Abstract:We get the coordinate time series by solving CMONOC GNSS reference stations during 2011-2013 and calculate the non-tectonic deformation on sites produced by non-tidal ocean, atmospheric conditions, snow, and soil moisture. The GNSS vertical series has significant changes corrected by non-tectonic deformation: the amplitude and initial phase of annual motion present significant changes, and the amplitude reduced (individual sites increasing) and the narrow margin varies in different regions. The initial phase has a systematic bias before and after correction, with about 2-3 months lag, such that the systematic biases may be the effect of the GNSS sites’ overall “slow response” to geophysical factors. The change of semi-annual motion reflects principally on the amplitude, with a narrow margin of about 1 mm.[
LIANG Hongbao,LIU Zhiguang,HUANG Liren et al. Effects of Non-Tectonic Deformation on the Vertical Periodic
Motion of GNSS Reference Stations in China[J]. jgg, 2015, 35(4): 589-593.