摘要
针对地表沉降与地下水变化之间的关系研究,助力资源开发与灾害防治之间突出矛盾的解决。该文利用GRACE/GRACE-FO卫星观测数据反演京津冀地区的地下水变化情况,利用Sentinel-1卫星观测结果,通过小基线集干涉测量技术(SBAS-InSAR)计算该区域的地面沉降速率,在地下水变化分析的基础上研究地下水变化与降雨的相关关系,并进而得到地表沉降与地下水变化的相关关系。结果表明,2003—2020年京津冀地区地下水储量呈减少趋势,变化速率达到-11.4 mm/a,降雨量年际变化较大,对地下水储量亏损存在影响;京津冀地区中,北京市地表形变相较于地下水变化滞后时间约为3个月,地下水变化与地表形变存在较高的相关性,二者相关系数达到0.758。
Research on the relationship between surface subsidence and groundwater changes to help resolve the outstanding conflict between resource development and disaster prevention.In this paper,we utilized the GRACE/GRACE-FO data to inverse the groundwater changes in the Beijing-Tianjin-Hebei region,and used the Sentinel-1 data to calculate the rate of deformation in the region by small baseline subset interferometry(SBAS-InSAR).To study the correlation between groundwater change and rainfall on the basis of groundwater changes analysis,and in turn to obtain the correlation between surface subsidence and groundwater changes.The results show that the groundwater storage in Beijing-Tianjin-Hebei region have a decreasing trend from 2003 to 2020,with the change rate reaching-11.4 mm/a,and the annual variation of rainfall is great,which has an impact on the loss of groundwater storage;Among the Beijing-Tianjin-Hebei region,the surface deformation in Beijing lags behind the groundwater change by about 3 months,and there is a strong correlation between groundwater change and surface deformation,with a correlation coefficient of 0.758.
作者
费太政
常晓涛
朱广彬
刘伟
陈逸峰
FEI Taizheng;CHANG Xiaotao;ZHU Guangbin;LIU Wei;CHEN Yifeng(College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;Land Satellite Remote Sensing Application Center,MNR,Beijing 100048,China)
出处
《测绘科学》
CSCD
北大核心
2023年第1期140-147,共8页
Science of Surveying and Mapping
基金
国家自然科学基金项目(42174041)
