在东方中国海(ECS ) 的 mesoscale 旋涡的统计特征用测高法被分析从 1993 ~ 2010 的海表面高度异例(SSHA ) 数据。速度基于几何学的自动化旋涡察觉计划被采用从 SSHA 数据检测旋涡产生一个旋涡数据集合。大约 1,096 个旋涡(旋涡的一一生作为一个旋涡被数) 与比长或等于 4 个星期的一生在这个区域被识别。分别地,旋涡的平均一生和半径是 7 个星期和 55 km,在这个方面气旋的旋涡(CE ) 和逆旋风的旋涡(AE ) 之间没有重要差别。旋涡一生比在浅水里在深水里通常是更长的。大多数旋涡宣传沿着自台湾东面的菲律宾海流向日本的暖流(由自台湾东面的菲律宾海流向日本的暖流的 advected ) 向东北,与在它的东方方面上在它的西方的方面和 AE 上产生的更多的 CE。自台湾东面的菲律宾海流向日本的暖流运输的变化是为旋涡开始的主要机制之一,然而自台湾东面的菲律宾海流向日本的暖流的东方方面上的 AE 的产生(到开的海洋)也易于另外的因素,从开的海洋由于琉球岛和骚乱的存在卷例如风压力。
Statistical characteristics of mesoscale eddies in the Eastern China Sea (ECS) are analyzed using altimetry sea surface height anomaly (SSHA) data from 1993 to 2010. A velocity geometry-based automated eddy detection scheme is employed to detect eddies from the SSHA data to generate an eddy data set. About 1,096 eddies (one lifetime of eddies is counted as one eddy) with a lifetime longer than or equal to 4 weeks are identified in this region. The average lifetime and radius of eddies are 7 weeks and 55 km, respectively, and there is no significant difference between cyclonic eddies (CEs) and anticyclonic eddies (AEs) in this respect. Eddies' lifetimes are generally longer in deep water than in shallow water. Most eddies propagate northeastward along the Kuroshio (advected by the Kuroshio), with more CEs generated on its western side and AEs on its eastern side. The variation of the Kuroshio transport is one of the major mechanisms for eddy genesis, however the generation of AEs on the eastern side of the Kuroshio (to the open ocean) is also subject to other factors, such as the wind stress curl due to the presence of the Ryukyu Islands and the disturbance from the open ocean.