Long-duration series monitoring and analysis of surface deformation in underground strong explosion zones using DS-InSAR with multi-source data
In order to investigate the long-term spatiotemporal evolution rules of surface deformation related to un-derground explosions,a duration-series InSAR(DS-InSAR)processing was applied to multiple publicly available SAR datasets,including ERS-1/2,Envisat/ASAR,and Sentinel-1.Through homogeneous pixel identification and phase optimization,the surface deformation distribution of a certain test site from 1992 to 2019 was obtained,revealing the spatiotemporal evolution rules of surface deformation after underground strong explosions.The results show that the maximum deformation rate occurred during the coverage period of the ERS-1/2 satellite(-23 mm/a).The subsidence center is mainly distributed in the central part of the test site where underground strong explo-sions are more concentrated.The surface subsidence rate shows a trend of rapid subsidence,followed by decelera-tion,and then gradually stabilizing.Additionally,the subsidence area also decreases over time,with the surround-ing surface gradually approaching stability.
DS-InSARlong-duration series deformation monitoringunderground strong explosionmulti-source dataspatiotemporal evolution
NETL
NSTL
万方数据
