137°E经向断面上的黑潮与黑潮逆流  

Kuroshio and Its Counter Current Longitudinal Section at 137°E

作　　者：孙湘平[1,2] 

机构地区：[1]国家海洋局地球流体力学和数值模拟重点实验室 [2]国家海洋局第一海洋研究所,青岛,266003

出　　处：《黄渤海海洋》1999年第3期1-9,共9页Journal of Oceanography of Huanghai & Bohai Seas

摘　　要：根据 １３７° Ｅ 断面 １９６７～１９９５ 年冬、夏季的温、盐资料，计算和分析该断面的地转流。主要结果是：（１） 黑潮是流速很强且较稳定的单支海流，没有多支现象；黑潮逆流则不同，有时为单支，有时为２ 支甚至３ 支出现，带有多支性成份；（２） 多年平均而言，该断面上３１° Ｎ 为黑潮与黑潮逆流的分界线。冬季，黑潮主要出现在３１°～３３° Ｎ 之间，黑潮逆流主要出现在２９°～３０° Ｎ之间；夏季，黑潮主要出现在３１°～３４° Ｎ 之间，黑潮逆流主要出现在 ２８°～３１° Ｎ 之间；（３） 该断面 ２６°～３４° Ｎ 之间的流速结构，可划分为Ⅰ、Ⅱ、Ⅲ３ 种类型，２ 支海流均为带状的单核结构。平均而言，黑潮与黑潮逆流流速均具有夏强冬弱的现象，但后者冬、夏季差异不显著。The geostrophic flow at section 137°E was calculated and analysed according to the temperature salinity data in winter and summer of 1967～1995 The maine results are as follows: (1) The Kuroshio is a single relatively stable current with a very strong velocity and does not branch. However, the Kuroshio Counter Current (KCC) is sometimes single, sometimes bifurcated or even trifurcated, showing a multi branching phenomenon. (2) In the sense of multi annual average, 31°N is the boundary line between the Kuroshio and the KCC at 137°E section. In winter, the Kuroshio appears mainly between 31°～33°N and the KCC between 29°～30°N. In summer, the Kuroshio appears mainly between 31°～34°N and the KCC between 28°～31°N. (3) The velocity structure at 137°E section may be classified into three types of Ⅰ, Ⅱ and Ⅲ. Both the Kuroshio and the KCC have a banded structure with a single core. In the sense of average, the velocity of the Kuroshio and the KCC is strong in summer and weak in winter. However, the seasonal variations of the KCC are not obvious. Meanwhile, the multi branching of the KCC was compared with the observed data.

关 键 词：黑潮 黑潮逆流 多支性 带状结构 经向断面 

分 类 号：P731.27[天文地球—海洋科学]