Monitoring of Yunnan Cheyiping Landslide Activities and Analysis of Influencing Factors Based on Time Series InSAR Technology
To study the activity characteristics and patterns of the landslide,this paper uses stacked in-terferometric synthetic aperture radar(InSAR)based on ascending and descending track C-band Senti-nel-1A data to obtain the deformation rates of the Cheyuping landslide from January 2020 to December 2021 along the slope direction and in the vertical direction.We obtain the landslide displacement time series evolution results.The results show that the maximum deformation rate of Cheyuping landslide is more than-90 mm/a along the slope direction and more than-40 mm/a in the vertical direction,and the deformation of the landslide is larger at the leading edge and middle part of the landslide,and smaller at the trailing edge,which is characteristic of the slip-type landslide.According to the analysis of rainfall data and time series results,rainfall has a certain influence on the landslide movement,showing seasonal accelerated deformation characteristics.At the same time,the geological and strati-graphic lithology of the landslide area and the change of the water level of the Lancang river also accel-erated the landslide activities to a certain extent.This study can provide technical reference for the in-terpretation of landslide deformation mechanism and disaster monitoring and early warning in the can-yon reservoir area.
万方数据
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