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@ARTICLE{Popp:134441,
      author       = {Popp, S. and Altdorff, Daniel and Dietrich, P.},
      title        = {{A}ssessment of shallow subsurface characterisation with
                      non-invasive geophysical methods at the intermediate
                      hill-slope scale},
      journal      = {Hydrology and earth system sciences},
      volume       = {17},
      number       = {4},
      issn         = {1607-7938},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2013-02640},
      pages        = {1297 - 1307},
      year         = {2013},
      abstract     = {Hill-slopes of several hectares in size represent a
                      difficult scale for subsurface characterisation, as these
                      landscape units are well beyond the scope of traditional
                      pointscale techniques. By means of electromagnetic induction
                      (EMI) and gamma-ray spectroscopy, spatially distributed soil
                      proxy data were collected from a heterogeneous hill-slope
                      site. Results of EMI mapping using the EM38DD showed that
                      soil electrical conductivity (ECa) is highly variable at
                      both temporal and spatial scales. Calibration of the
                      integral ECa signal to a specific target like soil moisture
                      is hampered by the ambiguous response of EMI to the
                      clay-rich hill-slope underground. Gamma-ray results were
                      obtained during a single survey, along with EMI measurements
                      and selected soil sampling. In contrast to ECa, a noticeable
                      correlation between Total Count and K emission data and
                      soil-water content seemed to be present. Relevant proxy
                      variables from both methods were used for k means clustering
                      in order to distinguish between hill-slope areas with
                      different soil conditions. As a result, we obtained a
                      suitable partition of hillslope that was comparable with a
                      previously obtained zonation model based on ecological
                      factors.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246)},
      pid          = {G:(DE-HGF)POF2-246},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000318440800003},
      doi          = {10.5194/hess-17-1297-2013},
      url          = {https://juser.fz-juelich.de/record/134441},
}