Fig. 1.
Fig. 2.
Fig. 3.
Subsurface layers interpreted from the ERT results (own research)
| Layer | Thickness | Resistivity [Ωm] | Interpreted lithology |
|---|---|---|---|
| I | several metres | 185–700 | unsaturated, loose sands with variable grain size, fine sand, and silty sand |
| II | ~10 m | 10–185 | saturated sands, partly with clay and silt |
| III | > 10 m | < 10 | saturated alluvial muds (silty clays with organics), plastic |
ERT survey parameters for the three profiles (own research)
| Parameter | Profile 1a | Profile 1b | Profile 2 |
|---|---|---|---|
| Location | 1 | 1 | 2 |
| Protocol | Gradient xl | Dipole-dipole | Gradient xl |
| Profile length [m] | 120 | 120 | 120 |
| Prospection depth [m] | 24–26 | ~30 | 24–26 |
| RMS misfit [%] | < 5 | ~15 | < 5 |