Abstract:Based on the global atmospheric model and the time series data of CORS location, we calculate the influence of atmospheric load on the crustal deformation at CORS locations using the spherical harmonic coefficient method. The results show that the influence of atmospheric load on the vertical direction of CORS location in the study area is -15.9 to 13.2 mm, and the influence on horizontal deformation is 0 to 2.7 mm. According to the change of RMS value before and after removing the influence of atmospheric load on CORS, it is concluded that removing the influence of atmospheric load on the horizontal direction of CORS time series has little improvement, but has obvious improvement on the vertical direction. According to the least square method, the crustal vertical deformation admittance(regression coefficient) of the study area varies from -0.75 to -0.43 mm/hPa. The research methods and results of this paper can be used for reference in the separation and correction of atmospheric load in CORS.
WANG Haitao,NIE Jianliang,TIAN Jie et al. Influence Analysis of Atmospheric Load Change on Position of CORS and Its Removal Study[J]. jgg, 2019, 39(11): 1159-1164.