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Variation of Density Stratification due to Fresh Water Discharge in the Kwangyang Bay and Jinju Bay

광양만과 진주만 해역에서 담수 유입으로 인한 밀도성층 변화

Kang, Young-Seung;Chae, Yeong-Ki;Lee, Hyung-Rae
강영승;채영기;이형래

  • Received : 2008.12.16
  • Accepted : 2011.02.14
  • Published : 2011.02.28

Abstract

This study simulate three-dimensional ocean circulation patterns using the EFDC model in the Kwangyang Bay and Jinju Bay, considering tide, water temperature and salinity. The numerical model results were verified using observed data. The model results well reproduced the observed data. As a result, ocean circulation patterns in the study area show convergence and divergence in the middle area of Noryang waterway and Daebang waterway, the residual flow patterns show typical two-layer circulation. According to the change of the density stratification in the Kwangyang Bay and Jinju Bay, the effect of fresh water is dominant in study area. In the case of Jinju Bay, although it is strongly influenced by the Namgang fresh water, also it is affected by Seomjin River when there is no discharge by Namgang Dam. On the other hand, the stratification of the Kwangyang Bay is relatively enhanced by the discharge of Namgang Dam.

Keywords

density stratification;fresh water discharge;residual current;Kwangyang Bay and Jinju Bay

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