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Swiss Journal of Geosciences

Table 3 Root-mean-square misfit obtained by comparing synthetic forward modelling results and corrected gravity observations, for both surface and tunnel data, for various density models

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 RMS [mGal]

Tunnel RMS [mGal]

Total RMS [mGal]

Model 1

2.83

3.85

3.37

Model 2

2.80

3.63

3.23

Model 3

2.76

3.81

3.31

Model 4

3.34

3.21

3.79

Model 5

8.82

8.67

8.75

Model 6

4.44

4.71

4.57

Model 7

2.66

3.93

3.35

  1. Model 7 is a constant density model for all units (\(\rho\)=2700 kg \(\cdot\) m−3). Surface and tunnel data points are given the same weight
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