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@ARTICLE{Moghadas:22332,
      author       = {Moghadas, D. and Andre, F. and Bradford, J.H. and van der
                      Kruk, J. and Vereecken, H. and Lambot, S.},
      title        = {{E}lectromagnetic induction antenna modelling using a
                      linear system of complex antenna transfer functions},
      journal      = {Near surface geophysics},
      volume       = {10},
      number       = {3},
      issn         = {1569-4445},
      address      = {Houten},
      publisher    = {EAGE},
      reportid     = {PreJuSER-22332},
      pages        = {237 - 247},
      year         = {2012},
      note         = {This research was supported by the Forschungszentrum Julich
                      (FZJ, Germany), Universite catholique de Louvain (UCL,
                      Belgium), Fonds National de la Recherche Scientifique (FNRS,
                      Belgium) and Boise State University (BSU, USA) in the
                      framework of the DIGISOIL project, financed by the European
                      Commission under the 7th Framework Programme for Research
                      and Technological Development, Area "Environment", Activity
                      6.3 "Environmental Technologies". Davood Moghadas is
                      currently supported by the MUSIS project funded by Deutsche
                      Forschungsgemeinschaft (DFG, Germany).},
      abstract     = {The quantitative retrieval of soil apparent electrical
                      conductivity using electromagnetic induction (EMI) has
                      remained limited due to strong simplifications regarding EMI
                      antenna modelling. In this paper, a new technique for EMI
                      antenna modelling is applied for the common-offset EMI
                      systems. The EMI system is efficiently described using
                      global transmission and reflection coefficients and Green's
                      functions are used to describe wave diffusion for horizontal
                      and vertical dipole modes. We performed EMI measurements
                      along a 180-metre-long transect with two different
                      instrument heights above the soil surface, as well as with
                      different orientations and frequencies. To ensure proper
                      retrieval of the soil apparent electrical conductivity, the
                      reference values were obtained from electrical conductivity
                      data measured from 11 undisturbed soil cores taken along the
                      EMI transect. The apparent electrical conductivity values
                      calculated by applying the proposed model have a good
                      agreement with reference values, however some discrepancies
                      can be observed that are mainly attributed to the presence
                      of local heterogeneities and also errors due to the
                      variations in the height of the EMI instruments above the
                      ground. The proposed method appears to be promising for
                      quantitative retrieval of soil apparent electrical
                      conductivity and resolving calibration issues that are
                      typically encountered using EMI. In addition, the model
                      calibration (antenna transfer functions determination) was
                      successfully accomplished using conductivity values measured
                      from the soil cores.},
      keywords     = {J (WoSType)},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Geochemistry $\&$ Geophysics},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000305376700005},
      doi          = {10.3997/1873-0604.2012002},
      url          = {https://juser.fz-juelich.de/record/22332},
}