The currents on both sides of the Ryukyu Islands in April and May 2002

YANG Cheng-hao; YUAN Yao-chu; WANG Hui-qun

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YANG Cheng-hao, YUAN Yao-chu, WANG Hui-qun. The currents on both sides of the Ryukyu Islands in April and May 2002[J]. Haiyang Xuebao, 2007, 29(3): 1-13.

Citation:

YANG Cheng-hao, YUAN Yao-chu, WANG Hui-qun. The currents on both sides of the Ryukyu Islands in April and May 2002[J]. Haiyang Xuebao, 2007, 29(3): 1-13.

YANG Cheng-hao, YUAN Yao-chu, WANG Hui-qun. The currents on both sides of the Ryukyu Islands in April and May 2002[J]. Haiyang Xuebao, 2007, 29(3): 1-13.

Citation:

YANG Cheng-hao, YUAN Yao-chu, WANG Hui-qun. The currents on both sides of the Ryukyu Islands in April and May 2002[J]. Haiyang Xuebao, 2007, 29(3): 1-13.

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The currents on both sides of the Ryukyu Islands in April and May 2002

State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2006-10-09
Rev Recd Date: 2007-01-24

Abstract

Abstract

On the basis of the data obtained in cruises of A pril and May 2002 onboard the R/V Chofu Maru of Japan Meteorological Agency and the satellite wind data of QuikSCAT during April and May 2002,the velocity and volume transport (VT) of the currents on both sides of the Ryukyu Islands are computed by using the modified inverse method In the meantime,analyzing the ARGOS satellite-tracked drifters data in 2002 and the simultaneous sea surface height anomalies merged data of CLS AVISO,the main results are obtained as follows: (1) The Kuroshio only has one core at the Section PN the netnortheastward VT through Section PN is about 34.7×10⁶ m³/s,including Taiwan Warm Current,Kuroshio in the East China Sea and the anticyclonic eddy east of the Kuroshio.(2) The Kuroshio has two cores in the Tokara Strait,and its VT is about 25.6×10⁶ m³/s,and then flows towards Section ASUKA (3) In the area southeast of the Okinaw a Island,VT of Ryukyu Current (RC) is about 8.8×10⁶ m³/s,and it flows towards Section AM (4) The net VT of the northward current through the area east of the Amami-Oshima Island is about 12.7×10⁶ m³/s,and then flows towards Section ASUKA.There is a meso-scale anticyclonic gyre at Section ASUKA,its diameter is about 240 km,and its VT is about 28.5×10⁶ m³/s.(5) The VT of Kuroshio through Section ASUKA in the first layer mostly comes from the Kuroshio in the TokaraStrait.In the second and third layers,it comes from the northward current east of the Amami-Oshima.Island and the Kuroshio in the TokaraStrait,and their VTs equal approximately.(6) From analyzing the drifts data,a part of current east of the Amami-Oshim a Island comes from the area east of Section AM,and then it flows through Section ASUKA.
- Kuroshio,
- Ryukyu Current,
- East China Sea,
- area east of Ryukyu Islands,
- area southeast of Kyushu Island,
- modified inverse method

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References(28)

References

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