1887
Volume 2 Number 2
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

ABSTRACT

Magnetic and very low frequency electromagnetics (VLF) surveys at an Antique iron mine near Saales (France) revealed several large magnetic anomalies (of the order of a few hundred nT), strong electrical conductivity contrasts (10–1000 Ωm) and out‐of‐quadrant VLF phases ( >90°).To define both the location and the vertical extent of the underground artefacts, we interpret our magnetic data with Euler deconvolution and a 2D wavelet transform that combines maps of the total field and its gradient. We also explain out‐of‐quadrant VLF phases using simple 3D EM forward modelling. A joint interpretation of magnetic, VLF and topography data enables us to locate iron‐ore exploitation trenches, Antique iron furnaces and their surrounding slags at depths between 1 and 3 m, in good agreement with results obtained during a recent road construction.

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2004-03-01
2024-04-27
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References

  1. AgarwalB.N.P. and ShawR.K.1996. Comment on ‘An analytic signal approach to the interpretation of total magnetic anomalies’ by Shuang Qin. Geophysical Prospecting44, 911–914.
    [Google Scholar]
  2. BlakelyR.J.1996. Potential Theory in Gravity & Magnetic Applications.Cambridge University Press.
    [Google Scholar]
  3. CarcioneJ.M.1996. Ground radar simulation for archaeological applications. Geophysical Prospecting44, 871–888.
    [Google Scholar]
  4. DurrheimR.J. and CooperG.R.J.1998. EULDEP: A program for the Euler deconvolution of magnetic and gravity data. Computer & Geosciences24, 545–550.
    [Google Scholar]
  5. HesseA., BossuetG. and ChoquierA.1986. Reconnaissance électrique et électromagnétique de sites et de structures de métallurgie ancienne. Prospezioni Archeologiche10,71–77.
    [Google Scholar]
  6. LeypoldD.1996. La métallurgie du fer dans le massif vosgien, la vallée de la Bruche de l’Antiquité au XIX° siècle. Société Savante d’Alsace, Strasbourg.
    [Google Scholar]
  7. Mahé‐Le CarlierC.1997. Caractérisation pétrographique et chimique d’analogues de déchets vitrifiés actuels : les scories de la métallurgie ancienne. Etude de l’altération naturelle et expérimentale. Partie I : Pétrographie et archéométrie. Thesis, Institut National Polytechnique de Lorraine, Nancy.
    [Google Scholar]
  8. MarsonI. and KlingeleE.E.1993. Advantages of using the vertical gradient of gravity for 3‐D interpretation. Geophysics58, 1588–1595.
    [Google Scholar]
  9. MaurielloP., MonnaD. and PatellaD.1998. 3D geoelectric tomography and archaeological applications. Geophysical Prospecting46, 543–570.
    [Google Scholar]
  10. MikhailovV., GaldeanoA., DiamentM., GvishianiA., AgoyanS., BogoutinovS., GraevaE. and SailhacP.2003. Application of artificial intelligence for Euler solutions clustering. Geophysics68, 168–180.
    [Google Scholar]
  11. NabighianM.N.1974. Additional comments on the analytic signal of two‐dimensional magnetic bodies with polygonal cross‐section. Geophysics39, 85–92.
    [Google Scholar]
  12. RoestW.R., VerhoefJ. and PilkingtonM.1992. Magnetic interpretation using the 3‐D analytic signal. Geophysics57, 116–125.
    [Google Scholar]
  13. SailhacP., GaldeanoA., GibertD., MoreauF. and DelorC.2000. Identification of sources of potential fields with the continuous wavelet transform: Complex wavelets and application to aero‐magnetic profiles in French Guiana. Journal of Geophysical Research105, 19 455–19 476.
    [Google Scholar]
  14. SailhacP. and GibertD.2003. Identification of sources of potential fields with the continuous wavelet transform: Two‐dimensional wavelets and multipolar approximations. Journal of Geophysical Research108, 2262, doi:10.1029/2002JB002021.
    [Google Scholar]
  15. SilvaJ.B.C., BarbosaV.C.F. and MedeirosW.E.2001. Scattering, symmetry, and bias analysis of source‐position estimates in Euler deconvolution and its practical implications. Geophysics66, 1149–1156.
    [Google Scholar]
  16. ThompsonD.T.1982. EULDPH: A new technique for making computer‐assisted depth estimates from magnetic data. Geophysics47, 31–37.
    [Google Scholar]
  17. WardS.H. and HohmannG.W.1987. Electromagnetic theory for geophysical applications. In: Electromagnetic Methods in Applied Geophysics, Vol. 1 (ed. M.N.Nabighian ), pp. Society of Exploration Geophysicists.
    [Google Scholar]
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