江西萍乡时序InSAR形变监测

Timeseries InSAR deformation monitoring in Pingxiang,Jiangxi province

本文以萍乡市安源区为试验区,基于小基线集(SBAS)技术对24景Sentinel-1A影像进行时间序列处理,得到安源区2018—2019年间地面沉降监测结果,并讨论分析了影响地面沉降的主要因素。结果表明:安源区出现不均匀沉降,存在三个明显沉陷区,东南侧及北部中心形变最为显著,形变速率范围为-46~23 mm/a,累积沉降量达-92 mm。

This paper took Anyuan district of Pingxiang city as the experimental area,and applied small baseline subset(SBAS)technology to process the time series of 24-scene Sentinel-1A images to obtain the land subsidence monitoring results during 2018—2019 in Anyuan district,and discussed and analyzed the main factors affecting land subsidence.The results showed that there were three obvious subsidence areas in Anyuan area,and the deformation in southeast and north center was the most significant.The deformation rate ranges from-46 mm/a to 23 mm/a,and the cumulative subsidence was-92 mm.