Electromagnetic
AGP-TEM – innovative airborne time-domain electromagnetic system
AGP-TEM surveys are used to image the conductivity (resistivity) of the earth in
3D to assist with a wide range of geoscience challenges
Advantages
- Low noise receiver and in-loop transmitter-receiver geometry provide the high spatial resolution
- Allows flexible parameter adjustment
- Broad bandwidth allows detect broadest range of resistivity values
- Enhanced sensitivity to conductive targets
The main issues to be solved:
Groundwater mapping
Identification of mineral exploration targets (conducting objects such as sulfide copper-porphyry, polymetallic mineralization, kimberlites etc.)
Study of fractures and faults
Paleochannels
Build near surface resistivity model to adjust velocity model
Key parameters
Peak moment:
up to 6 00 NIA
Repetition frequency:
12.5 – 75 Hz
Noise level:
0.2 nT/s
Pulse length:
up to 9 ms
Pulse shape:
trapezoid
Depth of investigation:
up to 600 m
Work examples
Identification of aquifers and sedimentary features in the conductive section
Copper-nickel deposits exploration
Thrust fault in the conductivity model
