利用地面数字高程模型数据确定地形构造线方法的研究

本文从地形构造线的物理特性出发，应用分析力学的原理，给出了地形构造线的主耍特征;探 讨了过去在确定地形构造线时所采用的纵横断面法，并提出了进一步完善该方法的方案。同 时，提出了一种利用落水矢量提取地形构造线的方法。实验结果表明，该方法不仅能有效地确 定区域地形的分水线和合水线，而且还可用于提取某些特定的地形构造线。 

Study on the Methods of Extracting Terrain Structure Lines from DEM Data

Studied the physical characters of terrain structure lines, the author discusses the main characteristic of terrain structure lines existing using the principle of analytical mechanics investigates the existing method of extracting terrain structure lines, and proposes a means to perfect the method. Besides, the author puts forward in which the vector of falling water is used. Test results show that the new method is not only able to extract all the terrain structure lines in the area, but also able to extract speci- fic terrain structure lines.