FIXED LOOP AIRBORNE TRANSIENT ELECTROMAGNETICS

Em System
• High power transmitter to 25 Kw
• Large ground based transmitter loops (5km x 2km)
• Multiple time windows up to 31
• Time windows out to 400ms.
• Low base transmitter frequency 1Hz to 32Hz.
• Horizontal and Vertical Receiver Coils.
• Optional magnetometer system for mapping.

Application
FLAIRTEM is used;
• In most environments.
• For direct detection of massive sulphides.
• For locating mineralisation beneath conductive overburden.
• For drape flying EM in rugged terrain.




Data Processing
• Most data processing is done on-site with fast Portable Computers.
• Digital EM data is merged with navigational data.
• Profiles and contours can be produced on-site
• Post Processing includes overburden stripping, and decay constants.

Data Interpretation
• Interpretation is performed by experienced Geophysicists using advanced modelling techniques.
Models include;
• Layered half-space.
• 2D and 3D buried conductors.
• Interpretations can be presented as plans & sections.