Array types | Measured potential | Advantages | Disadvantages |
|
| High signal strength; Sensitive vertical variations | Poor horizontal coverage Less sensitive to 3D structures High voltage |
|
| Sensitive vertical variations Better resolution for shallow | Poor horizontal coverage |
|
| Better target detection Suitable for targeting deep Good horizontal coverage High signal strength Less sensitivity Better data resolution | Many near-to-zero potential values Singularity problem in data acquisition Complicate the inter-pretation |
|
| Better target detection Satisfies reciprocity No remote-electrode effects Very sensitive to horizontal variations Easy acquisition of field data in built-up areas. Most sensitive array to 3D structure | Insensitive to vertical variations Many near-to-zero potential values Singularity problem in data acquisition Decrease in signal strength with Often suffer from a poor signal-to-noise ratio |
Pole-pole
|
| Widest horizontal coverage Deepest depth of investigation | Poorest resolution Remote-electrode effects Other electric sources can easily affect the data All the data do not meet reciprocity Systematic error into the inversion |