Hybrid seismic characterisation of the subsurface at the North portal of the base tunnel; 2 profiles totalling 1 km, depth of investigation 150 m
| Category | Engineering geology |
| Country | Austria |
| Project period | Nov - Dec 2005 |
| Number of lines | 2 |
| Total length (m) | 1,000 |
| Depth (m) | 150 |