Journal of Oceanology and Limnology

, Volume 36, Issue 6, pp 2098–2109 | Cite as

Migration of mesoscale eddies across a leaping or penetrating western boundary current in the vicinity of a gap

  • Xinxin Song (宋新新)
  • Dongliang Yuan (袁东亮)Email author
  • Ruixiang Li (李锐祥)
  • Zheng Wang (王铮)


A 1.5-layer quasi-geostrophic reduced gravity ocean circulation model is used to study the propagation of mesoscale eddies across a western boundary current (WBC) either leaping across or penetrating in an anti-cyclonic path through the gap. The steady leaping WBC nearly blocks all eddies from propagating across it through the gap completely. However, both cyclonic and anti-cyclonic eddies can migrate across a penetrating WBC in the vicinity of a gap, while inducing an opposite type of eddies on the cyclonic side of the WBC by weakening or strengthening the intrusion of the WBC. Both type of eddies gained strength from the WBC in the course of the propagation across the WBC in the gap. Eddies approaching the gap from the upstream are found to migrate more easily into the western basin due to the advection of the WBC. The migration speeds of the eddies are almost unchanged by the presence of the WBC in all experiments.


mesoscale eddy Western Boundary Current gap 


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  1. Chelton D B, Schlax M G, Samelson R M. 2011. Global observations of nonlinear mesoscale eddies. Progress in Oceanography, 91 (2): 167–216.CrossRefGoogle Scholar
  2. Chern C S, Wang J. 2005. Interactions of mesoscale eddy and western boundary current: a reduced–gravity numerical model study. Journal of Oceanography, 61 (2): 271–282.CrossRefGoogle Scholar
  3. Johnson E R, McDonald N R. 2005. Vortices near barriers with multiple gaps. Journal of Fluid Mechanics, 531: 335–358.CrossRefGoogle Scholar
  4. Kuehl J J, Sheremet V A. 2014. Two–layer gap–leaping oceanic boundary currents: experimental investigation. Journal of Fluid Mechanics, 740: 97–113.CrossRefGoogle Scholar
  5. Li L, Nowlin Jr W D, Su J. 1998. Anticyclonic rings from the Kuroshio in the South China Sea. Deep Sea Research Part I: Oceanographic Research Papers 45 (9): 1 469–1 482.CrossRefGoogle Scholar
  6. Li R X. 2008. Dynamics of eddy–induced Kuroshio variability in the Luzon Strait. University of Chinese Academy of Sciences, Beijing, China. p.1–44. (in Chinese with English abstract)Google Scholar
  7. Lu J Y, Liu Q Y. 2013. Gap–leaping Kuroshio and blocking westward–propagating Rossby wave and eddy in the Luzon Strait. Journal of Geophysical Research: Oceans, 118 (3): 1 170–1 181.Google Scholar
  8. McWilliams J C, Flierl G R. 1979. On the evolution of isolated, nonlinear vortices. Journal of Physical Oceanography, 9: 1 155–1 182.Google Scholar
  9. McWilliams J C. 2006. Fundamentals of Geophysical Fluid Dynamics. Cambridge University Press, Cambridge. 283p.Google Scholar
  10. Nitani H. 1972. Beginning of the kuroshio. In: Stommel H, Yoshida K eds Kuroshio: Its Physical Aspects. University of Tokyo Press, Tokyo. p.129–163.Google Scholar
  11. Nof D. 1988. Eddy–wall interactions. Journal of Marine Research, 46 (3): 527–555.CrossRefGoogle Scholar
  12. Pedlosky J. 1994. Ridges and recirculations: gaps and jets. Journal of Physical Oceanography, 24 (2): 2 703.CrossRefGoogle Scholar
  13. Pu S Z, Yu H L, Jiang S N. 1992. Branchings of Kuroshio into Bashi Channel and the South China Sea. Tropic Oceanology, 11 (2): 1–8. (in Chinese with English abstract)Google Scholar
  14. Sheremet V A. 2001. Hysteresis of a western boundary current leaping across a gap. Journal of Physical Oceanography, 31 (5): 1 247–1 259.CrossRefGoogle Scholar
  15. Sheu W J, Wu C R, Oey L Y. 2010. Blocking and westward passage of eddies in the Luzon Strait. Deep Sea Research Part II: Topical Studies in Oceanography, 57 (19–20): 1 783–1 791.CrossRefGoogle Scholar
  16. Sutyrin G G, Rowe G D, Rothstein L M, Ginis I. 2003. Baroclinic eddy interactions with continental slopes and shelves. Journal of Physical Oceanography, 33 (1): 283–291.CrossRefGoogle Scholar
  17. Van Leeuwen P J. 2007. The propagation mechanism of a vortex on the β plane. Journal of Physical Oceanography, 37 (9): 2 316–2 330.CrossRefGoogle Scholar
  18. Wang G H, Su J L, Chu P C. 2003. Mesoscale eddies in the South China Sea observed with altimeter data. Geophysical Research Letters, 30 (21): 2 121.Google Scholar
  19. Yuan D L, Han W Q, Hu D X. 2006. Surface Kuroshio path in the Luzon Strait area derived from satellite remote sensing data. Journal of Geophysical Research: Oceans, 111 (C11): C11007.CrossRefGoogle Scholar
  20. Yuan D L, Wang Z. 2011. Hysteresis and dynamics of a western boundary current flowing by a gap forced by impingement of mesoscale eddies. Journal of Physical Oceanography, 41 (5): 878–888.CrossRefGoogle Scholar
  21. Zheng Q A, Tai C K, Hu J Y, Lin H Y, Zhang Y H, Su F C, Yang X F. 2011. Satellite altimeter observations of nonlinear Rossby eddy–Kuroshio interaction at the Luzon Strait. Journal of Oceanography, 67 (4): 365–376.CrossRefGoogle Scholar

Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xinxin Song (宋新新)
    • 1
    • 2
    • 3
  • Dongliang Yuan (袁东亮)
    • 1
    • 3
    Email author
  • Ruixiang Li (李锐祥)
    • 4
  • Zheng Wang (王铮)
    • 1
  1. 1.Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, and Function Laboratory for Ocean Dynamics and ClimateQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
  2. 2.Key Laboratory of Marine Science and Numerical Modeling, First Institute of Oceanography, State Oceanic Administration, and Laboratory for Regional Oceanography and Numerical ModelingQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
  3. 3.University of Chinese Academy of SciencesBeijingChina
  4. 4.South China Sea Marine Survey and Technology CenterState Oceanic AdministrationGuangzhouChina

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