Table 1 Geophysical techniques employed in environmental and archaeological exploration modified after G. El-Qady et al. 9
Technique | Sensitive property | Vertical resolution | Horizontal resolution | Applicationa |
|---|---|---|---|---|
Thermal | Thermal conductivity | Poor | Moderate | Yes |
Magnetic | Magnetic susceptibility | Moderate | Good | Yes |
Gravity | Density | Moderate | Moderate | Rarely |
Self-potential | Electrokinetic effect | Moderate | Moderate | No |
Electrical resistivity | Electrical resistivity | Moderate | Good | Yes |
Electromagnetic | Electrical resistivity | Moderate | Good | Yes |
Induced polarization | Electrical chargeability | Moderate | Moderate | No |
GPR | Dielectric permittivity | Good | Good | Yes |
Seismic | Seismic velocity/ density | Good | Good | Yes |
