A New Moho Depth Model for Fennoscandia with Special Correction for the Glacial Isostatic Effect

Abstract In this study, we present a new Moho depth model in Fennoscandia and its surroundings. The is tailored from data sets of XGM2019e gravitationl field, Earth2014 topography seismic crustal CRUST1.0 using the Vening Meinesz-Moritz based on isostatic theory to resolution 1° × 1°. To that end, refined Bouguer gravity disturbance determined by reducing observed field for effect topography, density heterogeneities related bathymetry, ice, sediments, other components. Moreover, stripping non-isostatic effects signals mass anomalies below crust due thickening/thinning, thermal expansion mantle, Delayed Glacial Isostatic Adjustment (DGIA), i.e., future GIA, plate flexure has also been performed. As key area GIA research, particularly investigate DGIA gravimetric determination area. One may ask whether sufficiently well removed application general such an area, answer question, both with without specific removal prior determinations. numerical results yield RMS difference our HVMD19 vs. CRUST19 GRAD09 models are 3.8/4.2 km 3.7/4.0 when above strategy removing is/is not applied, respectively, mean value differences 1.2/1.4 0.98/1.4 km, respectively. Hence, study shows correction slightly significant, resulting individual changes up − 1.3 towards results. On hand, large discrepancies between along Norwegian coastline, which might be uncompensated caused tectonic motions.