Study on the vertical deformations induced by terrestrial water storage changes in Huang-Huai-Hai river basin  

作　　者：Liansheng Deng Yugang Xiao Qusen Chen Feifei Liao Zhao Li 

机构地区：[1]School of Electrical and Electronic Information Engineering,Hubei Polytechnic University,Huangshi 435003,China [2]Hubei Luojia Laboratory,GNSS Research Center,Wuhan University,Wuhan 430079.China [3]Changjiang Spatial Information Technology Engineering Co.,Ltd.,Wuhan 430010,China

出　　处：《Geodesy and Geodynamics》2024年第4期352-365,共14页大地测量与地球动力学（英文版）

基　　金：funded by the National Natural Science Foundation of China (NO. 42104028, 42174030 and 42004017);the Project Supported by the Open Fund of Hubei Luojia Laboratory (Grant No. 220100048 and 230100021);Program for Hubei Provincial Science and Technology Innovation Talents (Grant No. 2022EJD010)

摘　　要：Terrestrial water storage(TWs)variations are associated with water mass movements,which may cause the deformation displacements of the Global Navigation Satellite System(GNSS)stations.This study investigates the spatio-temporal Tws variations and addresses the relationship between deformation variations observed in the Huang-Huai-Hai River Basin(HHHRB)and local hydrological features.Results indicate that the vertical velocities at the GNSS stations induced by TWS changes are relatively small,and the impacts of the terrestrial water storage changes are mainly reflected in the changes of seasonal characteristics.Although there is a downward TWS trend from 2011 to 2022 in most HHHRB areas,velocities from the vertical displacements of both Gravity Recovery and Climate Experiment(GRACE)and GRACE Follow-On(GFO)and the GNSS reflect that the HHHRB is undergoing an uplift process,while the magnitude of the GRACE/GFO derived velocities is much smaller than that of the GNSS solutions.Common hydrological deformations estimated from GRACE/GFO and GNSS measurements reveal that the TWS-derived displacements can explain 54.5%of the GNSS seasonal variations,with the phases of terrestrial water storage advancing by about one month relative to GNss common signal phases.Moreover,the decrease of the groundwater storage in the HHHRB has been accelerating since 2008.After reaching its lowest level around mid-2020,it began to rise rapidly,which might be closely related to the implementation of the South-North Water Transfer Central Project.

关 键 词：Terrestrial waterstorage GRACE GNSS Vertical deformations Huang-Huai-Hairiverbasin 

分 类 号：P228.4[天文地球—大地测量学与测量工程] P332[天文地球—测绘科学与技术]