Details of the Abstract
| Title of paper |
Imaging deep massive sulfide deposits with multiple grounded sources and UAV-towed scalar and vector magnetic field receivers - Part 2: Inversion |
| List of authors |
Rochlitz, R., Günther, T., Kotowski, P., Becken, M., Wilhelm, A. |
| Affiliation(s) |
LIAG Institute for Applied Geophysics, Hanover, Germany, LIAG Institute for Applied Geophysics, Hanover, Germany, Institute of Geophysics, Department of physics, University of Münster, Germany, Institute of Geophysics, Department of physics, University of Münster, Germany, terratec geophysical services, Heitersheim, Germany |
| Summary | Uncrewed aerial vehicles (UAVs) can provide a cost-effective alternative to helicopters as carrier for geophysical receiver systems that match the total payload limitations of 25 kg. In this work, we present and compare inversion results of semi-airborne electromagnetic (SAEM) data recorded with two different receivers, a scalar and a vector magnetometer, acquired in two active mining areas in Namibia and Spain. Whereas the first demonstration site is easily accessible with almost no vegetation and topography, the test site in Spain is characterised by poor accessibility, height undulations up to 300m, and strong vegetation. Being able to include a total frequency range between 1 and 1024 Hz of magnetic field data provides, compared with single-receiver analysis, the great advantage of combining enhanced near-surface resolution with large depth penetration. We assess the reliability of our inversion results by performing resolution analysis as well as comparing the appearance of conductors with existing geophysical and geological information. Bothtest sites demonstrate the capabilities of our measurement design to recover comparatively small but elon-gated dyke-like conductors matching locations of know massive sulfide deposits. |
| Session Keyword | 6.0 Marine and airbone EM |
| File upload |
6.0_imaging_deep_massive_sulf_rochlitz_01.pdf
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