Bulletin of Surveying and Mapping ›› 2022, Vol. 0 ›› Issue (6): 121-124.doi: 10.13474/j.cnki.11-2246.2022.0183.

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Potential landslides deformation monitoring in Bijie city with InSAR time series

ZHANG Jiayong1, ZOU Yinxian1, LIU Qianyun1, ZHANG Nan1, GONG Wei1, LI Kanglun2   

  1. 1. Guizhou Geological Environment Monitoring Institute, Guiyang 550001, China;
    2. Wuhan Institute of Technology, Wuhan 430205, China
  • Received:2021-08-16 Published:2022-06-30

Abstract: Guizhou province is one of the provinces with frequent and most serious geological disasters in China, featured with strong concealment, abruptness and unpredictability. In order to strengthen the monitoring and evaluation of potential landslides in Nayong and Qianxi county, the surface deformation of Nayong and Qianxi county are obtained using Sentinel-1 SAR data from March 2017 to July 2020 and SBAS-InSAR technology. The results show that a total of 60 suspected landslide locations are found in the study area, and the maximum cumulative deformation variable of landslide is up to 23 cm in the monitoring time. Through the field survey of landslide locations in the study region, it shows that this method can provide reference for the prevention and management of geological disasters in Guizhou province.

Key words: landslide deformation, deformation monitoring, InSAR, SBAS-InSAR, Guizhou province

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