InSAR identification and cause analysis of landslide disaster in Ningxia (Xiji county) section of the Yellow River basin

doi:10.13474/j.cnki.11-2246.2022.0180.

Abstract

Abstract: In view of the large-scale landslide risk, taking Ningxia (Xiji county) section of the Yellow River basin as the study area, this paper uses the permanent scatterer InSAR(PS-InSAR) technology to process the 18 Sentinel-1A satellite image data covering the area, obtains the radar line of sight deformation field in the study area from October 2019 to March 2021, and analyzes the deformation characteristics in the study area. The InSAR monitoring results are compared with the field survey results to verify the effectiveness of PS-InSAR method. The results show that the landslide deformation area identified by PS-InSAR may be related to the revival of old landslides induced by more precipitation in recent years.

Key words: Yellow River basin, landslide disaster, SAR, Sentinel-1, GPS

CLC Number:

P237

XU Guanghe, HE Xiaofeng, WANG Guorui, HU Zhiyong, CHENG Xia, LI Xiaoqiong. InSAR identification and cause analysis of landslide disaster in Ningxia (Xiji county) section of the Yellow River basin[J]. Bulletin of Surveying and Mapping, 2022, 0(6): 104-107.

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