doi:10.16186/j.cnki.1673-9787.2020110009

Received:2020/11/02

Revised:2020/12/15

Published:2022/05/15

SBAS-InSAR monitoring and analysis of land subsidence in Xiongan New Area from 2017 to 2019

RAN Peilian1, LI Shaoda1, DAI Keren1,2, YANG Xiaoxia1, ZENG Sen1,3, RAN Zhongxin1,4

1.College of Earth Sciences，Chengdu University of Technology，Chengdu  610059，Sichuan， China;2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection，Chengdu University of Technology，Chengdu  610059 ， Sichuan， China;3.Information Centre， Department of Natural Resources of Sichuan Province， Chengdu  610059 ， Sichuan， China;4.Hanjiang River Bureau of Hydrology and Water Resources Survey， Bureau of Hydrology ，Changjiang Water Resources Commission，Xiangyang  441100， Hubei， China

Abstract:In order to master the land subsidence of Xiongan New Area,32 Sentinel-1Bimages covering the Xiongan New Area from 2017 to 2019 were selected to extract the annual average subsidence rate and accumu- lated subsidence of Xiongan New Area by SBAS-InSAR technology,and the causes of land subsidence from the geographical space in Xiongan New Area were analyzed. The results showed that most areas of Xiongan New Area were relatively stab. The land subsidence was mainly concentrated in the north and south of Xiongan New Area. The subsidence rate in the north of Xiongan New Area was as high as 80 mm/a,and that in the south of Xiongan New Area was as high as 90 mm/a. The land subsidence in Xiongan New Area was related to the over exploitation of geothermal resources and groundwater. With the rapid development of Xiongan New Area,the re- search results of InSAR could provide important reference values for the sustainable development of Xiongan New Area.

Key words:Sentinel-1 B;SBAS-InSAR;Xiongan New Area;land subsidence;subsidence affecting factor;geospatial analysis

雄安新区2017—2019...AS-InSAR监测与分析_冉培廉.pdf