Vertical crustal motion at tide gauges derived by analyzing GPS time series

Fei-peng Zhang, Johann Wünsch, Tonie van Dam, Gerd Gendt, Maorong Ge & Tilo Schöne
This report studies the vertical crustal motion at tide gauges by analyzing GPS (Global Positioning System) height time series of about 370 GPS stations spanning 1994.0 to 2007.0. The procedure of generating a set of homogeneous GPS time series is described in detail. To estimate the vertical rate, the time series are modelled with seasonal (annual and semiannual) waves and step functions for jumps. To improve the quality of the time series, the ocean tide...
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