Surface water exchanges in the Luzon Strait as inferred from Lagrangian coherent structures

作     者：Zhehao Zheng Wei Zhuang Jianyu Hu Zelun Wu Changjian Liu Zhehao Zheng;Wei Zhuang;Jianyu Hu;Zelun Wu;Changjian Liu

作者机构：State Key Laboratory of Marine Environmental ScienceCollege of Ocean and Earth SciencesXiamen UniversityXiamen 361102China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Joint Center for Ocean Remote SensingUniversity of Delaware-Xiamen UniversityNewarkDE 19716USA South China Sea Marine Survey and Technology CenterMinistry of Natural ResourcesGuangzhou 510300China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2020年第39卷第11期

页      面：21-32页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 

基　　金：The National Key Research and Development Program of China under contract No.2016YFA0601201 the National Natural Science Foundation of China under contract Nos 91858202,91958203,41730533 and 41776003 

主　　题：Lagrangian coherent structures(LCSs) Kuroshio Luzon Strait transport pathways particle tracking 

摘      要：This study presents a Lagrangian view of upper water exchanges across the Luzon Strait based on the finite-time Lyapunov exponents(FTLE)fields computed from the surface geostrophic *** Lagrangian coherent structures(LCSs)extracted from the FTLE fields well identify the typical flow patterns and eddy activities around the Luzon *** addition,they reveal the intricate transport paths and fluid domains,which are validated by the tracks of satellite-tracked surface drifters and cannot be visually recognized in the velocity *** FTLE fields indicate that there are mainly four types of transport patterns near the Luzon Strait;among them,the Kuroshio northward-flowingleapingpattern and the clockwise rotatingloopingpattern occur more frequently than theleakingpattern of the direct Kuroshio branch into the SCS and theoutflowingpattern from the SCS to the *** eddy shedding events of the Kuroshio at the Luzon Strait are further analyzed,and the importance of considering LCSs in estimating transport by eddies is *** anticyclonic eddy(ACE)shedding cases reveal that ACEs mainly originate from the looping paths of Kuroshio and thus could effectively trap the Kuroshio water before eddy *** provide useful information to predict the positions of the upstream waters that finally enter the *** contrast,LCS snapshots indicate that during the formation of cyclonic eddies(CEs),most CEs are not connected with the pathways of Kuroshio ***,the contribution of CEs to the surface water exchanges from the Pacific into the SCS is tiny.