[en] This paper reports from investigations on the robustness of estimated rates of intraplate motion from the continuous GPS project BIFROST (Baseline Inferences from Fennoscandian Rebound Observations, Sealevel and Tectonics). We study loading effects due to ocean, atmosphere and hydrology and their impact on estimated rate parameters. We regularly find the admittance of a modelled perturbation at less than fifty percent of the full effect. We think that the finding relates to a difficult noise situation at all periods, and that a satisfying model for the dominating noise source has not been found yet. An additional reason for low admittance is found in the mapping process of the no-fiducial network solution into a conventional reference frame.
Disciplines :
Physics Earth sciences & physical geography
Identifiers :
UNILU:UL-ARTICLE-2008-949
Author, co-author :
Scherneck, Hans-Georg; Chalmers University of Technology, Onsala Space Observatory, Sweden
Johansson, Jan M.; Chalmers University of Technology, Onsala Space Observatory, Sweden
Koivula, Hannu; Finnish Geodetic Institute, Masala, Finland
van Dam, Tonie ; European Centre for Geodynamics amd Seismology
Davis, James L.; Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
Language :
English
Title :
Vertical crustal motion observed in the BIFROST project