Abstract:Using GAMIT software and observation data from 58 CORS stations in Sichuan province from 2012 to 2014, precipitable water vapor (PWV) is deduced. The spatial and temporal distributive characteristics and variation trends of PWV in Sichuan province in the past three years are analyzed. The results show that the spatial distribution of PWV is higher in the east than in the west. Using multiple linear regression and principal component analysis, the relation of PWV and terrain can be linearized. Taking the CHDU, YBIN and HONY stations in Sichuan province as examples, the method of empirical mode decomposition combined with spectrum analysis is used to reflect the various periodic characteristics. The results show that the three stations have several PWV cycles.
YANG Di,DING Yihang,WU Kangliang et al. Analysis of Precipitable Water Vapor and Its Variations in Sichuan Using CORS Observation Data[J]. jgg, 2018, 38(6): 587-590.