Articles | Volume 15, issue 4
Nat. Hazards Earth Syst. Sci., 15, 875–884, 2015
https://doi.org/10.5194/nhess-15-875-2015
Nat. Hazards Earth Syst. Sci., 15, 875–884, 2015
https://doi.org/10.5194/nhess-15-875-2015
Research article
21 Apr 2015
Research article | 21 Apr 2015

Accuracy of velocities from repeated GPS measurements

V. Akarsu et al.

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Latest update: 28 Sep 2022
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Short summary
Deformation rates obtained using repeated GPS measurements from as short as 8--12h are severely biased. GIPSY processing results from a global GPS network revealed that 60--70% of the horizontal and 100% of the vertical velocities are not usable. GIPSY processing is equivalent to relative positioning in which the baseline lengths to reference stations are at several hundred kilometers. This scale requires that the session length for GPS campaigns needs to be no shorter than 24h.
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