1887
Volume 39 Number 8
  • ISSN: 0263-5046
  • E-ISSN: 1365-2397

Abstract

Abstract

We propose an unmanned aerial system fully dedicated to magnetic surveying in a variety of contexts ranging from small and shallow objects or pipelines detection to large-scale geological mapping: the Easymag system. Four major requirements are identified if one wishes to efficiently acquire quality magnetic data at such variable scales: 1- the accuracy of the magnetic acquisition must be better than the lowest expected signal according to the application (usually a few nT or lower); 2- the navigation and positioning must be precise enough to compete with ground operators with centimetre accuracy; 3- the flight flexibility must allow contrasting flight domains with topographic draping at any height; 4- the efficiency on the field must compete with existing carriers. Each of these aspects are investigated to demonstrate Terremys’ ability to perform efficient magnetic surveys. As a first case study, a drone magnetic acquisition for archaeological purposes is presented in comparison with a ground survey of the same area. Ground and drone surveys can lead to similar results. To demonstrate the ability to acquire magnetic data in different flight domains with the same system, a second case study focusing on a multiscale analysis is presented.

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2021-08-01
2021-09-27
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References

  1. Alken, P., Thébault, E., Beggan, C.D., Amit, H., Aubert, J., Baerenzung, J., Bondar, T.N., Brown, W.J., Califf, S., Chambodut, A. and Chulliat, A., et al.
    , [2021]. International Geomagnetic Reference Field: the thirteenth generation.Earth, Planets and Space, 73, 49.
    [Google Scholar]
  2. Blakely, R.J.
    [1995]. Potential Theory in Gravity and Magnetic Applications: Cambridge University Press.
    [Google Scholar]
  3. Bronner, A., Munschy, M., Sauter, D., Carlut, J., Searle, R. and Maineult, A.
    [2013]. Deep-tow 3C magnetic measurement: Solutions for calibration and interpretation.Geophysics, 78, J15–J23.
    [Google Scholar]
  4. Coyle, M., Dumont, R., Keating, P., Kiss, F. and Miles, W.
    [2014]. Geological Survey of Canada Aeromagnetic Surveys: Design, Quality Assurance, and Data Dissemination.
    [Google Scholar]
  5. D’Errico, J.R.
    [2006]. Understanding Gridfit.
    [Google Scholar]
  6. Gavazzi, B., Le Maire, P., Munschy, M. and Dechamp, A.
    [2016.] Flux-gate vector magnetometers: A multisensor device for ground, UAV, and airborne magnetic surveys.The Leading Edge, 3.
    [Google Scholar]
  7. Gavazzi, B., Alkhatib-Alkontar, R., Munschy, M., Colin, F., and Duvette, C.
    [2017]. On the Use of Fluxgate 3-Axis Magnetometers in Archaeology: Application with a Multi-sensor Device on the Site of Qasr ‘Allam in the Western Desert of Egypt: Fluxgate 3-Axis Magnetometers in Archaeology:A Multi-sensor Device: Archaeological Prospection, 24, 59–73.
    [Google Scholar]
  8. Gavazzi, B., Le Maire, P., Mercier de Lépinay, J., Calou, P. and Munschy, M.
    [2019]. Fluxgate three-component magnetometers for cost-effective ground, UAV and airborne magnetic surveys for industrial and academic geoscience applications and comparison with current industrial standards through case studies.Geomechanics for Energy and the Environment11.
    [Google Scholar]
  9. Komac, M., Benighaus, C., Kozlovskaya, E, Ajjabou, L., MacCallum, C.
    [2020]. Integrating new tactics for mineral exploration and Social License to Operate into geoscientists’ training and life-long learning: Lessons learned through the INFACT Project.European Geologist, 50, 49i53.
    [Google Scholar]
  10. Le Maire, P., Bertrand, L., Munschy, M., Diraison, M. and Géraud, Y.
    [2020]. Aerial magnetic mapping with a UAV and a fluxgate magnetometer: a new method for rapid mapping and upscaling from the field to regional scale.Geophysical Prospecting, 68, 2307–2319.
    [Google Scholar]
  11. Malehmir, A., Dynesius, L., Paulusson, K, Paulusson, A., Johansson, H., Bastani, M., Wedmark, M. and Marsden, P.
    [2017]. The potential of rotary-wing UAV-based magnetic surveys for mineral exploration: A case study from central Sweden.The Leading Edge, 36, 552–557.
    [Google Scholar]
  12. Munschy, M. and Fleury, S.
    [2011]. Scalar, vector, tensor magnetic anomalies: measurement or computation.Geophysical Prospecting, 59, 1035–1045.
    [Google Scholar]
  13. Munschy, M., Boulanger, D. Ulrich, P. and Bouiflane, M.
    [2007]. Magnetic mapping for the detection and characterization of UXO: Use of multi-sensor fluxgate 3-axis magnetometers and methods of interpretation.Journal of Applied Geophysics, 61, 168–183.
    [Google Scholar]
  14. Nabighian, M.N., Grauch, V.J.S., Hansen, R.O., LaFehr, T.R., Li, Y., et al.
    [2005]. The historical development of the magnetic method in exploration.Geophysics, 70, ND33–ND61.
    [Google Scholar]
  15. Reddé, M., Nuber, H.U., Jacomet, S., Schibler, J., Schucany, C., Schwarz, P.-A., Seitz, G., Ginella, F., Joly, M., Plouin, S., Hüster Plogmann, H., Petit, C., Popovitch, L., Schlumbaum, A., Vandorpe, P., Viroulet, B., Wick, L. J.-J., Gissinger, B., Ollive, V. and Pellissier, J.
    [2005]. Oedenburg. Une agglomération d’époque romaine sur le Rhin supérieur: Fouilles françaises, allemandes et suisses à Biesheim-Kunheim (Haut-Rhin).Gallia, 62, 215–277.
    [Google Scholar]
  16. Tuck, L. E., Samson, C., Laliberté, J., and Cunningham, M.
    [2021], Magnetic interference mapping of four types of unmanned aircraft systems intended for aeromagnetic surveying:Geoscientific Instrumentation, Methods and Data Systems, 10, 101–112.
    [Google Scholar]
  17. Walter, C.A., Braun, A. and Fotopoulos, G.
    [2019]. Impact of three-dimensional attitude variations of an unmanned aerial vehicle magnetometry system on magnetic data quality: Impact of attitude variations on magnetic data.Geophysical Prospecting, 67, 465–479.
    [Google Scholar]
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