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@ARTICLE{Sauer:134443,
      author       = {Sauer, D. and Popp, S. and Dittfurth, A. and Altdorff,
                      Daniel and Dietrich, P. and Paasche, H.},
      title        = {{S}oil {M}oisture {A}ssessment over an {A}lpine {H}illslope
                      with {S}ignificant {S}oil {H}eterogeneity},
      journal      = {Vadose zone journal},
      volume       = {12},
      number       = {4},
      issn         = {1539-1663},
      address      = {Madison, Wis.},
      publisher    = {SSSA},
      reportid     = {FZJ-2013-02642},
      pages        = {},
      year         = {2013},
      abstract     = {We strive to assess soil water content on a well-studied
                      slow-moving hillslope in Austria. In doing so, we employ
                      time lapse mapping of bulk electrical conductivity using a
                      geophysical electromagnetic induction system operated at low
                      induction numbers. This information is complemented by the
                      acquisition of soil samples for gravimetric water content
                      analysis during one survey campaign. Simple visual soil
                      sample analysis reveals that the upper material in the
                      survey area is a spatially highly variable mixture of
                      predominately sandy, silty, clayey and organic materials.
                      Due to this heterogeneity, classical approaches of mapping
                      soil moisture on the basis of stationary mapping of
                      electrical conductivity variations are not successful. Also
                      the time-lapse approach does not allow ruling out some of
                      the ambiguity inherent to the linkage of bulk electrical
                      conductivity to soil water content. However, indication is
                      found that time-lapse measurements may have supportive
                      capabilities to identify regions of low precipitation
                      infiltration due to high soil saturation. Furthermore, the
                      relationship between the mean electrical conductivity
                      averaged over a full vegetation period and an already
                      available ecological moisture map produced by vegetation
                      analysis is found to resemble closely the relationship
                      observed between gravimetric soil water content and
                      electrical conductivity during the time of sample collection
                      except for highly organic soils. This leads us to the
                      assumption that the relative soil moisture distribution is
                      temporarily stable except for those areas characterized by
                      highly organic soils},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {211 - Global Earth Monitoring: Global Processes and Change
                      (POF2-211)},
      pid          = {G:(DE-HGF)POF2-211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000328628400022},
      doi          = {10.2136/vzj2013.01.0009},
      url          = {https://juser.fz-juelich.de/record/134443},
}