Geophysics
Geophysical activity across a wide range of environments and conditions, often where intrusive methods are impractical, impossible or prohibitively expensive.
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Common methods used in geophysics include:
• Seismic refraction, reflection and vertical seismic profiling (downhole and crosshole VSP)
• Seismic (active / passive) multichannel analysis of surface waves (MASW - Vs30)
• Electrical resistivity imaging and vertical electrical sounding (ERI, VES)
• Ground penetrating radar (GPR)
• Electromagnetics - frequency and time domain (FEM, TEM)
• Potential fields – magnetic-gradiometry and micro-gravity
These methods are used across a range of geophysics applications which include:
• Depth to rock and (P-Wave) rock strength
• S-wave velocity distributions for soil stiffness
• Void mapping (karsts, sinkholes or mine shafts)
• Seismic site characterisation (Vs30)
• Weathering profile
• Contaminant mapping (seepage, leakage)
• Landfill and salinity mapping
