COWI uses electrical resistivity methods to achieve the following aims which are common among our customers:

• Characterising the geology
• Mapping contaminant plumes
• Determining the depth to aquitard layers
• Identifying the extent of high aquifers
• Mapping saltwater intrusion

CVES profiling

Ideal for shallow environmental and water resources investigations, CVES is an automated geoelectrical mapping method which makes it possible to obtain large amounts of data in a short period of time.

The survey is taken along a profile line where the apparent resistivity is measured at various focus depths. We combine state-of-the-art equipment, innovative protocols and advanced analytical techniques to provide the customer with high quality data at increased production rates and lower costs.

Direct current soundings

The traditional DC sounding method determines the vertical resistivity layering in the subsurface. The depth to the focus depth increases as the current and potential electrodes are expanded from a fixed location