DBPapers
DOI: 10.5593/SGEM2014/B22/S9.059

STRAIN GAUGE ROSETTES CONSTRUCTED ON THE EXTENSIVE GPS NETWORK AND ITS APPLICATION IN GEODYNAMICAL RESEARCH

A. Araszkiewicz
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-11-7 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 2, 473-480 pp

ABSTRACT
The main goal of presented research was to determine whether the changes of GPS baselines allow for precise and reliable deformation rates designation. The basic task was to determine the optimal method for the GPS data processing, so as to obtained baselines were minimally affected by systematic errors. The study was carried out based on GPS data from 283 EUREF Permanent Network from period 1996-2010. The GPS processing of the 15-years observations was done using the GAMIT/GLOBK software. The entire network was divided into triangular elements (according to Delaunay method). Baselines from ‘free solution’ were the basis for further study. This was done to eliminate network distortion related to frame realizations. Time analysis allowed to determine linear strain rate of all baselines, which were used to calculate the strain rates of each triangle (similar to the strain gauge rosettes). The results are very promising, but in tectonic active areas, where the geological structure is varied, coverage of the stations is not sufficient.

Keywords: GPS, time series, strain rates, deformation