Outdoor anomaly UTM32 100 m
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Gravity anomaly (open-air anomaly) at the Earth’s surface, i.e. predicted gravity value minus normal heaviness (Geodetic Reference System 1980) at terrain level. The up-to-dateness of the data stock (2016) corresponds to that of the quasigeoid model GCG2016. The spatial data set is the basis for the representation of the quasigeoid in WMS severity. For this purpose, the gravity grids were sampled with a resolution of 100 m in UTM32 projection. Documentation and data sources --> Link! Gravity system: International Gravity Standardisation Net 1971 (Morelli et al., 1974) Normal heaviness: Geodetic Reference System 1980 (Moritz, 1964), no consideration of atmospheric influence Level reduction: Direct calculation of normal heaviness as a function of geographical latitude and NHN height by means of ball function development up to degree 8 Bouguer plate reduction: none Terrain correction (for grid processing only): Spherical calculation of the complete topographic effect (excl. indirect effect of topography on gravity) up to 100 km, digital terrain model with grid width 1" (approx. 25 m), cuboid method (Forsberg, 1984) near 5', outside Tesseroid method (Grombein, 2013) Reduction density/level (for grid processing only): Mainland 2 670 kg/m³/Bathymetry (North Sea, Baltic Sea, Lake Constance) 1 000 kg/m³, 0 m asl. NHN (DHHN92) Grid processing: Terrain reduction; Interpolation by collocation (Forsberg et al. 2008), grid width 30“x 45“, resampling to grid width 3.6” x 5.4”; Restoration of terrain reduction in the grid; Projection on UTM32 grid with grid width 100 m Unit: mGal = 10^-5 m/s-2 Up-to-dateness: 2016



