izvorni znanstveni rad
European Vertical Reference Network (EUVN), solution UELN95/98, is compared with early CHAMP (EIGEN-2, EIGEN-3p, TUM-1S, TUM-2Sp, ITG-CHAMP01E, ITG-CHAMP01S, ITG-CHAMP01K) and GRACE (EIGEN- GRACE01S, GGM01S, GGM01C) gravity models. Besides CHAMP and GRACE models Earth Gravity Model 1996 (EGM96) and European gravimetric geoid 1997 (EGG97) are used in analysis. Comparisons are showing the main relation between EUVN datum and global datum. Among used gravity models GRACE- GGM01C is the best fitting EUVN gravity field. It has only slightly worst statistical characteristic than EGM96 model. GRACE-GGM01C model and EGM96 are used to check extreme values in EUVN network. They are compared with already published EUVN-EGG97 extreme values. To judge topography gravity signal in CHAMP and GRACE gravity models, they are compared with denser field of GPS/leveling points on the local Croatian territory.
EUVN; CHAMP; GRACE; EGN96; EGG97; GPS/leveling; comparison
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