| Seasonal Variations and Characteristics of the Stratification Depth and Strength in the Seas Near the Korea Peninsular using the Relative Potential Energy Anomaly |
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Chang-Bong Cho, Young-Gyu Kim, Kyung-Il Chang |
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| 한반도 근해의 상대적 위치에너지 편차 변화를 이용한 성층화의 특성과 계절별 변화에 대한 연구 |
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조창봉, 김영규, 장경일 |
1국방과학연구소
2서울대학교 |
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| Abstract |
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In this paper, we have proposed a method for quantization of the stratification strength in the sea water and analysing the distributions of the maximum stratification depths calculated by the method at the seas near the Korean peninsular. For calculating the stratification strength, modified and applied the potential energy anomaly formular which was suggested by Simpson in 1977. The data had been collected by NFRDI from 1971 to 2008 were used to determine the maximum vertical density gradient depth and the relative potential energy anomaly at that depth. In the East Sea, the stratification depth has become deepened about 20m in February and April since 1971. In Yellow-South Sea, the maximum density gradient depth has been deepened about 10m only in December during the same period and the difference of the stratification depth between summer and winter has been enlarged. These trends of variation of stratification strength and depth near the Korean peninsular should be investigated more carefully and continuously. And the results of these studies could be adopted for the more efficient operation of underwater weapon and detection systems. |
| Key Words:
Stratification, Relative Potential Energy Anomaly, Maximum Vertical Density Gradient Depth |
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