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采用定性与定量相结合的方法对滑坡要素进行了深入分析。将滑坡要素划分为空间要素、时间要素和岩土性质要素3个方面,并分别讨论它们与遥感影像空间分辨率、时间分辨率和波谱分辨率的关系。首先对各滑坡要素进行了定性分析,然后提出了判识滑坡空间要素的定量依据;提出了通过遥感影像计算滑动速率的公式,以此作为按照时间分辨率选择遥感数据的依据;最后提出为判识岩土性质要素应采用高波谱分辨率遥感影像的观点。
The method of qualitative and quantitative analysis is used to analyze the factors of landslide. The landslide elements are divided into three parts: the spatial element, the temporal element and the geotechnical element. Their spatial resolution, temporal resolution and spectral resolution are discussed respectively. Firstly, the qualitative analysis of each landslide element is made, and then the quantitative basis for identifying the landslide spatial elements is put forward. The formula to calculate the sliding rate by remote sensing images is proposed as the basis for selecting remote sensing data according to the temporal resolution. Finally, The essence of rock and soil knowledge should be used high spectral resolution remote sensing image point of view.