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Swiss Journal of Geosciences
Fig. 11 | Swiss Journal of Geosciences

Fig. 11

From: A gravimetric assessment of the Gotthard Base Tunnel geological model: insights from a novel gravity terrain-adaptation correction and rock physics data

Fig. 11

Point-wise misfit for the surface gravity values, with a focus on the 45 to 50 km section along the model line within the same geological unit. Models 5 (low density) and 6 (high density) present short-wavelengths symmetric steps, which strongly correlate with the position of two pairs of surface gravity points at 47 and at 48 km distance acquired at significantly different elevations. These misfit steps do not appear or are smaller for the other density models, which means that measurements taken at different elevations have the potential to constrain local densities. The point-wise misfit represented in the figure is defined as synthetic minus observed gravity value

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