Monitoring of surface deformation characteristics in Xi'an based on SBAS-InSAR technology

doi:10.13474/j.cnki.11-2246.2023.0030

Abstract

Abstract: Land subsidence is one of the most serious geological disasters in Xi'an city.In this paper, 36 Sentinel-1A images of Xi'an city from 2018 to 2021 are processed based on SBAS-InSAR technology to obtain the latest surface deformation characteristics of Xi'an city and analyze its causes.The results show that:① the main surface deformation areas in xi'an city from 2018 to 2021 are Yuhuazhai area, electronic city area, Sanyao-Fengqiyuan area and southern part of city wall area. ② The Yuhuazhai and Yuecheng areas have been uplifted, while the southern part of the city wall has been uplifted, and the Sanyao-Fengqiyuan area still shows a downward trend. ③ The surface deformation of Xi'an city is mainly affected by confined water mining and recharge, and the distribution and trend of surface deformation are significantly affected by ground cracks, and the building load also has a certain influence on the surface deformation.

Key words: Xi'an, land subsidence, SBAS-InSAR, Sentinel-1A, groundwater extraction

CLC Number:

P237

WANG Runze, FEI Min, LIANG Shichuan, XUE Haowei, LOU Xiao. Monitoring of surface deformation characteristics in Xi'an based on SBAS-InSAR technology[J]. Bulletin of Surveying and Mapping, 2023, 0(1): 173-178.

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