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Swiss Journal of Geosciences

Table 4 Zero-shift cross-correlation values of the surface and the tunnel gravity misfit with topography for each density model

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

Density model

Surface–topo xcorr

Tunnel–topo xcorr

Model 1

− 0.340

0.324

Model 2

0.014

0.088

Model 3

− 0.142

0.197

Model 4

− 0.500

0.466

Model 5

− 0.844

0.842

Model 6

0.728

− 0.593

Model 7

− 0.019

0.292

  1. To compute the cross-correlation, the topography along the model line has been sampled as the same x-coordinate as the gravity data, as shown in Fig. 8
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