Research on groundwater storage and surface subsidence in Huangshui Valley based on GRACE and Sentinel-1A

doi:10.13474/j.cnki.11-2246.2024.0609

Abstract

Abstract: GRACE/GRACE-FO and GLDAS data are used to invert the groundwater changes in 2019—2022 in Huangshuang Valley area. And SBAS-InSAR technology is used to obtain the simultaneous rate of surface subsidence in the region, which is combined with the precipitation data to study the correlation between surface subsidence and groundwater changes in Huangshuang Valley area. The results show that: ① The overall direction of groundwater loss in Huangshui Valley is from northwest to southeast. ②Groundwater changes have a greater impact on the more serious surface deformation in the region. ③The greater the surface deformation (uplift), the more groundwater reserves are lost. The upper reaches of the Yellow River have the greatest uplift, and the loss of groundwater reserves is the greatest. ④ The surface deformation in the northern part of the Huanghe Valley is not sensitive to changes in groundwater reserves, while the surface deformation in the southern part is more sensitive to changes in groundwater reserves. The conclusions of this paper can provide important scientific reference for local geological disaster warning, sustainable utilization of water resources, ecological protection and high-quality green development.

Key words: GRACE, GLDAS, SBAS-InSAR, groundwater inversion, surface subsidence

CLC Number:

P237

HU Xiangxiang, KE Fuyang, SHI Yaya, WU Tao, LIU Baokang, PANG Dongdong, ZHANG Lili, SONG Bao. Research on groundwater storage and surface subsidence in Huangshui Valley based on GRACE and Sentinel-1A[J]. Bulletin of Surveying and Mapping, 2024, 0(6): 46-52.

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