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Understanding the Flow Properties by a Numerical Modeling in the South Sea of Korea

수치모델을 이용한 한국 남해의 유동특성 이해

  • Bae, Sang-Wan (Ocean System Development, Korea Environmental Technology Consulting Hotline) ;
  • Kim, Dong-Sun (Research Center for Ocean Industrial and Development(RCOID), Pukyong National University)
  • 배상완 (한국종합환경연구소) ;
  • 김동선 (부경대학교 해양산업개발연구소)
  • Received : 2012.05.03
  • Accepted : 2012.08.24
  • Published : 2012.08.31

Abstract

In order to understand the flow properties of the South Sea of Korea, tidal currents, wind-driven currents, density-driven currents and residual flows were investigated by using 3-dimensional numerical model(POM). In offshore regions, tide-induced residual current tends to flow eastward during the spring tide and westward during the neap tide. Total residual flow is irregular due to the bottom topography in the coastal area. The density-driven currents in the coastal area showed to be relatively weak, with little seasonal differences. The special tendency was apparent in the open sea. That is, the flow in the offshore regions showed results similar to that of the Tsushima current. The wind-driven currents in the coastal area showed to be much stronger than in offshore regions. Vertically, the flow of the surface layer was much stronger than that of the bottom layer. Through these results, material transport and diffusion in the south coast, as a basis for predicting the spread of use is expected to be available.

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