融合卫星与地面数据研究京津冀地区弹性骨架储水系数  

Study on elastic skeleton storage coefficient in Beijing-Tianjin-Hebei region combining satellite and ground data

作　　者：张玉鹏 张永红[1] 吴宏安[1] 刘青豪 魏钜杰[1] 康永辉[1,2] ZHANG Yupeng;ZHANG Yonghong;WU Hongan;LIU Qinghao;WEI Jujie;KANG Yonghui(Chinese Academy of Surveying and Mapping,Beijing 100830,China;School of Surveying and Geographical Sciences,Liaoning Technical University,Fuxin 123000,China;College of Earth Science and Information Physics,Central South University,Changsha 410000,China)

机构地区：[1]中国测绘科学研究院,北京100830 [2]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000 [3]中南大学地球科学与信息物理学院,湖南长沙410000

出　　处：《测绘学报》2023年第4期660-669,共10页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(41874014)。

摘　　要：地下水的过量开采已经对京津冀平原地区的土层结构造成严重的破坏。本文旨在了解京津冀地区目前土层结构的健康状况,并对地下水的适宜取水位置提出建议。首先,利用GRACE-FO数据与MCTSB-InSAR技术,分别提取了2017—2019年的京津冀地区的地下水变化时序和沉降变化时序。然后,利用邻域平均方法,使得二者数据空间分辨率一致,并首次获得了京津冀地区2017、2018和2019年的弹性骨架储水系数图。最后,结合京津冀地区的地形地貌、土壤类型及各年内降雨和温度情况,对弹性骨架储水系数图进行了时空维度对比分析。研究发现,京津冀地区土层结构的平均情况正在逐渐变好,但是该地区东南方向土层结构还在继续恶化;京津冀西北地区的土层结构相对于东南地区更适合开采地下水。Due to over-exploitation of groundwater,the soil structure in the Beijing-Tianjin-Hebei Plain has been severely damaged.This study was taken to understand the health status of the current soil structure and give suggestion to the location that suitable for obtaining groundwater in the Beijing-Tianjin-Hebei area.First of all,based on GRACE-FO data and MCTSB-InSAR technology,the groundwater change sequence and subsidence change sequence of the Beijing-Tianjin-Hebei region from 2017 to 2019 are extracted respectively.Then,the neighborhood averaging method was used to achieve the same spatial resolution of the two data,and the elastic skeleton water storage coefficient maps of the Beijing-Tianjin-Hebei region in 2017,2018 and 2019 were obtained for the first time.Finally,combined with the topography,soil types,rainfall and temperature conditions in each year in the Beijing-Tianjin-Hebei region,a comparative analysis of the spatial and temporal dimensions of the elastic skeleton water storage coefficient map is carried out.The study found that the average soil structure in the Beijing-Tianjin-Hebei region is gradually getting better,but the soil structure in the southeast of the region continues to deteriorate;the soil structure in the northwest of the Beijing-Tianjin-Hebei region is more suitable for exploiting groundwater than the southeast region.

关 键 词：GRACE-FO 地下水 地面沉降 INSAR 弹性骨架储水系数 

分 类 号：P237[天文地球—摄影测量与遥感]