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The Changing Circulation of Asia-Pacific Marginal Seas in the South China Sea: A Physical View

  • Jianping GanEmail author
  • Zhiqiang Liu
  • Chiwing Rex Hui
  • Yao Tang
  • Zhongya Cai
  • Junlu Li
Chapter
  • 57 Downloads
Part of the Atmosphere, Earth, Ocean & Space book series (AEONS)

Abstract

The South China Sea (SCS) is the largest marginal sea in the western Pacific Ocean. The overall change of marine environment in the SCS is mainly regulated by the variation of ocean circulation, which is, in turn, governed by the geophysical fluid dynamics in the circulation. This chapter provides an overview and analysis on the predominant cyclonic-anticyclonic-cyclonic (CAC) circulation, and the associated processes and responses of the hydrography and pathway of the water masses in the SCS. We present the changing CAC circulation and transport in the SCS during the last 20-year, and reason the changes by investigating the underlying mechanism of external forcing associated with the water exchange with adjacent ocean, and internal dynamic response to the external forcing in the SCS. This study links the changing ocean with fundamental circulation physics, which validate scientifically the changing evidences and provide a solid theoretical foundation to foresee the future changing trend.

Keywords

South China Sea circulation Circulation physics Changing circulation Changing forcing 

Notes

Acknowledgements

This research was supported by the Key Research Project of the National Science Foundation, China (41930539, 41906016), and the Hong Kong Research Grants Council (GRF16204915, GRF16206516).

References

  1. Boyer TP, Baranova OK, Coleman C et al (2018) World ocean database 2018. In: Mishonov AV Technical Editor NOAA Atlas NESDIS 87Google Scholar
  2. Cai ZY, Gan JP, Liu ZQ et al (2020) Progress on the formation dynamics of the layered circulation in the South China Sea. Prog Oceanogr 181(202):102246Google Scholar
  3. Chao SY, Shaw PT, Wu SY (1996) Deep water ventilation in the South China Sea. Deep-Sea Res Pt I 43(4):445–466.  https://doi.org/10.1016/0967-0637(96)00025-8CrossRefGoogle Scholar
  4. Fang G, Wang Y, Wei Z et al (2009) Interocean circulation and heat and freshwater budgets of the South China Sea based on a numerical model. Dyn Atmos Oceans 47(1):55–72CrossRefGoogle Scholar
  5. Gan JP, Qu T (2008) Coastal jet separation and associated flow variability in the southwest South China Sea. Deep-Sea Res Pt I 55(1):1–19.  https://doi.org/10.1016/j.dsr.2007.09.008CrossRefGoogle Scholar
  6. Gan JP, Li H, Curchitser EN et al (2006) Modeling South China Sea circulation: response to seasonal forcing regimes. J Geophys Res Oceans 111(C6)Google Scholar
  7. Gan JP, Cheung A, Guo XG et al (2009a) Intensified upwelling over a widened shelf in the northeastern South China Sea. J Geophys Res Oceans 114(C9)Google Scholar
  8. Gan JP, Li L, Wang DX et al (2009b) Interaction of a river plume with coastal upwelling in the northeastern South China Sea. Cont Shelf Res 29(4):728–740Google Scholar
  9. Gan JP, Liu ZQ, Hui CR (2016a) A three-layer alternating spinning circulation in the South China Sea. J Phys Oceanogr 46(8):2309–2315CrossRefGoogle Scholar
  10. Gan JP, Liu Z Q, Liang L L (2016b) Numerical modeling of intrinsically and extrinsically forced seasonal circulation in the China Seas: a kinematic study. J Geophys Res Oceans 121(7):4697–4715Google Scholar
  11. Gan JP, Cai Z, Tang Y et al (2020) Chaniging layered circulation in the South China Sea and adjacent northwestern Pacific Ocean (1992–2011) (to be submitted to Nat Geosci)Google Scholar
  12. Hellerman S, Rosenstein M (1983) Normal monthly wind stress over the world ocean with error-estimates. J Phys Oceanogr 13(7):1093–1104CrossRefGoogle Scholar
  13. Hsin YC, Wu CR, Chao SY (2012) An updated examination of the Luzon Strait transport. J Geophys Res Oceans 117:C03022Google Scholar
  14. Lan J, Zhang NN, Wang Y (2013) On the dynamics of the South China Sea deep circulation. J Geophys Res Oceans 118(3):1206–1210Google Scholar
  15. Li L, Qu TD (2006) Thermohaline circulation in the deep South China Sea basin inferred from oxygen distributions. J Geophys Res Oceans 111(C5)Google Scholar
  16. Liu ZQ, Gan JP (2012) Variability of the Kuroshio in the East China Sea derived from satellite altimetry data. Deep-Sea Res Pt I 59:25–36.  https://doi.org/10.1016/j.dsr.2011.10.008CrossRefGoogle Scholar
  17. Liu Z, Gan J (2017) Three-dimensional pathways of water masses in the South China Sea: a modeling study. J Geophys Res Oceans 122(7):6039–6054Google Scholar
  18. Mertz G, Wright DG (1992) Interpretations of the JEBAR term. J Phys Oceanogr 22(3):301–305CrossRefGoogle Scholar
  19. Nan F, Xue HJ, Yu F (2015) Kuroshio intrusion into the South China Sea: a review. Prog Oceangr 137:314–333CrossRefGoogle Scholar
  20. Nan F, Yu F, Xue H, Zengb L et al (2016) Freshening of the upper ocean in the South China Sea since the early 1990s. Deep-Sea Res I 118:20–29CrossRefGoogle Scholar
  21. Qu T (2000) Upper-layer circulation in the South China Sea. J Phys Oceanogr 30(6):1450–1460CrossRefGoogle Scholar
  22. Qu TD, Du Y, Sasaki H (2006) South China Sea throughflow: a heat and freshwater conveyor. Geophys Res Lett 33(23)Google Scholar
  23. Qu T, Mitsudera H, Yamagata T (2000) Intrusion of the North Pacific waters into the South China Sea. J Geophys Res Oceans 105(C3):6415–6424Google Scholar
  24. Qu TD, Song YT, Yamagata T (2009) An introduction to the South China Sea throughflow: its dynamics, variability, and application for climate. Dyn Atmos Oceans 47(1–3):3–14Google Scholar
  25. Wu CR, Hsin YC (2012) The forcing mechanism leading to the Kuroshio intrusion into the South China Sea J Geophys Res Oceans (1978–2012) 117(C7)Google Scholar
  26. Xu FH, Oey LY (2014) State analysis using the Local Ensemble Transform Kalman Filter (LETKF) and the three-layer circulation structure of the Luzon Strait and the South China Sea. Ocean Dyn 64(6):905–923CrossRefGoogle Scholar
  27. Yang SC, Lee DC, Ho TY (2012) The isotopic composition of Cadmium in the water column of the South China Sea. Geochim Cosmochim Acta 98:66–77CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Jianping Gan
    • 1
    Email author
  • Zhiqiang Liu
    • 2
  • Chiwing Rex Hui
    • 1
  • Yao Tang
    • 1
  • Zhongya Cai
    • 1
  • Junlu Li
    • 1
  1. 1.Department of Ocean Science and Department of MathematicsHong Kong University of Science and TechnologyKowloon, Hong KongChina
  2. 2.Department of Ocean Science and EngineeringSouthern University of Science and TechnologyShenzhenChina

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