典型文献
Analysis of terrestrial water storage changes in the Shaan-Gan-Ning Region using GPS and GRACE/GFO
文献摘要：
Both the Global Positioning System(GPS)and Gravity Recovery and Climate Experiment(GRACE)/GRACE Follow-On(GFO)provide effective tools to infer surface mass changes.In this paper,we combined GPS,GRACE/GFO spherical harmonic(SH)solutions and GRACE/GFO mascon solutions to analyze the total surface mass changes and terrestrial water storage(TWS)changes in the Shaan-Gan-Ning Region(SGNR)over the period from December 2010 to February 2021.To improve the reliability of GPS inversion results,an improved regularization Laplace matrix and monthly optimal regularization parameter estimation strategy were employed to solve the ill-posed problem.The results show that the improved Laplace matrix can suppress the edge effects better than that of the traditional Laplace matrix,and the corre-lation coefficient and standard deviation(STD)between the original signal and inversion results from the traditional and improved Laplace matrix are 0.84 and 0.88,and 17.49 mm and 15.16 mm,respectively.The spatial distributions of annual amplitudes and time series changes for total surface mass changes derived from GPS agree well with GRACE/GFO SH solutions and mascon solutions,and the correlation coefficients of total surface mass change time series between GPS and GRACE/GFO SH solutions,GPS and GRACE/GFO mascon solutions are 0.80 and 0.77.However,the obvious differences still exist in local regions.In addition,the seasonal characteristics,increasing and decreasing rate of TWS change time series derived from GPS,GRACE/GFO SH and mascon solutions agree well with the Global Land Data Assimilation System(GLDAS)hydrological model in the studied area,and generally consistent with the precipitation data.Meanwhile,TWS changes derived from GPS and GRACE mascon solutions in the SGNR are more reliable than those of GRACE SH solutions over the period from January 2016 to June 2017(the final operation phase of the GRACE mission).
文献关键词：
中图分类号：
作者姓名：
Xianpao Li;Bo Zhong;Jiancheng Li;Renli Liu
作者机构：
School of Geodesy and Geomatics,Wuhan University,Wuhan,430079,China;Key Laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University,Wuhan,430079,China;School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan,430072,China
文献出处：
引用格式：
[1]Xianpao Li;Bo Zhong;Jiancheng Li;Renli Liu-.Analysis of terrestrial water storage changes in the Shaan-Gan-Ning Region using GPS and GRACE/GFO)[J].大地测量与地球动力学（英文版）,2022(02):179-188
A类：
Shaan,GFO,mascon,SGNR
B类：
Analysis,terrestrial,water,storage,changes,Gan,Ning,Region,using,GPS,GRACE,Both,Global,Positioning,System,Gravity,Recovery,Climate,Experiment,Follow,On,provide,effective,tools,infer,surface,mass,In,this,paper,combined,spherical,harmonic,SH,solutions,analyze,total,TWS,period,from,December,February,To,reliability,inversion,results,improved,regularization,Laplace,matrix,monthly,optimal,parameter,estimation,strategy,were,employed,solve,posed,problem,show,that,can,suppress,edge,effects,better,than,traditional,standard,deviation,STD,between,original,signal,respectively,spatial,distributions,annual,amplitudes,series,derived,agree,well,correlation,coefficients,However,obvious,differences,still,exist,local,regions,addition,seasonal,characteristics,increasing,decreasing,Land,Data,Assimilation,GLDAS,hydrological,model,studied,area,generally,consistent,precipitation,data,Meanwhile,more,reliable,those,January,June,final,operation,phase,mission
AB值：
0.424975
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