縁辺海海底地形データに対する潮高補正の適用

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書誌事項

タイトル別名
  • Impact of applying tidal correction to marginal-sea bathymetry dataset

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A method to convert the reference level of chart depths from the lowest tide level to the mean sea level was developed to improve the quality of bathymetry datasets of the East and South China seas. The conversion was made by referring to a newly compiled database of the offset value (Z0) derived from that listed in tide tables. Numerical simulations using the revised East China Sea bathymetry revealed that the depth correction lead to 40% reduction of the RMS difference between the predicted and observed M2 tidal amplitudes, mainly due to the changes at regions with shallow depths and large tidal range such as the Korean west coast and the Southwestern Yellow Sea. It was also found that the global bathymetry dataset GEBCO2019 uses chart depths without applying the correction and the mismatch between the zero level for the land and sea seems to have caused erroneous depths at intertidal zones.

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詳細情報 詳細情報について

  • CRID
    1390009224764894336
  • NII論文ID
    120006820072
  • NII書誌ID
    AA11459359
  • DOI
    10.15017/2740962
  • HANDLE
    2324/2740962
  • ISSN
    13455664
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • IRDB
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用可

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