Abstract:High precision vertical deformation velocity field can be obtained by long-term GPS continuous observation, but it is not clear whether GPS campaign observation data can be used for vertical deformation monitoring. In this paper, we process the observation data of 260 continuous stations and 2 000 GPS campaign stations in Chinese mainland from 1999 to 2019. The time series and velocity field of each station are obtained. We compare and analyze the vertical deformation velocity field of 226 continuous stations and 226 campaign stations. The results show that the error of vertical deformation rate of 95% of continuous GPS stations are less than 0.5 mm/a and 50% of campaign GPS stations reach more than 1 mm/a. The residual value of the vertical deformation rate of about 40% of campaign stations and continuous stations are greater than 2 mm/a, and the vertical deformation trend of about 50% of campaign GPS stations are inconsistent with that of continuous stations. The vertical deformation monitoring accuracy of campaign GPS stations in the western region is higher than that in the eastern region, which may be related to the differences in observation environment and station stability between the eastern and western regions. Based on the analysis of the accuracy and residuals of vertical deformation velocity field of GPS continuous stations and campaign stations, we consider that the campaign GPS observations from mainland China are not suitable for monitoring the area with vertical deformation less than 2 mm/a.
WANG Dongzhen,ZHAO Bin,YU Jiansheng et al. Can Vertical Crustal Deformation Be Monitored by Campaign GPS?——Taking Chinese Mainland as Example[J]. jgg, 2021, 41(3): 290-295.