[1]State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography Ministry of Natural Resources Hangzhou 310012 China;
[2]National Marine Environmental Forecasting Center Ministry of Natural Resources Beijing 100081 China;
[3]State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China;
anticyclonic eddy; South China Sea; Kuroshio; Sea-Wing underwater glider;