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东海黑潮流速剖面速度分布是黑潮研究中的基本问题.本文基于1955~2001年东海G-PN断面水文资料,在合理数据预处理的基础上,采用动力高度法计算了垂直于断面方向的流速分布.通过对计算结果的归纳分析,详细给出了东海黑潮主段典型的流况分布形式,以及多核结构的尺度估计、特征分析和流核位置时空变化,以进一步研究东海黑潮的变异.主要结果表明,(1)东海黑潮流轴段存在单核、双核、三核或更多核结构等基本流形态.(2)东海黑潮流结构有较显著的时间变化.(3)流结构和季节紧密相关,流核数在秋季偏多,且多核结构多出现在秋季.
Based on the hydrological data of the G-PN section in the East China Sea from 1955 to 2001, based on the reasonable data preprocessing, the velocity distribution of the Kuroshio current velocity profile in the East China Sea is calculated using the dynamic height method Through the analysis of the calculation results, the typical distribution of the flow pattern in the main section of the East China Sea Kuroshio is given in detail, as well as the scale estimation, feature analysis and spatio-temporal variations of the flow core position in the multi-core structure of the Kuroshio to further study the Kuroshio The main results show that: (1) there are single-core, dual-core, triple-core or more nuclear flow structures in the axial section of the Kuroshio current in the East China Sea. (2) The Kuroshio current in the East China Sea has a significant temporal change. (3) The structure is closely related to the seasons. The number of stream nuclei is much higher in the autumn, and the multicomponent structure appears more in autumn.