Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Characteristics of Eddy Diffusion in the Southwest Coastal Zone of Korea

남해 서부 연안해역의 난류 확산 특성

  • Yang Ho Choi (West Sea Fisheries Research Institute, NIFS) ;
  • Mi Jin Lee (Jeollanamdo Ocean & Fisheries Science Institute) ;
  • Myong Sun Lee (Mokpo Regional Office of Oceans and Fisheries)
  • 최양호 (국립수산과학원 서해수산연구소) ;
  • 이미진 (전라남도해양수산과학원) ;
  • 이명선 (목포지방해양수산청)
  • Received : 2024.07.09
  • Accepted : 2024.08.06
  • Published : 2024.08.31
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Abstract

Seawater movement analyses and dye diffusion experiments were conducted to understand the characteristics of eddy diffusion in the southwest coastal zone of Korea. The findings indicate that pollutants entering the study area were most influenced by tidal currents and showed temporal and spatial variations according to the turbulent characteristics of the tidal current. Pollutants entering the study area are likely to travel a distance of approximately 2 km (within 1 h) following the direction of the tidal currents and show a spreading distance (diameter of the diffusion area) of within 10% of the travel distance (within 200 m). The dispersion of the diffusion area is expected to increase in proportion to the elapsed time raised to a power of 1.19 to 1.23. The results are expected to provide a basis for using the eddy diffusion coefficient as a temporally variable value (previously assumed to be a constant based on empirical data), thereby contributing to improving the predictive accuracy of ocean diffusion models.

Keywords

Acknowledgement

이 논문은 2024년 국립수산과학원 수산과학연구사업(R2024009) 지원으로 수행된 연구입니다.

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