DlnSAR technique for slow-moving landslide monitoring based on slope units

摘要

Slow-moving landslides are one of the most widely distributed natural hazards in the world, with severe effects on the stability of structures. However, it is hard to be detected without monitoring method. In this paper, the Differential Interferometric Aperture Radar (DInSAR) technique is used to monitor the slow-moving landslides. But, the standardised procedures for the DInSAR technique are difficult to find the boundaries of landslides. The new segmentation method of slope units with the Digital Elevation Model is proposed. Moreover, the credible zone analysis is established based on slope units to filter the error value and improve the precision of monitoring results. Finally, according to the features of slow-moving landslides, the outcomes of DInSAR technique for slow-moving landslides inventory map are available. The methodology is tested at Wudongde valley area in the North-west China, where the SAR data and natural hazards inventory maps are available. The correctness of monitoring results will be verified.