BCGS Technical Talk – August 27, 2020

Speaker: Jonathan Rudd, Dias Airborne

Title: Introducing two airborne systems with SQUID sensor technology

Date/Time: Thursday, August 27, 2020 @ 4:30pm PST

Location: Online Webinar

Abstract:

Dias Airborne is introducing the QMAGT full tensor magnetic gradiometer (FTMG) system, and the QAMT passive EM system. These helicopter-borne systems are both built around low temperature SQUID sensor technologies that provide low-noise data acquisition. Ground-based low temperature and high temperature SQUID systems are well-established in mineral exploration industry, and their low noise advantage has brought significant benefits to many exploration programs. The QMAGT FTMG system is the product of over 20 years of research and development by the Supracon-IPHT and Anglo American – DeBeers groups. Anglo-DeBeers are operating this FTMG technology widely on their various exploration projects worldwide. The QMAGT system delivers all 9 magnetic tensors, from which the 5 independent tensors are derived for final delivery. The FTMG method brings clear advantages to exploration for kimberlites, but is also valuable in the exploration and characterization of iron ore deposits, ultramafic intrusions, and in complex structural settings – particularly where remanent magnetization is present. The QAMT system measures the Earth’s response to natural EM energy – principally lightning and solar events. The QAMT system measures all three components of the magnetic field, and uses a full-tensor MT base station, necessary for the processing, modeling and final products. The principal advantage of the QAMT system over other natural field airborne EM systems are in its ability to accurately measure all three components of the magnetic field, which significantly improves the resolution of the final imaging and modeling.

Webinar:

A recording of the webinar is available on Youtube.