Abstract
The self-organizing map method is applied to satellite-derived sea-level anomaly fields of 1993–2012 to study variations of the Kuroshio intrusion northeast of Taiwan Island. Four major features are revealed, showing significant seasonal variability of the intrusion. In general, the intrusion increases (decreases) with a high (low) sea-level anomaly at the edge of the East China Sea shelf in winter (summer). Open-ocean mesoscale eddies play an additional role in modulating the seasonal variation of the intrusion. Further analyses are needed to study eddy-Kuroshio interaction dynamics.
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References
Chelton D B, Schlax M G, Samelson R M. 2011. Global observations of nonlinear mesoscale eddies. Prog. Oceanogr., 91, 167–216.
Gawarkiewicz G et al. 2011. Circulation and intrusions Northeast of Taiwan: chasing and predicting uncertainty in the cold dome. Oceanography, 24(4): 110–121, http://dx.doi.org/10.5670/oceanog.2011.99.
Gong G C, Shiah F K, Liu K K, Chuang W S, Chang J. 1997. Effect of the Kuroshio intrusion on the chlorophyll distribution in the southern East China Sea during spring 1993. Cont. Shelf. Res., 17: 79–94.
Guo X, Miyazawa Y, Yamagata T. 2006. The Kuroshio onshore intrusion along the shelf break of the East China Sea: the origin of the Tsushima Warm Current. J. Phys. Oceanogr., 36(12): 2 205–2 231.
Isobe A. 2008. Recent advances in ocean-circulation research on the Yellow Sea and East China Sea shelves. J. Oceanogr., 64(4): 569–584.
Jin B G, Wang G H, Liu Y G, Zhang R. 2010. Interaction between the East China Sea Kuroshio and the Ryukyu Current as revealed by the self-organizing map. J. Geophys. Res., 115: C12047, http://dx.doi.org/10.1029/2010JC006437.
Johns W E, Lee T N, Zhang D X, Zantopp R, Liu C T, Yang Y. 2001. The Kuroshio east of Taiwan: moored transport observations from the WOCE PCM-1 array. J. Phys. Oceanogr., 31(4): 1 031–1 053.
Kohonen T. 1982. Self-organized formation of topologically correct features maps. Biol. Cybern., 43: 59–69.
Kohonen T. 2001. Self-Organizing Maps. Springer Series in Information Sciences, Vol. 30, 3d ed., Springer-Verlag. p.501.
Lie H J, Cho C H. 2002. Recent advances in understanding the circulation and hydrography of the East China Sea. Fisheries Oceanography, 11(6): 318–328.
Liu Y G, Weisberg R H, He R Y. 2006b. Sea surface temperature patterns on the West Florida Shelf using the growing hierarchical selforganizing maps. J. Atmos. Oceanic Tech., 23(2): 325–338.
Liu Y G, Weisberg R H, Moors C N K. 2006a. Performance evaluation of the self-organizing map for feature extraction. J. Geophys. Res., 111: C05018, http://dx.doi. org/10.1029/2005JC003117.
Liu Y G, Weisberg R H. 2011. A review of Self-Organizing Map applications in meteorology and oceanography, in Self-Organizing Maps-Applications and Novel Algorithm Design. In: Mwasiagi J I ed. InTech, Rijeka, Croatia. p.253–272.
Liu Y, Dong C, Guan Y, Chen D, McWilliams J, Nencioli F. 2012. Eddy analysis in the subtropical zonal band of the North Pacific Ocean. Deep — Sea Res., Part I, 68: 54–67.
Liu Z G, Gan J P. 2012. Variability of the Kuroshio in the East China Sea derived from satellite altimetry data. Deep Sea Research Part I: Oceanographic Research Papers, 59: 25–36.
Ma C, Wu D X, Lin X P. 2009. Variability of surface velocity in the Kuroshio Current and adjacent waters derived from Argos drifter buoys and satellite altimeter data. Chinese Journal of Oceanology and Limnology, 27: 208–217.
Nitani H. 1972. Beginning of the Kuroshio, in Kuroshio: Its Physical Aspects. In: Stommel H, Yoshida K eds. Univ. of Tokyo Press, Tokyo. p.129–163.
Oey L Y, Hsin Y C, Wu C R. 2010. Why does the Kuroshio northeast of Taiwan shift shelfward in winter? Ocean Dyn., 60(2): 413–426.
Sassa C, Tsukamoto Y, Nishiuchi K, Konishi Y. 2008. Spawning ground and larval transport processes of jack mackerel Trachurus japonicas in the shelf-break region of the southern East China Sea. Cont. Shelf. Res., 28(18): 2 574–2 583.
Sassa C, Tsukamoto Y. 2010. Distribution and growth of Scomber japonicus and S. australasicus larvae in the southern East China Sea in response to oceanographic conditions. Marine Ecology Progress Series, 419: 185–199.
Sun X P, Xiu S M. 1997. Analysis on the cold eddies in the Sea Area Northeast of Taiwan. Mar. Sci. Bull., 16(2): 1–10. (in Chinese)
Tang T Y, Tai J H, Yang Y J. 2000. The flow pattern north of Taiwan and the migration of the Kuroshio. Cont. Shelf Res., 20(4–5): 349–371.
Tsui I F, Wu C R. 2012. Variability analysis of Kuroshio intrusion through Luzon Strait using growing hierarchical self-organizing map. Ocean Dyn., 62(8): 1 187–1 194.
Vélez-Belchí P, Centurioni L R, Lee D K, Jan S, Niiler P P. 2013. Eddy induced Kuroshio intrusions onto the continental shelf of the East China Sea. J. Marine Res., 71(1–2): 83–107.
Xu X H, Liao G H, Yang C H, Yuan Y C, Huang W G. 2013. Variability of surfer circulation and Kuroshio intrusion in northern South China Sea using growing hierarchical selforganizing maps. J. of Tropical Oceanogr. 32(5): 29–41, http://dx.doi.org/10.3969/j.issn.1009-5470.2013.05.005. (in Chinese)
Zhang D X, Lee T N, Johns W E, Liu C T, Zantopp R. 2001. The Kuroshio east of Taiwan: modes of variability and relationship to interior ocean mesoscale eddies. J. Phys. Oceanogr., 31(4): 1 054–1 074.
Zhang X Y, Yu G H, Zhang S J, Huang F L. 2009. The distribution characteristics and seasonal variabilities of thermocline in the Philippine Sea. Mar. Sci. Bull., 28(4): 17–26.
Zhang X, Zhang Y G, Zhang S J, Huang F L. 2009. The distribution characteristics and seasonal variabilities of thermocline in the Philippine Sea. Mar. Sci. Bull., 28(4), 17–26. (in Chinese)
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Supported by the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA11010103), the National Natural Science Foundation of China (Nos. 41222037, 41221063), the Project of Global Change and Air-Sea Interaction (No. GASI-03-01-01-02), the National Basic Research Program of China (973 Program) (No. 2013CB956202), the 111 Project of Ministry of Education of China (No. B07036), the Natural Science Foundation of Shandong (No. JQ201111), and the National Special Research Fund for Non-Profit Marine Sector (No. 201205018)
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Yin, Y., Lin, X., Li, Y. et al. Seasonal variability of Kuroshio intrusion northeast of Taiwan Island as revealed by self-organizing map. Chin. J. Ocean. Limnol. 32, 1435–1442 (2014). https://doi.org/10.1007/s00343-015-4017-x
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DOI: https://doi.org/10.1007/s00343-015-4017-x