GEOPHYSICS SURVEY
The Company has developed its capabilities in the use of Geophysics when applied to the investigation of sub-surface characteristics of both natural and man-made elements. Multi-Channel Analysis of Surface Waves is a seismic method for the Characterization of the shear wave velocity of the sub-surface. The results can be used to determine the IBC Vs100 site classification of a study area: other applications include foundation engineering, void detection, landfill and in-fill investigations, and stratigraphic and lithological studies.
Electrical Resistivity Tomography (ERT) is a geophysical technique for imaging sub-surface structures from electrical resistivity measurements made at the surface. 3D ERT can be applied to fault investigation, ground water table investigation and the tracing of contamination. ERT is also used for the detection of anomalies in reinforced concrete structural members. Ground Penetrating Radar can also be used in a similar way to ERT, either for the detection of sub-surface services and utilities on a site, or for the locating of reinforcing bar in concrete or the detection of voids beneath concrete or asphalt.
The Earth Sciences Division of WES possesses a wealth of experience in the interpretation of data obtained using Geophysical methods of investigation.