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OALib Journal期刊
ISSN: 2333-9721
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卫星高度计资料揭示的冬季南海吕宋冷涡的双涡结构
Keywords: 吕宋冷涡,南海,风应力,黑潮
Abstract:
？吕宋冷涡是南海海洋环流系中最重要的涡旋之一。利用卫星高度计资料时空较高分辨率的优势,发现冬季吕宋冷涡有可能是由2个气旋式涡旋所组成的,一个气旋式涡旋位于吕宋岛的西侧(lce1),另一个位于吕宋岛的西北(lce2)。利用相关分析、功率谱分析等,估计了局地风应力和黑潮在形成吕宋冷涡过程中各自的贡献。研究结果表明,lce1只存在于冬季,与吕宋岛西侧局地的风应力旋度有关;lce2位于进入吕宋海峡的黑潮的西侧,全年存在,可能是由黑潮所诱生的气旋式涡旋,其变化主要周期为季节内振荡。
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