Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Seasonal Volume Transport Variation and Origin of the Tsushima Warm Current

  • You, Sung-Hyup (Global Environment System Research Laboratory National Institute of Meteorological Research, KMA) ;
  • Yoon, Jong-Hwan (Research Institute for Applied Mechanics Kyushu University)
  • Published : 2008.06.30
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Abstract

A model of the current and seasonal volume transport in the East China Sea was used to investigate the origin of the Tsushima Warm Current (TSWC). The modeled volume transport field suggested that the current field west of Kyushu ($30^{\circ}-32^{\circ}N$) was divided into two regions, R1 and R2, according to the bottom depth. R1 consisted of the Taiwan Warm Current (TWWC) region and the mixed Kuroshio-TWWC (MKT) water region, while R2 was the modified Kuroshio water (MKW) region west of Kyushu. The MKW branched from the Kuroshio and flowed into the Korea/Tsushima Straits through the Cheju-Kyushu Strait, contributing 41% of the annual mean volume transport of the TSWC. The TWWC and MKT water flowed into the Korea/Tsushima Straits through the Cheju-Kyushu and Cheju Straits, contributing 32% and 27% of the volume transport, respectively. The maximum volume transport of the MKW was 53% of the total volume transport of the TSWC in November, while the maximum volume transport of the water in the R1 region through the Cheju-Kyushu Strait was 41% in July. Hence, there were two peaks per year of volume transport in the TSWC.

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References

  1. An, H.S. 1985. The numerical experiment on the circulation in the Yellow Sea and the East China Sea by means of the two layer model. J. Kor. Ear. Sci. Soc., 6, 43-48. (In Korean)
  2. Barnier, B., L. Siefridt, and P. Marchesiello. 1995. Thermal forcing for a global ocean circulation model using a three-year climatology of ECMWF analyses. J. Mar. Sys., 6, 363-380 https://doi.org/10.1016/0924-7963(94)00034-9
  3. Beardsley, R.C., R. Limeburner, H. Yu, and G.A. Cannon. 1985. Discharge of the Changjiang (Yangtze River) into the East China Sea. Cont. Shelf Res., 4, 7-76 https://doi.org/10.1016/0278-4343(85)90022-6
  4. Cho, Y.K. 1995. Hydrographic and a hydraulic model of current in the Korea Strait. Ph.D. Thesis, Seoul National University, 142 p
  5. Chuang, W.S. 1985. Dynamics of subtidal flow in the Taiwan Strait. J. Oceanogr. Soc. Japan, 41, 65-72 https://doi.org/10.1007/BF02109175
  6. Chuang, W.S. 1986. A note on the driving mechanisms of current in the Taiwan Strait. J. Oceanogr. Soc. Japan, 42, 355-361 https://doi.org/10.1007/BF02110430
  7. Fang, G., B. Zhao, and Y. Zhu. 1991. Water volume transport through the Taiwan Strait and the continental shelf of the East China Sea measured with current meters. p. 345-348. In: Oceanography of Asian Marginal Seas, ed. by K. Takano. Elsevier, Amsterdam
  8. Guo, X., Y. Miyazawa, H. Hukuda, and T. Yamagata. 2001. Tracer experiments on the origin of the Tsushima Warm Current. p. 45-47. In: Proc. 11th PAMS/JECSS Workshop, Cheju, Korea, Apl. 11-13
  9. Hofmann, E.E., K.S. Hedstorm, J.R. Moisan, D.B. Haidvogel, and D.L. Mackas. 1991. Use of simulated drifter tracks to investigate general transport patterns and residence times in the coastal transition zone. J. Geophys. Res., 96(C8), 15041-15052 https://doi.org/10.1029/91JC00832
  10. Ichikawa, H. and R.C. Beardsley. 1993. Temporal and spatial variability of volume transport of the Kuroshio in the East China Sea. Deep Sea Res., 40, 583-605 https://doi.org/10.1016/0967-0637(93)90147-U
  11. Ichikawa, H. and R.C. Beardsley. 2002. The current system in the Yellow and East China Seas. J. Oceanogr., 58, 77-92 https://doi.org/10.1023/A:1015876701363
  12. Ishizaki, H. and T. Motoi. 1999. Reevaluation of the Takano-Oonishi scheme for momentum advection of bottom relief in ocean models. J. Atmos. and Ocean. Tech., 16, 1994-2010 https://doi.org/10.1175/1520-0426(1999)016<1994:ROTTOS>2.0.CO;2
  13. Isobe, A. 1999. On the origin of the Tsushima Warm Current and its seasonality. Cont. Shelf Res., 19, 117-133 https://doi.org/10.1016/S0278-4343(98)00065-X
  14. Kim, K., H.K. Rho, and S.H. Lee. 1991. Water masses and circulation around Cheju-do in summer. J. Oceanol. Soc. Korea, 26, 262-277
  15. Kondo, M. 1985. Oceanographic investigations of fishing grounds in the East China and the Yellow Sea. Bull. Seikai Region. Fish. Res. Lab., 62, 19-55
  16. Lee, H.C. and J.H. Yoon. 1994. On the free surface OGCM. Proc. of Fall Meeting the Japan Oceanogr. Soc., 225-226
  17. Levitus, S., R. Burgett, and T.P. Boyer. 1994. World ocean atlas, Vol. 3: Salinity. NOAA Atlas NESDIS, 3, 99 p
  18. Levitus, S. and T.P. Boyer. 1994. World ocean atlas, Vol. 4: Temperature. NOAA Atlas NESDIS, 4, 117 p
  19. Lie, H.-J. 1986. Summertime hydrographic features in the southeastern Hwanghae. Prog. Oceanogr., 17, 229-242 https://doi.org/10.1016/0079-6611(86)90046-7
  20. Lie, H.-J. and C.-H. Cho. 1994. On the origin of the Tsushima Warm Current. J. Geophys. Res., 99, 25081-25091 https://doi.org/10.1029/94JC02425
  21. Lie, H.-J., C.-H. Cho, J.-H. Lee, P. Niller, and J.-H. Hu. 1998. Separation of the Kuroshio water and its penetration onto the continental shelf west of Kyushu. J. Geophys. Res., 103, 2963-2676 https://doi.org/10.1029/97JC03288
  22. Lie, H.-J., C.-H. Cho, J.-H. Lee, S. Lee, and Y. Tang. 2000. Seasonal variation of the Cheju Warm Current in the northern East China Sea. J. Oceanogr., 56, 197-211 https://doi.org/10.1023/A:1011139313988
  23. Lin, K., B. Guo, and Y. Tang. 2001. An analysis on observational surface current in the Yellow Sea and the East China Sea. p. 67-71. In: Proc. 11th PAMS/JECSS Workshop, Cheju, Korea, Apl. 11-13
  24. Noh, Y. and H.J. Kim. 1999. Simulations of temperature and turbulence structure of the oceanic boundary layer with the improved near surface process. J. Geophys. Res., 104, 15621-15634 https://doi.org/10.1029/1999JC900068
  25. Noh, Y., C.J. Jang, T. Yamakata, P.C. Chu, and C.H. Kim. 2002. Simulation of more realistic upper-ocean processes from an OGCM with a new ocean mixed layer model. J. Phys. Oceanogr., 32, 1284-1307 https://doi.org/10.1175/1520-0485(2002)032<1284:SOMRUO>2.0.CO;2
  26. Qiu, B. and N. Imasato. 1990. A numerical study on the formation of the Kuroshio Counter Current and the Kuroshio Branch Current in the East China Sea. Cont. Shelf Res., 10, 165-184 https://doi.org/10.1016/0278-4343(90)90028-K
  27. Takikawa, T., J.H. Yoon, and K.D. Cho. 2005. The Tsushima Warm Current through the Tsushima Straits estimated from ADCP data by ferryboat. J. Phys. Oceanogr., 35, 1154-1168 https://doi.org/10.1175/JPO2742.1
  28. Webb, D.J., B.A. de Cuevas, and C.S. Richmond. 1998. Improved advection scheme for ocean models. J. Atmos. Ocean. Tech., 15, 1171-1187 https://doi.org/10.1175/1520-0426(1998)015<1171:IASFOM>2.0.CO;2

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