The MobileMT system measures natural-field EM data, acquiring three-component airborne magnetic-field data while monitoring the horizontal electric field at a base station. Data sensitivities of this configuration are similar to those of TE-mode MT data. Synthetic 2D modeling results across a conductive body demonstrate how the host conductivity and the location of the base station affect the conductor response. The strong sensitivity of the data to the conductivity structure at the base station results in inversion results being quite sensitive to the inversion start models used. MobileMT survey data from the Grindstone Copper-Nickel-Cobalt project, New Brunswick indicate a strong correlation between conductivity highs and magnetic anomalies. 2D inversions suggest conductivity structures to be detected up to 1000–2000 m depth. Model results from a VMS exploration survey across the Broken Evil prospect, Northern Ontario show good correlation with conductivity structures derived from a previous VTEM survey, including the location of a suspected VMS body.
Presentation Date: Wednesday, September 18, 2019
Session Start Time: 8:30 AM
Presentation Time: 11:00 AM
Location: 301B
Presentation Type: Oral
