Electromagnetic survey technology is a proven non-invasive method for measuring the apparent electrical conductivity of the ground from the surface to varying depths depending on project objectives. JDMA staff have experience using the Geonics EM31, EM34 and EM38 instruments. The EM31 explores to 6m depth, the EM34 to 30m depth and the EM38 to 1.5m depth. We have also applied electrical resistivity surveys using an OhmMapper resistivity meter in some studies. This instrument has a variable depth of exploration and offers flexibility in survey parameters.

We can assist clients with assessing survey options and determining the optimum technique and instrument for their particular application.

Typical applications include surficial geology mapping, exploration for aggregates, mapping surface and subsurface aquifers, contaminant mapping and locating buried metallic objects.