地球物理场曲面特征线计算与场源特征识别

平面上的点及该点对应的场源信息构成了一个三维曲面，谷特征线和峰特征线是控制曲面形态的重要因素，对曲面谷特征线和峰特征线二类曲面结构线的提取，有助于场源信息的自动提取和识别。这里给出了这二类特征线的求取过程，简要分析了其对应的地质地球物理意义，并通过一个模型和实例计算说明了特征线在异常识别上的效果。

Calculation of surface characteristic lines and identification of field source feature

The point of the plane and the corresponding field source information constitutes a three-dimensional surface. Trough and peak characteristic lines are important factors which control surface morphology. Extraction of surface-trough and surface-peak characteristic lines contributes to automatic extraction and recognition of field source. In this paper, the author shows solving process of two characteristic lines and analyzes its corresponding significance of geology and geophysics and describes results for anomaly identification through a model and a field examples.