Electromagnetic Survey

Electricomagnetic (EM) survey uses the response of the ground to the propagation of electromagnetic field. EM methods are sensitive to variations in conductivity values of subsurface materials and can identify anomalous areas due to the presence of void, fluids, metals and other variations. Unlike electrical resistivity method, no ground contact is required for EM survey. Therefore, it eliminates direct electrode coupling problems and allows a rapid data acquisition.

Landfill surveys
Detection of geological and artificial cavities
Land contamination mapping
Groundwater exploration
Detection of buried storage tank and waste drums


Worldwide Distributors

Specialty Devices Inc.
2905 Capital St.
Wylie Texas 75098

972-429-7240 office

European Distributors

Aquifer Advies bv
Ben ten Toom
Dr. Langeveldplein 6
3361 HE Sliedrecht
0184 – 413147
06 – 24745947

About SDI

For over 30 years, SDI has designed and manufactured bathymetric and sub-bottom survey systems, sediment coring devices, and other specialized survey systems. SDI also provides geospatial, geophysical, hydrographic, sub-bottom, and sediment sampling services.