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本文通过对东海北部气旋涡区夏半年水文结构的分析得出:(1)本海区愠、盐度较大的逐月变化和逆转结构长期存在是夏半年的主要水文特征;(2)夏半年平均余流分布揭示了在本海区中层(10—50m层)存在着一个气旋涡,该涡旋区内伴有10~(-4)—10~(-3)cm/s量级的垂直运动。黄海沿岸流的强弱和黄海暖流流轴的移动以及海底地形对气旋涡的变化和位置的变动有密切的关系。
Through the analysis of the hydrological structure of the cyclone vortex in the northern East China Sea in the past half year, this paper draws the following conclusions: (1) The monthly hydrological changes with large salinities and the long-term existence of the reversed structure are the main hydrological features in the summer half year; (2) The mean residual current distribution reveals that there is a cyclone vortex in the middle layer of this sea area (10-50 m layer) with a vertical movement of 10 -4 cm -3 to 10 -3 cm 3 / s . The strength of the Yellow Sea coast flow and the movement of the Yellow Sea warm current flow axis and the seafloor topography are closely related to the changes of the vortex vortex and the location changes.