Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Temporal Variations of Stratification-Destratification in the Deukryang Bay, Korea

하계 득량만의 연직성층해양의 시간적 변동 특성

  • 이병걸 (부산수산대학교 해양산업개발연구소) ;
  • 조규대 (부산수산대학교 해양학과)
  • Published : 1995.06.01
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Abstract

The Quantitative estimations of the stratification - destratification(SD) phenomena in Deukryang Bay, Korea have been carried out based on the data of wind speed, heat flux through the sea surface and tidal current amplitude. To find out the main factors causing SD, wv introduce the rate of energy balance of the surface heat flux, tidal and wind stirring proposed by Simpson and Hunter(1974). The calculated potential energy of three terms are compared, from which the energy of wind stirring effect was one order smaller than the heat flux and the tidal stirring. Using the results, we complement time integration of the potential energy with the several s values of 0.010~0.014 at interval 0.001 and with wind speeds of 1.5 and 2.0 times larger than observation values at land. It shows that the variation of SD phenomena in the bay mainly depended on tidal stirring and sea surface heating in summer if there is no exceptionally strong wind event like Typhoon. The stratification become to be foamed from about 5 July although the stratification a little decreases during the second spring tidal period of middle of July.

한국남해 연안에 위치한 득량만에 있어서 하계의 태양복사, 바람, 조류에 의한 해양의 연적성층 및 연적혼합현상의 시간적 변동특성을 밝히기 위한 연구를 수행하였따. 이를 위하여 27개 정점에서 관측된 수온, 염분, 밀도값을 분석하였고. Simpson과 Hunter(1974)가 제안한 위치에너지 개념을 도입한 에너지 방정식을 이용하여 태양복사, 바람, 조류에너지를 각각 계산하였다. 그 결과 하계 득량만 해양의 연직 성층 및 혼합현상은 태양복사에너지가 일정하다고 할때 바람보다는 조류에 의해 크게 좌우됨을 알 수 있었고, 조류에너지에 의한 수괴의 연직합에너지이여율 $epsilon$의 값은 약 0.010 ~ 0.014사이를 나타내고 있었다.

Keywords

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