In Autumn 2010 a new permanent GPS station started observati ons intended to investigate the episodic displacements o f rocks in the Książ Massif, where the Geodynamic Laboratory (LG) is situated. These investigations are being made for common interpretation with water-tubes and horizontal pendulums tiltmeters registering large (one order of magnitude greate r than the tidal effects) non-periodic geodynamic signals. The studies conducted as up to date excluded instrumental and loading effects as potential reasons of those signals. The construction of water-tube tiltmeters and their measuring principles allowed to state that the strong non-tidal signals have a geodynamic nature. To support investig ation of this problem, different analysis of the GPS data are performed in appropriate scales and applying various processing methods. The applied methods refer to selected reference GPS stations in Poland and their neighbors and are aimed at reduction of disturbance effects of geophysical origin such as tectonic activity, post-glacial rebound, anthropogenic effects, etc., Ryszard Zdunek., and Obsahuje bibliografické odkazy
This paper presents results of the research on tectonic activity of the marginal sudetic fault (MSF). Velocities of points obtained from processing GPS observations in the GEOSUD network and results of national precise leveling networks have been analysed. Results of 1996-2005 GPS measurements and results of measurements of selected points for the 2006-2007 period were taken considered. The velocities calculated by means of the Bernese GPS Software 5.0 were used to test hypothesis on present-day strike-slip movement activity of the marginal sudetic fault. The relationship between the calculated velocities and the length of projection onto the fault’s line was studied. The second part contains analysis of relative vertical velocities of benchmarks, making up the 1st and the 2nd class national precise leveling lines crossing the fault line, to study its vertical activity. Velocities of horizontal and vertical changes of points on both sides of the fault were compared with models described in literature., Jan Kapłon and Stefan Cacoń., and Obsahuje bibliografii