Geodetic Fixing of Tide Gauge Benchmarks of the Australian Baseline Sea Level Monitoring Array: Results of the May 1995 GPS Campaign
In order to monitor changes in absolute sea level, the vertical motion of the crust at the tide g... more In order to monitor changes in absolute sea level, the vertical motion of the crust at the tide gauge location must also be monitored in an accurate, global terrestrial reference frame. During the last week of May 1995, five days of GPS data was observed at over 30 inland and coastal sites related to the tide gauge array. In addition, the data set includes 10 Australian Fiducial Network (AFN) sites, 3 Australian Antarctic Territory sites and 17 global sites of the International GPS Service for Geodynamics (IGS). The computations are undertaken in stages that comprise the precise orbit determination of the GPS satellites from the IGS/AFN global data set and, then estimating the positions of the inland and coastal tide gauge benchmarks. The data set and the computation procedure (including observable, orbit, and station modelling) are briefly described and the results for this epoch are presented.
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