Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Numerical Experiment on the Drift Diffusion of Harmful Algal Bloom

유해적조생물의 이동·확산에 관한 수치실험

  • Seo, Ho-San (Interdisciplinary Program of Ocean Industrial Engineering, Pukyong National University) ;
  • Kim, Dong-Sun (Department of Ecological Engineering / Research Center for Ocean Industrial and Development(RCOID), Pukyong National University)
  • 서호산 (부경대학교 해양산업공학(협)) ;
  • 김동선 (부경대학교 생태공학과/해양산업개발연구소)
  • Received : 2014.03.31
  • Accepted : 2014.08.27
  • Published : 2014.08.31
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Abstract

To understand the drift-diffusion of HAB(Harmful Algal Bloom) in this paper, we used three-dimensional hydrodynamic model POM(Pringceton Ocean Model) and Lagrangian particle track module. First, the results of residual flow that considered tide, wind, temperature, salinity, and TWC(Tsushima Warm Current) effect was tend to northeast in the coastal area and the flow in the offshore region showed results similar to TWC. To understand of HAB's movement, released each area that southern Kamak bay(Case 1), Mijo coast(Case 2), and southern Mireukdo coast(Case 3) assumption that red tide occurred. The areas where the HAB occurs frequently. As a result of HAB occurred in southern Kamak Bay(Case 1), mainly drifts to Narodo coast and Yeoja bay that located on the west side. Case 2 was mainly drifts to Yokjido coast and Saryangdo coast Especially, HAB occurred in Mireukdo coast(Case 3) relatively many particles drift to eastward as the influence of the TWC.

본 연구는 한국 남해 연안에서 하계에 상습적으로 발생하는 유해적조생물의 이동과 확산에 관하여 파악하는 것이다. 먼저 3차원 해수유동모델(POM)을 이용하여 조석의 효과, 수온 염분, 바람 효과 및 쓰시마난류를 고려한 잔차류를 계산하였다. 잔차류에 의해 부유 이동하는 적조생물의 시간에 따른 공간적인 분포를 파악하기 위하여 국립수산과학원의 적조속보 자료를 이용하여 한국 남해안에서 유해적조의 최다 발생한 3개 지역 가막만(Case 1), 미조연안(Case 2), 미륵도연안(Case 3)을 선정하여 적조발생을 유형별로 수치실험을 하였다. 가막만 남부해역에서 적조가 발생한 경우(Case 1)는 발생지점으로부터 서쪽에 위치한 나로도주변해역과 여자만으로 주로 이동 확산하였다. 미조연안에서 적조가 발생한 경우(Case 2)는 발생해역의 북동측에 위치한 해역으로 입자들이 주로 이동하는 것으로 나타났다. 그리고 미륵도 주변해역에서 입자가 발생한 경우(Case 3)는 욕지도주변해역과 자란만-사량도 주변해역에서 가장 많이 분포하였다. 특히 Case 3의 경우 확산된 입자가 연구 해역의 남동쪽에서 북동향하여 진행하는 쓰시마 난류의 영향을 받아 거제도 남부와 동부해역에 분포하는 현상을 볼 수 있다.

Keywords

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