation using a global river routing model, CaMa-Flood in regional area, Japan. Bankfull width, bank height and two-stage cross sectional shape of 8 rivers in Japan are extracted from MLIT (Ministry of Land, Infrastructure, Transport and Tourism) datasets and Google Map. Since such realistic cross-sectional properties of compound channels have not been considered in the global model, CaMa-Flood is modified. To incorporate those additional information in the calculation of discharge and flow depth.  Simulations are performed on 1/12 degree grid mesh. Result shows that the developed simulation framework marks significantly higher correlations and lower errors for both discharge and water level comparing to in-situ observations. Incorporating locally available geographical data into a global model will effectively improve skills of flood prediction within a seamless manner of simulations.

Journal

Details 詳細情報について

  • CRID
    1390282680688991360
  • NII Article ID
    130005482034
  • DOI
    10.11520/jshwr.27.0_100091
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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