三江源2003~2020年地下水储量变化分析  

Analysis on the Variation of Groundwater Storage in Three-River Headwater Region from 2003 to 2020

作　　者：张浩哲 常晓涛[1,2] 朱广彬 周苗 刘伟 ZHANG Haozhe;CHANG Xiaotao;ZHU Guangbin;ZHOU Miao;LIU Wei(College of Geodesy and Geomatics,Shandong University of Science and Technology,579 Qianwangang Road,Qingdao 266590,China;Land Satellite Remote Sensing Application Center,MNR,1 Baisheng Village,Beijing 100048,China)

机构地区：[1]山东科技大学测绘与空间信息学院,青岛市266590 [2]自然资源部国土卫星遥感应用中心,北京市100048

出　　处：《大地测量与地球动力学》2022年第3期312-317,325,共7页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(42174041);民用航天技术预先研究项目(D010103)。

摘　　要：利用时变重力场模型、GLDAS水文模型和湖泊水量变化数据反演三江源区域2003~2020年地下水储量变化,使用奇异谱分析方法对地下水变化时间序列进行分析。结果表明,2003~2012年三江源区域地下水储量整体呈现增长趋势,年增长率为0.7 cm/a;2013~2020年三江源区域地下水储量整体呈现减少趋势,年增长率为-0.3 cm/a;三江源区域地下水年度变化主要受降雨补给规律的影响,降雨对地下水的补给滞后期为2个月。We use the time-varying gravity field model,the GLDAS hydrological model and lake water volume change data to invert the changes in groundwater storage in the Three-River headwater region from 2003 to 2020.We extract the trend and periodic changes of groundwater storage through singular spectrum analysis.The result shows that from 2003 to 2012,the groundwater storage in the Three-River headwater region showed an overall increasing trend,with an annual growth rate of 0.7 cm/a;from 2013 to 2020 the groundwater storage in the Three-River headwater region showed a decreasing trend,with an annual growth rate of-0.3 cm/a.The annual variation of groundwater storage in the Three-River headwater region is mainly affected by rainfall replenishment,which lags behind the recharge of groundwater by rainfall by two months.

关 键 词：三江源区域 地下水储量 GRACE GRACE-FO 时变重力场 奇异谱分析 

分 类 号：P223[天文地球—大地测量学与测量工程]