A continuous GPS based velocity field for Norway, using Kriging
2011
We will present new velocity results for the Norwegian GPS network for all stations with sufficient data. The three GPS geodetic processing softwares GIPSY, GAMIT and Berneese will be used and compared. To establish a continuous velocity field for Norway, the spatial linear interpolation algorithms (kriging) will be employed both on the daily GPS coordinates as well as the derived station velocities. Velocity estimates on time-series shorter than 2.5 years are very uncertain. In this study, we show improvements in the estimation of reliable velocity estimates on short time-series when we include predictions based on kriging from the rest of the network. Statistical properties of the velocity field will also be investigated.
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