利用多时相遥感影像与DEM数据的滑坡灾害调查--以新滩地区为例

以1985年新滩滑坡为例,利用多时相遥感影像和高程数据以及基础地质资料,综合分析了新滩滑坡的环境背景和灾害影响.通过对比1959年和1986年两个年代的高程信息与TM遥感图像以及地质资料,进行了滑坡敏感性分析,得出新滩地区滑坡前后的高程变化;并编程计算新滩滑坡前后的体积变化量,得到了与史料记载相近的结果.在此实例分析的基础上,综合阐述了利用多时相、高分辨遥感数据对滑坡进行分析与预警调查工作的技术优势.

Landslide Calamity Research Using Multi-Temporal Remote Sensing Images and DEM Data-- A Case Study of Xintan Landslide

Remote sensing technology has become one of the main techniques in macroscopical investigation and hazard evaluation of regional landslides and their growing environment.Taking 1985 Xintan landslide as a case study,this paper uses the multi-temporal remote sensing images and elevation data and basic geological information,synthetically analyzes the environmental background and calamity effects of Xintan landslide.Through comparing the elevation information between 1959 and 1986,the elevation difference before and after the Xintan landslide is derived.The volume difference is also figured out by programming.The result is consistent with the historical record.Based on the analysis of this instance, the technique advantage of analyzing and early warning of landslides by using multi-temporal,high-resolution remote sensing data is synthetically expatiated.