landform

The thalweg in loess hill area is an important terrain structural line, reflecting topography and landform character.

黄土丘陵区的沟沿,映该区地形地貌特征的重要的地形结构。

The wavy distribution curve of precipitation formed on the longitudinal-arranged underlying rangegorge landforms.At leeside of range, dry valley formed due to fohn effect.

纵向排列的岭谷地形波，形成明显的降水波状起伏分布曲，气流过山岭后下沉气流带来“焚风”效应，形成干热河谷。

The general formula about the calculation of downslide force and resistance to sliding in the arbitrary unit of landslide is deduced in the digital landform image.

讨论动态方向稳定性系数的概念，并在此基础上定义的动方向和的稳定性系数。

It was estimated that the prospect perspective were weakness in Zhidan area once, since data was narrow, and prospect is difficult for complicated landforms (vale, ridge and replat).

摘要由于资料的限制，前人对志丹探区勘探前景评价较低，加之沟谷、梁、赤纵横的地貌特征，勘探难度较大。