中文摘要：

基于1993-2012年Aviso海面高度异常资料识别中尺度涡,计算南海海域涡动能比,并结合涡旋移动轨迹对气旋涡、反气旋涡的时空分布特征进行分析。结果表明,涡动能比能直观刻画区域涡旋活跃程度,结合涡旋移动轨迹后能有效反映涡旋演变过程。冬季季风期,南海中尺度涡最为活跃,反气旋涡、气旋涡交错分布在南海东部。台湾岛西南反气旋涡大多向西北方向移动,少数在气旋涡作用下向西南方向移动。越南东部涡旋呈偶极子分布,夏秋季北部是气旋涡,南部是反气旋涡,冬季北部是反气旋涡,南部是气旋涡。

英文摘要：

The lower-bound estimates on the percentage of eddy kinetic energy（LEP） are made from merged altimetric data from 1993 to 2012.We investigate the spatiotemporal variability of eddies based on LEP.The result shows that the LEP can be used to estimate the active value of mesoscale eddies in SCS and investigate the spatiotemporal variability of eddies with the movement path.Typically,anticyclonic eddies and cyclonic eddies are generated shoulder to shoulder along the east coast of the SCS during the East Asian winter monsoon.Most of the anticyclonic eddies appearing in the southwest of Taiwan Island prefer to propagate northwest,but minority of them propagate southwest in the cause of cyclonic eddies in the eastern part.The eddies located off central Vietnam have a dipole structure,which is constituted by an anticyclonic eddy in the southern part and a cyclonic eddy in the north during the winter monsoon,while a cyclonic eddy in the southern part and an anticyclonic eddy in the north in summer and autumn.