Landslide monitoring with high-resolution SAR data in the Three Gorges region  

作　　者：MingSheng Liao Jing Tang Teng Wang Timo Balz Lu Zhang 

机构地区：[1]Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China

出　　处：《Science China Earth Sciences》2012年第4期590-601,共12页中国科学（地球科学英文版）

基　　金：supported by National Basic Research Program of China (Grant No.2007CB714405);National Natural Science Foundation of China (Grant No.41021061);Major Research Program of the Three Gorges Region Geologic Disaster Protection (Grant No.SXKY3-6-4)

摘　　要：Employing the well-known D-InSAR technique,we investigated landslide monitoring in the Three Gorges region using TerraSAR-X data.The experiment demonstrates that using both the amplitude and differential phase allows us to identify the precise location,deformation and time range of occurrence of certain landslides.To overcome the atmospheric effect on D-InSAR results,a time-series analysis was also carried out.The observed nonlinear relationship between the deformation and water level suggests that reservoir water level fluctuation is one of the major causes of landslides,which is significant in terms of issuing landslide warnings.In addition,the comparison of TerraSAR-X and C-band ASAR data results indicates that TerraSAR-X data provide far more reasonable deformation measurements because of their high temporal and spatial resolutions.Employing the well-known D-InSAR technique, we investigated landslide monitoring in the Three Gorges region using Ter- raSAR-X data. The experiment demonstrates that using both the amplitude and differential phase allows us to identify the pre- cise location, deformation and time range of occurrence of certain landslides. To overcome the atmospheric effect on D-InSAR results, a time-series analysis was also carried out. The observed nonlinear relationship between the deformation and water level suggests that reservoir water level fluctuation is one of the major causes of landslides, which is significant in terms of is- suing landslide warnings. In addition, the comparison of TerraSAR-X and C-band ASAR data results indicates that Ter- raSAR-X data provide far more reasonable deformation measurements because of their high temporal and spatial resolutions.

关 键 词：landslide monitoring D-INSAR time series analysis high resolution 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置] P642.22[自动化与计算机技术—控制科学与工程]