TERRAPUB Journal of Oceanography

Journal of Oceanography, Vol. 54 (No. 3), pp. 217-226, 1998

The Kuroshio East of Taiwan and in the East China Sea and the Currents East of Ryukyu Islands during Early Summer of 1996

Yaochu Yuan1, Arata Kaneko2, Jilan Su1, Xiaohua Zhu2, Yonggang Liu1, Noriaki Gohda2 and Hong Chen1

1Second Institute of Oceanography, SOA, Hangzhou 310012, China
2Department of Environmental Sciences, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima 739, Japan

(Received 25 July 1997; in revised form 19 January 1998; accepted 20 January 1998)

Abstract: Using hydrographic data and moored current meter records and the ADCP observed current data during May-June 1996, a modified inverse method is applied to calculate the Kuroshio east of Taiwan and in the East China Sea and the currents east of Ryukyu Islands. There are three branches of the Kuroshio east of Taiwan. The Kuroshio in the East China Sea comes from the main (first) and second branches of the Kuroshio east of Taiwan. The easternmost (third) branch of the Kuroshio flows northeastward to the region east of Ryukyu Islands. The net northward volume transports of the Kuroshio through Section K2 southeast of Taiwan and Section PN in the East China Sea are 44.4 106 and 27.2 106 m3s-1, respectively. The western boundary current east of Ryukyu Islands comes from the easternmost branch of the Kuroshio east of Taiwan and an anticyclonic recirculating gyre more east, making volume transports of 10 to 15 106 m3s-1. At about 21°N, 127°E southeast of Taiwan, there is a cold eddy which causes branching of the Kuroshio there.


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