Study on the Fast Predication of the Wind-Driven Current in the Sachon Bay

사천만에서 취송류의 신속예측에 관한 연구

  • 최석원 ;
  • 조규대 ;
  • 김동선
  • Published : 1999.06.01

Abstract

In order to fast predict the wind-driven current in a small bay, a convolution method in which the wind-driven current can be generated only wih the local wind is developed and applied in the Sachon Bay. The root mean square(rms) ratio defined as the ratio of the rms error to the rms speed is 0.37. The rms ratio is generally less than 0.2, except for all the mouths of Junju Bay and Namhae-do and in the region between Saryang Island and Sachon. The spatial average of the recover rate of kinetic energy(rrke) is 87%. Thus, the predicted wind-driven current by the convolution model is in a good agreement with the computed one by the numerical model. The raio of the difference between observed residual current (Vr) and predicted wind-driven current (Vc) to a residual current, that is, (Vr-Vc)/Vr shows 56%, 62% at 2 moorings in the Sachon Bay.

Keywords

convolution method;fast prediction;rms ratio;Sachon Bay;wind-driven current

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