Electromagnetic (EM) Surveys – Data Contour Maps or Not?
Traditionally, results of electromagnetic surveys utilizing EM instruments such as Geonics EM31 or EM61 are usually presented in contour maps. A picture is worth a thousand words -- these data contour maps, especially when drawn in colors, can be very powerful presentation materials showing details of investigation results. However, when the budget of a project is limited, it’s possible to lower the survey cost, but still achieve the same investigation goal without contour ma