东印度洋中尺度涡在区域海洋动力学、物质与能量等输送方面具有重要作用。本项目以东印度洋中尺度涡三维特征为研究对象，将SSH、SST数据对中尺度涡的表面观测和Argo数据的剖面观测相结合，建立中尺度涡三维结构并分析其季节变化。针对中尺度涡高度计探测结果并不是某一时刻中尺度涡的准确特征信息、SST数据无法准确提取中尺度中心等问题，发展SST数据辅助SSH数据的中尺度涡遥感探测方法；针对用于中尺度涡三维结构建立的Argo浮标数据获取时间不一致问题，发展基于SST和海面风场数据的Argo数据同步化处理方法；最终，利用新的中尺度涡遥感探测方法与三维结构建立方法，开展东印度洋中尺度涡三维结构及其变化特征研究，揭示东印度洋中尺度涡的垂直结构及其影响因素，为研究东印度洋中尺度涡的产生机制、物质与热盐输运等区域海洋动力学提供支持。

Mesoscale eddies in the eastern Indian Ocean have important influences on the regional ocean dynamics, the oceanic transports of mass and energy. So the three-dimensional structures of mesoscale eddies in the eastern Indian Ocean are taken as the object of study. Combing the surface observations of mesoscale eddies by SSH, SST data with the vertical section observations by Argo data, the three-dimensional structures of mesoscale eddies are constructed and their seasonal variability is analyzed. Aimed at the detection results of mesoscale eddies by altimeter data are not the accurate characters of one time and the SST cannot detect the center of mesoscale eddy, the mesoscale eddy remote sensing detection method by SSH data with the assist of SST data is developed. For the Argo data used in the construction of three-dimensional of mesoscale eddy are not obtained at the same time, the Argo data are synchronized by SST and scatterometer sea surface wind data. Finally, the seasonal variability of three-dimensional of mesoscale eddies in the eastern Indian Ocean are analyzed on the basis of the above studies, and the vertical structures and their influences factors are revealed. These support the study on the generation mechanism of mesoscale eddies, the transports of mass, heat and salt by mesoscale eddies in the eastern Indian Ocean.