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Annual vertical crustal displacements predicted from surface mass redistribution at GPS stations in China

ZHANG Shi-yu,ZHONG Min,YAN Hao-ming LU Yang(Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077,China)  
Annual vertical crustal displacements at 24 GPS stations in china are estimated from the global atmospheric,oceanic and hydrological mass redistributions.The amplitude variations of annual vertical motions at these stations are 5mm~10mm.A comparison is then performed for each station between the predicted results (from climatology) and the observed ones (by GPS),which reveals that there are generally good agreements in amplitude,but the phases of the predicted results are ahead one to two months to those of GPS approximately.
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