Influence of island chains on the Kuroshio intrusion in the Luzon Strait

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• 作者：Zhida Huang ; Hailong Liu ; Pengfei Lin ; Jianyu Hu
• 关键词：Key wordsLuzon Strait ; Kuroshio intrusion ; island chains ; Kuroshio east branch
• 刊名：Advances in Atmospheric Sciences
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：34
• 期：3
• 页码：397-410
• 全文大小：
• 刊物主题：Atmospheric Sciences; Meteorology; Geophysics/Geodesy;
• 出版者：Science Press
• ISSN：1861-9533
• 卷排序：34

文摘

By applying a global high-resolution (0.1°) OGCM, the influence of the island chains in the Luzon Strait (LS) on the Kuroshio intrusion is studied systematically. The island chains in the LS are separated into three parts: the south island chain, the middle and north island chain, and Babuyan Island. One control and three sensitivity experiments are conducted by adding these three parts of the topography gradually. From comparisons of the circulation, temperature, and salinity structures, it is found that the south island chain decreases the westward bending of the main Kuroshio path, the middle and north island chain increases the westward bending, and Babuyan Island also increases the westward bending. These results are extremely clear in winter. Dynamic diagnoses suggest that the westward bending increases with an increase in the incidence angle of the Kuroshio and an increase in the Kuroshio east branch transport. Moreover, the middle and north island chain can split the Kuroshio into two parts, the Kuroshio west and east branches, which can be seen clearly in the satellite altimeter maps.