Abstract：To monitor land subsidence in Suzhou city during the rapid construction of subway, this paper focuses on the temporal analysis of ground deformation in Suzhou central area with PS-InSAR, using TerraSAR-X and Sentinel-1 data in 2010-2020 combined with leveling observation data. The results show that the ancient city area of Suzhou is stable relatively, and the maximum settlement points are in Yangshan with the settlement rate exceeding -20 mm/a. The subsidence trend has slowed down in Suzhou central area, with a significant reduction in the subsidence range, and several small uplifted areas have appeared particularly in the east of Caohu, and the north of Taiyang road. The settlement of buildings nearby the subway accelerate significantly with the influence of subway construction, especially for new buildings, whose own short-term sedimentary settlement is superimposed with the settlement of subway construction, resulting in the subsidence rate exceeding -10 mm/a.
ZHANG Lina,SONG Ruiqing,SONG Xinyou et al. Time-Series Analysis of Ground Subsidence in Suzhou Central Area during the Rapid Subway Construction Period with InSAR[J]. jgg, 2024, 44(9): 945-950.
