针对庞大复杂的海洋数据流场，利用三维标量场的拓扑分析方法，对海洋目标水团进行提取，达到特征可视化的目的。

This paper introduces a topological simplification of 3d scalar fields for extracting water mass, and realizes the feature-based visualization.

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模型以假设分布于不同区域交界面上的虚拟磁流密度、磁荷密度以及标量电位为待求解的未知变量；

The model employs the imaginary magnetic current density and magnetic charge density distributed over the interfaces of different regions, and the scalar potential on these interfaces as unknowns;

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