Fig. 10
Terrain-adaptation gravity correction due to each geological unit (ranging from North to South on the x-axis) and as a function of the selected surface gravity points (shown at their location along the model line on the y-axis from North (top) to South (bottom)). The gravity values shown here are for a reference density of 1000 kg \(\cdot\) m−3. The variations depicted here depend on each unit’s geometry and the distance between the unit and the selected gravity point. The mainly diagonal structure indicates that units tend to affect primarily the gravity points close by along the profile, with the exception of the widest units at the beginning and the end of the model line. For given units (i.e. along a single column) some gaps are present between non-zero values, due to the different elevation change between the unit and the gravity points. The thin horizontal lines, plotted for each unit along the y-axis indicate the northern and the southern boundary of the associated unit, hence showing how far beyond its own boundaries a geological unit is affecting the gravity points