Geophysical Techniques

Gehrig, Inc. provides a multitude of near surface imaging capabilities that are used in a variety of field applications. Since we live on a heterogeneous planet where subsurface conditions can drastically change in all directions, no single geophysical technology will work well in all areas. Gehrig, Inc. relies on its extensive experience in the selection and design of an applied geophysical techniques.

Applications for geophysical exploration include the following:

  • Pavement thickness analysis (concrete or asphalt)
  • Steel reinforcement and grade beam locations
  • Air or water filled void detection and delineation
  • Tree root mapping
  • Bedrock mapping
  • In-situ engineering properties (i.e. modulus) of soil and rock
  • Rippabilility studies
  • Vibration monitoring
  • Karst topography
  • Groundwater and subsurface moisture mapping
  • Lithological studies
  • Utility delineation
  • Underground storage tank (UST) and septic tank detection
  • Archeological studies
  • Vs30 studies
  • Thermal conductivity studies
  • Electrical grounding