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Journal of Tropical Oceanography >

2015 , Vol. 34 >Issue 1: 15 - 22

DOI: https://doi.org/10.11978/j.issn.1009-5470.2015.01.003

Marine Hydrography

Lagrangian analysis of drifter trajectories near the Luzon Strait

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  • 1. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;

Received date: 2014-02-20

  Revised date: 2014-05-27

  Online published: 2015-02-10

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Abstract

Drifter data and the Lagrangian coherent structures (LCSs) are used to discuss the upper-layer circulation and water exchange near the Luzon Strait. Our results show that the LCSs, which are extracted from the surface currents, can depict the transport structure of the study area, and explain the motion of drifters reasonably. There exist southeast-northwest orientated LCSs, which extend from the Pacific Ocean to the South China Sea through the Luzon Strait during winter; during the summer, the orientation of those strait-crossing LCSs turns into southwest-northeast. The LCSs-formed transport pathways and barriers give reasonable explanation of the seasonal tendency of water exchange in the Luzon Strait, and the two types of the LCSs act as the pathways of the surface water exchange between the Pacific Ocean and the South China Sea.

Key words： Luzon Strait; upper-layer water exchange; Kuroshio; drifter; Lagrangian coherent structure

Cite this article

HUANG Gao-long1, 2, WEI Xing1, ZHAN Hai-gang1 . Lagrangian analysis of drifter trajectories near the Luzon Strait[J]. Journal of Tropical Oceanography, 2015 , 34(1) : 15 -22 . DOI: 10.11978/j.issn.1009-5470.2015.01.003

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