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| 南黄海暖流水附近冷水块的分析研究 |
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蓝淑芳, 顾传宬, 傅秉照
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中国科学院海洋研究所
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| 摘要: |
| 在南黄海东南部，呈现高温、高盐特征的南黄海暖流水(以下简称暖流水)终年入侵。冬半年，暖流水自济州岛东南沿西北方向大量涌入南黄海，并盘踞其大部海区，因此，该海域水文要素场(温度、盐度、密度)等值线的分布大多呈舌形。但在济州岛西北，朝鲜半岛西南海域外的水文状况则呈现低温、高盐特征。夏半年，黄海冷水团与南黄海沿岸流强盛，暖流水势力锐减，南黄海温、盐度等值线的分布不再大片地呈现明显舌形，舌状分布仅出现在34°N以南，124°E以东海区。此时，在暖流水附近，济州海峡西北部，朝鲜半岛西南海岸外，经常出现一个具有高盐特性的冷水块。此冷水块的出现与南黄海暖流水的变异有关，并且存在时间较长，因此，其温、盐性质构成了南黄海水文特征的一部分。本文试图分析研究这一冷水块的基本水文特征并对其成因提出初步看法。
本文主要引用1976-1979年在南黄海海域调查的部分观测资料以及朝鲜1934-1938年的近海观测资料。 |
| 关键词: 南黄海暖流水 冷水块 |
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| 基金项目:中国科学院海洋研究所调查研究报告第1228号 |
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| A STUDY OF COLD WATER BODY NEAR THE SOUTHERN YELLOW SEA WARM CURRENT WATER |
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Lan Shufang, Gu Chuancheng, Fu Bingzhao
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| In summer a?high salinity Cold Wate Body, sometimes in the form of a cold water ring，appears at the upper water layer near the Southern Yellow Sea Warm Current Water.It measures about 90 km east-west and about 166 km south-north. In this paper the observational data for the years 1976-1979 obtained by China and Korea，and the “Oceanographical Charts of the Adjacent Seas of Ty?sen” for the years 1934-1938are used. Its monthly, yearly changes and its circulation are analysed and discussed. The result of the dynamic calculation shows that the Co1d Water Body is accompanied by a closed counterclockwise density circulation. At the end of the paper a suggestion on the cause for the formation of the Cold Water Body is presented. It may 1be a cut-off phenomenon of the cold water mass near the Southern Yellow Sea Warm Current Water. |
| Key words: COLD WATER BODY THE SOUTHERN YELLOW SEA WARM CURRENT WATER |
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