Our Services

Electrical Resistivity (ER)

Versatile subsurface imaging tools for the most demanding geologic, environmental, and hydrogeologic investigations.

We make resistivity measurements by introducing an electrical current into the earth between a pair of electrodes and measuring the potential electric current between a second pair of electrodes. A linear electrode array produces a 2D cross-section of the subsurface environment.

Applications
  • Delineating the depth, thickness, and lateral extent of geologic strata (sands and gravels associated with paleo-stream channels)
  • Locating geologic and structural anomalies
  • Mapping contaminant plumes
  • Locating and delineating landfills
  • Mapping subsurface voids and sinkholes

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