Chinese Science Bulletin

, Volume 45, Issue 18, pp 1648–1655 | Cite as

Circulation in the South China Sea in summer of 1998

  • Yonggang Liu
  • Yaochu Yuan
  • Jilan Su
  • Jingzhong Jiang
Papers

Abstract

Based on the CTD and meteorological data obtained by R/VXiangyanghong No. 14 in the South China Sea (SCS) in the summer of 1998, both current velocity and volume transport are calculated by using a modified inverse model. Circulation in the SCS is analyzed by combining the calculated results with ADCP data. The following results are obtained, (i) The most important feature of the circulation in the northeastern SCS is that a branch of the Kuroshio intrudes into the SCS with a small volume transport. It flows anticyclonically through the Bashi Strait and towards the southwest off the Taiwan Island, and it does not intrude into the inner SCS. (ii) The northern SCS is dominated mainly by a cyclonic circulation system with two cold eddies, (iii) The central and southwestern SCSs are mainly occupied by anticyclonic circulation systems, including three anticyclonic and one stronger cyclonic eddies. (iv) In the southeastern SCS, there is a large scope of cyclonic circulation extending in the SW-NE direction, (v) There is a “multi-eddy phenomenon” in the SCS, and a larger eddy contains several small eddies. (vi) There is western intensifying of the currents and eddies in the SCS.

Keywords

SCS circulation in summer multi-eddy phenomenon modified inverse model 

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References

  1. 1.
    Xu, X., Qiu, H., Chen, H., The general descriptions of the horizontal circulation in the South China Sea, Proceedings of the 1980 Symposium on Hydrometeology of the Chinese Society of Oceanology and Limnology (in Chinese), Beijing: Science Press, 1982, 137–145.Google Scholar
  2. 2.
    Villanoy, C. L., Udarbe, M. J. B., The circulation in the eastern South China Sea during May 1993, The Philippine Scientist: Special Issue, 1995, 128–142.Google Scholar
  3. 3.
    Fang, W., Guo, Z., Huang, Y., Observational study of the circulation in the southern South China Sea, Chinese Science Bulletin, 1998, 43(11): 898.CrossRefGoogle Scholar
  4. 4.
    Chou, D., Density circulation of the central water of South China Sea, Report of Comprehensive Survey in the Central South China Sea (1) (in Chinese), Beijing: Science Press, 1982, 129–139.Google Scholar
  5. 5.
    Huang, Q., Ocean currents in Nansha Area, Proceedings of Physical Oceanography in Nansha Area (I) (in Chinese), Beijing: China Ocean Press, 1994, 10–27.Google Scholar
  6. 6.
    Zeng, Q., Li, F., Ji, Z., Computation of monthly circulation in the South China Sea, Scientia Atmospherica Sinica (in Chinese), 1989, 13(2): 127.Google Scholar
  7. 7.
    Liu, X., Su, J., A reduced model of the circulation in the South China Sea, Oceanologia et Limnologie Sinica (in Chinese), 1992, 23(2): 167.Google Scholar
  8. 8.
    Su, J., Xu, J., Cai, S. et al., Circulation and eddies in the South China Sea, Onset and Evolution of the South China Sea Monsoon and Its Interaction With the Ocean (eds. Ding, Y., Li, C.) (in Chinese), Beijing: China Meteorological Press, 1999, 272–279.Google Scholar
  9. 9.
    Chern, C. S., Wang, J., A numerical study of the summertime flow around the Luzon Strait, J. Oceanogr., 1998, 54: 53.CrossRefGoogle Scholar
  10. 10.
    Chu, P. C., Chen, Y., Lu, S., Wind driven South China Sea deep basin warm-core/cold core eddies, J. Oceanogr., 1998, 54: 347.CrossRefGoogle Scholar
  11. 11.
    Takano, K., Harashima, A., Namba, T., A numerical simulation of the circulation in the South China Sea—Preliminary results, Acta Oceanographica Taiwan, 1998, 37(2): 165.Google Scholar
  12. 12.
    Wu, C. R., Shaw, P. T., Chao, S. Y., Seasonal and inlerannual variations in the velocity field of the South China Sea, J. Oceanogr., 1998, 54:361.CrossRefGoogle Scholar
  13. 13.
    Cai, S., Wang, W., Three-dimensional numerical simulation of South China Sea circulation in winter and summer, Acta Oceanologica Sinica (in Chinese), 1999, 21(2): 27.Google Scholar
  14. 14.
    Yuan, Y., Su, J., Pan, Z., Volume and heat transports of the Kuroshio in the East China Sea in 1989, La Mer, 1992, 30: 251.Google Scholar
  15. 15.
    Yuan, Y., Kaneko, A., Su, J. et al., The Kuroshio east of Taiwan and in the East China Sea and the currents east of Ryukyu Islands during early summer of 1996, J. Oceanogr., 1998, 54: 217.CrossRefGoogle Scholar
  16. 16.
    Fiadeiro, M. E., Veronis, G., On the determination of absolute velocities in the ocean, Journal of Marine Research, 1982, 40(Suppl.): 159.Google Scholar
  17. 17.
    Yuan, Y., Liu, Y., Su, J. et al., Kuroshio east of Taiwan Island and in the East China Sea in winter of 1997, Oceanography in China (12) (in Chinese), Beijing: China Ocean Press, 2000, 11–20.Google Scholar
  18. 18.
    Guan, B., A review of study on the South China Sea Warm Current, Oceanologia et Limnologia Sinica (in Chinese), 1998, 29(3): 322.Google Scholar

Copyright information

© Science in China Press 2000

Authors and Affiliations

  • Yonggang Liu
    • 1
    • 2
  • Yaochu Yuan
    • 1
    • 2
  • Jilan Su
    • 1
    • 2
  • Jingzhong Jiang
    • 1
    • 2
  1. 1.Second Institute of OceanographyState Oceanic Administration (SOA)HangzhouChina
  2. 2.Key Lab of Ocean Dynamic Processes and Satellite OceanographySOAHangzhouChina

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