Application of InSAR technology in geological hazard risk investigation in Xin County,Henan Province
The launch of a new round of nationwide county-level geological hazard risk investigation and evaluation is aimed at further understanding the bottom line of geological hazard risks,pinpointing"where the hazards are",and providing scientific decision-making basis for the government to effectively carry out natural disaster prevention and control work and national spatial planning.This paper takes the south mountain areas of Henan as an example.Firstly,by collecting data and conducting field sur-veys,the development of geological hazards in the entire county is obtained.Then,InSAR technology is used to monitor the sur-face deformation of the entire county and the deformation of typical geological hazard points at different periods,and to calculate the surface deformation map and single point deformation curve of the entire area separately.Finally,the comparison between the surface deformation map of the entire county and the geological development of the county,as well as the single point deforma-tion curve and actual evolution,indicates that InSAR technology has effective surface deformation detection and monitoring capa-bilities,and can discover early identification of hidden dangers.
InSARgeological disaster investigationearly identificationXin County
万方数据
维普
