Electromagnetic (EM) Survey

Frequency Domain Electromagnetic induction (FDEM) involves generating an electromagnetic field which induces current in the earth which in turn causes the subsurface to create a magnetic field. By measuring this magnetic field, subsurface properties and features can be deduced.

Common applications of FDEM include identifying UXO, metallic objects, aquifers and equated presence of salt water intrusion in groundwater investigations, mapping leachate in environmental investigations, mapping aggregate deposits for quarry operators, mapping permafrost and other geologic features in geotechnical engineering.