大地测量与地球动力学2026，Vol.46Issue(9)：1095-1106,12.DOI:10.14075/j.jgg.2025.12.420
基于SBAS-InSAR的包头市地表形变监测与驱动机制分析
Ground Deformation Monitoring and Driving Mechanism Analysis in Baotou Based on SBAS-InSAR
摘要
Abstract
Based on 228 Sentinel-1 images acquired from January 2018 to August 2022,we use the small baseline subset interferometric synthetic aperture radar(SBAS-InSAR)technique to derive sur-face deformation time series in Baotou.Multi-source datasets,including precipitation records,optical imagery,and mineral resource distribution data,were integrated to analyze deformation characteristics and their driving factors in different functional zones.The results indicate that the study area is generally stable,with approximately 98.85％of permanent scatterers(PS)exhibiting annual average deformation rates between-10 and 10 mm/a,while significant local variations are observed.In local built-up areas of the urban plain,evident subsidence occurs due to building loads and ash compaction,with a maximum rate of-73 mm/a.Open-pit mining activities in Donghe district induce pronounced deformation,with a maximum subsidence rate of-77 mm/a,and a stage-wise adjustment of deformation is observed af-ter mining cessation.Time-series analysis results show that deformation in urban built-up areas exhib-its weak sensitivity to precipitation,whereas deformation in mining areas presents a lagged response to precipitation at the monthly scale.Comparison with GNSS observations indicate that there is a good consistency between InSAR and the measured deformation trends.The results suggest that mining ac-tivities and urban construction are the primary controlling factors of regional surface deformation,while natural conditions play a modulating role in deformation evolution across different functional zones.The study highlights the application potential of SBAS-InSAR for surface deformation monito-ring in resource-based cities.关键词
SBAS-InSAR/地表形变/驱动机制/采矿活动/包头市Key words
SBAS-InSAR/ground deformation/driving mechanism/mining activities/Baotou分类
天文与地球科学引用本文复制引用
丁岩流,刘茜茜,田静,闫世勇,林丽新..基于SBAS-InSAR的包头市地表形变监测与驱动机制分析[J].大地测量与地球动力学,2026,46(9):1095-1106,12.基金项目
国家自然科学基金(42107491) （42107491）
河南工业大学粮食信息处理中心科研平台开放课题(KFJJ2022008). （KFJJ2022008）
