Research on groundwater activity in Ningjiang District,Songyuan City,Jilin Province based on InSAR time-series
The surface cumulative deformation data of Ningjiang District in Songyuan City,Jilin Province from 2017 to 2021 have been monitored by SBAS-InSAR technology.It systematically analyzes the impact of groundwater activity on surface subsidence in the area,combined with actual groundwater level measurement data.The InSAR mo-nitoring results show that there is a significant subsidence in study area,with obvious seasonal periodic subsidence characteristics over time.This study constructs a multivariate linear regression model through incorporating factors such as groundwater level changes,geological conditions,and precipitation to quantitatively analyze the relationship among these factors and surface deformation.The results reveal a significant influence of groundwater level changes on surface deformation.Furthermore,when combined with land use data,it is found that agricultural water usage pri-marily influences surface deformation in the subsidence area.
SBAS-InSARsurface deformation monitoringgroundwaterNingjiang DistrictSongyuan City
NETL
NSTL
万方数据
