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Electromagnetic Surveys

Back to Techniques

The electromagnetic (EM) technique is based on the response of the ground to the propagation of an electromagnetic field created by the survey instrument. The The EM survey technique has a number of different applications and can be applied to both reconnaissance and detailed ground investigations. Main components of the EM instrument are a transmitter (for the generation of primary field) and receiver (measurement of the induced secondary field).

Typical applications are:
  • Detection of buried metallic objects
  • Contaminant mapping
  • Minerals exploration (ground and airborne)
  • Groundwater exploration