The Crustal Vertical Deformation Driven by Terrestrial Water Load from 2010 to 2014 in Shaanxi–Gansu–Ningxia Region Based on GRACE and GNSS

The terrestrial water resources in Shaanxi–Gansu–Ningxia (SGN) region are relatively scarce, and its climate change is unstable. Research on the deformation driven by load of great significance to dynamic maintenance reference station networks. In this paper, data derived from Gravity Recovery Climate Experiment (GRACE) Global Navigation Satellite System (GNSS) 2010 2014 were combined monitor spatiotemporal characteristics surface vertical caused change. single scale factor was calculated comparing CPC, WGHM, GLDAS hydrological model restore filtering leakage signal. singular spectrum analysis (SSA) method used extract principal component temporal deformation, spatial distribution analyzed. At same time, order study relationship between GRACE that GNSS, first-order term correction, Atmosphere Ocean De-aliasing Level-1B product (GAC) LOVE number correction for adopted paper. addition, a quantitative comparative both monitoring results carried out. show time-variable characterized filtered three models consistent with those GRACE. correlation coefficient Nash–Sutcliffe efficiency (NSE) values highest model, respectively; former index 0.93, while latter 0.85. crustal showed declining rate 2014. Its an obvious ladder distribution, subsidence gradually decreasing south north. weighted root mean square (WRMS) contribution resulting GAC different GNSS stations ranged 18.52% 54.82%. them close 0.70. After deducting mass impact only, WRMS corresponding decreased −8.42% 21.18%. reduced noticeably. Adding back can increase comparability terms deformation. annual amplitude phase GNSS. research help explore motion mechanism migration which benefit protection ecological environment region.