Exercise 6
Calculate the geometric factors, measured voltage differences and signal-to-noise ratio (SNR, the ratio of the field measured voltage difference to the noise) for a Wenner and dipole-dipole array based on the information given (fill out the table below).
Current injected [I]: 2 mA
Apparent resistivity [ρ]: 250 ohm-m
Noise level: 15 mV
Array | a(m) | n | Kg | V(mV) | SNR |
Wenner | 5 | – | |||
Dipole-dipole | 3 | 3 |