Local Geoid Determination Using Variable Surface Densities

Abstract

Local gravimetric geoid determination was carried out in the test region of Sóskút. In this solution 1610 point gravity data as well as a high resolution DTM were used. The latest Hungarian gravimetric geoid solution of the BUTE was chosen as a reference for the local geoid determination. From the point gravity anomalies and the elevation data a surface density model has been derived. Afterwards the surface density data were used for the calculation of the terrain-corrections and the indirect effect. The calculations were made with constant density values too. The difference between the two solutions reached the maximum of 2 mm.