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基于2008年4月22—26日吕宋海峡调查航次的下放式声学多普勒流速剖面仪(LADCP)和船载ADCP(SADCP)等观测资料,并采用潮波模式模拟结果去除潮流对观测资料的影响,观测结果表明:调查期间黑潮入侵南海的位置与1992年春季比较接近,其分支位于调查海区中部C2、C7、C8和C9站,表层黑潮在C8站分离为两支,分别流向C9和C2站,C9站北向流明显比C8站减弱。在C2站,黑潮分支位于400m层以浅,其最大西向流速为77cm/s,而在C7、C8和C9站黑潮分支位于500m层以浅,黑潮在入侵南海的过程中其核心深度逐渐变浅。上层黑潮明显作反气旋弯曲。本调查航次的观测结果在定性上支持吕宋海峡水交换有“三明治”垂直结构的特性。
Based on the LADCP and SADCP data from the Luzon Strait survey conducted from April 22 to 26, 2008, tidal wave model simulation results were used to remove the influence of tidal current on the observed data The results show that the location of the invasion of the South China Sea by the Kuroshio was relatively close to that of the spring of 1992 during the survey period, with its branches located at C2, C7, C8 and C9 in the central part of the survey sea area. The surface Kuroshio was separated into two at the C8 station, C9 and C2 stations, C9 station northward flow significantly weaker than the C8 station. At station C2, the Kuroshio branch is shallow at 400m, with a maximum velocity of 77cm / s. While at the stations C7, C8 and C9, the Kuroshio Branch is located at a shallow depth of 500m, and its core depth gradually changes during the invasion of the South China Sea shallow. The upper Kuroshio was clearly anti-cyclonic curved. The observation results of this survey voyage qualitatively support the vertical structure of the “Sandwich” water exchange in the Luzon Strait.