Geophysical Methods:
- Seismic Refraction/Reflection
- Downhole/Crosshole Seismic Profiling
- Shear-wave Velocity/Dispersion (NEHRP/IBC Site Classification)
- Electrical Resistivity Profiling (Terrestrial and Marine)
- Terrain Conductivity
- Ground Penetrating Radar (Terrestrial, Marine & Borehole)
- Magnetics
- Electromagnetic Induction
- Side Scan Sonar
- Sub-Bottom Profiling
- Gravity
- Crosshole Sonic Logging