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本文根据1992年春季东海黑潮锋面涡的专题调查资料,分析了黑潮锋面涡的基本形态以及它在陆架-黑潮水相互交换中的作用。其主要结果是:(1)在30°N以南黑潮锋面涡呈折叠波状,其倒卷暖水舌的厚度约50m,冷中心呈带状;(2)在锋面涡的卷挟下,陆架混合水被卷入黑潮中;(3)锋面涡经过的水域生物生产力明显增高。文中还比较了1988、1989和1992年三次春季观测到的屋久岛西侧海域的锋面涡旋形态,认为这里的锋面涡约以30cm/s;速度随黑潮东移,锋面涡舌已发展成暖丝结构。当暖丝西行抵陆架边缘后,它可能直接北上归入对马暖流,也可能在九州西侧海区演变成暖环。
Based on the survey data of the frontal vortex of the Kuroshio in the East China Sea in the spring of 1992, this paper analyzes the basic form of the frontal vortex of the Kuroshio and its role in the exchange of shelf-Kuroshio water. The main results are as follows: (1) In the south of 30 ° N, the frontal vortex of the Kuroshio was folded and undulated, the thickness of the reheated warm water tongue was about 50m, and the cold center was banded; (2) The shelf-mixed water is involved in the Kuroshio. (3) The biological productivity of frontal vortex is significantly increased. The paper also compares the frontal vortices of the west side of Yakushima observed in the spring of 1988, 1989 and 1992, and considers that the frontal vortex is about 30cm / s in this spring. When the velocity moves eastward with the Kuroshio, the frontal vortex tongue has developed into Warm silk structure. When the warm west travels to the edge of the shelf, it may be directly northward into the warm horse, or it may evolve into a warm ring in the western waters of Kyushu.