On the seasonal variation of transport through the Tokara Strait.

  • Greatbatch Richard J.
    Department of Physics and Ocean Science Centre, Memorial University of Newfoundland
  • Goulding Allan
    Department of Physics and Ocean Science Centre, Memorial University of Newfoundland

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Other Title
  • トカラ海峡を通過する流量の季節変動
  • トカラ海峡を通過する流量の季節変動〔英文〕
  • トカラ カイキョウ オ ツウカスル リュウリョウ ノ キセツ ヘンドウ エイブ

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Abstract

Results are described from a limited area barotropic model of the North Pacific with 1/3°×1/3° resolution and bounded by latitudes 10°N and 50°N and longitudes 120°E and 160°E. The model employs dynamics linearised about a state of rest and incorporates realistic bottom topography. It is driven by the seasonally varying part of the Hellerman and Rosenstein wind stress field and by inflow along the northern and eastern boundaries specified from a 1°×1° version of the model applied to the whole North Pacific. The model-calculated transport variations through the Tokara Strait are similar to those of the observed seasonal sea level differences across the Strait, although the model appears to underestimate the amplitude of the signal by a factor of at least 2. The inclusion of realistic bottom topography is shown to be crucial in determining the model response.

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