TY - JOUR N2 - The paper deals with large-scale crustal deformation due to hydrological surface loads and its influence on seasonal variation of GPS estimated heights. The research was concentrated on the area of Poland. The deformation caused by continental water storage has been computed on the basis of WaterGAP Hydrological Model data by applying convolution of water masses with appropriate Green’s function. Obtained site displacements were compared with height changes estimated from GPS observations using the Precise Point Positioning (PPP) method. Long time series of the solutions for 4 stations were used for evaluation of surface loading phenomena. Good agreement both in amplitude and phase was found, however some discrepancies remain which are assigned to single point positioning technique deficiencies. Annual repeatability of water cycle and demanding procedure for computing site displacements for each site, allowed to develop a simple model for Poland which could be applied to remove (or highly reduce) seasonal hydrological signal from time series of GPS solutions. L1 - http://journals.pan.pl/Content/98323/PDF/art04.pdf L2 - http://journals.pan.pl/Content/98323 PY - 2011 IS - No 2 DO - 10.2478/v10277-012-0012-y KW - GPS KW - PPP KW - hydrology model KW - surface loading A1 - Rajner, Marcin A1 - Liwosz, Tomasz PB - Commitee on Geodesy PAS VL - vol. 60 DA - 2011 T1 - Studies of crustal deformation due to hydrological loading on GPS height estimates UR - http://journals.pan.pl/dlibra/publication/edition/98323 T2 - Geodesy and Cartography ER -