The use of UAVs (unmanned aerial vehicle) for conducting EM surveys is receiving a lot of interest. Using a UAV to carry the survey instrument allows the surveyor to cover more ground, survey in areas that are not amenable to ground vehicles, or survey areas of unstable ground too dangerous for manned operations.
For many surveys with these characteristics, our GEM2 ski is the ideal instrument. It is suitable for: locating underground pipes, tanks & other structures locating pipelines & other features in shallow water monitoring leach heaps, lagoons and buried tanks locating groundwater contamination from brine or chemicals.
To help those interested in aerial applications of the GEM2, we have developed several lightweight versions of our instruments.
The GEM-2A is our standard airborne instrument. It is a programmable, broadband EM sensor for Geologic investigation, ground water surveys, and mineral exploration. The system utilises a single set of transmitter-receiver coils for all frequencies, rendering an advanced HEM system with high sensitivity, light weight, and minimal drift.
The frequencies are selectable and it also includes power line monitoring. The GEM-2A has both horizontal coplanar and coaxial coil sets The tow cable provides DC power and digital communications. The software also converts the data to apparent conductivity at each frequency and to apparent susceptibility at the lowest frequency.
#airborne electromagnetics, #airborne electromagnetic survey #airborne em