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@ARTICLE{Garre:10168,
      author       = {Garre, S. and Köstel, J. and Günther, T. and Javaux, M.
                      and Vanderborght, J. and Vereecken, H.},
      title        = {{C}omparison of heterogeneous transport processes observed
                      with electrical resistivity tomography in two soils},
      journal      = {Vadose zone journal},
      volume       = {9},
      issn         = {1539-1663},
      address      = {Madison, Wis.},
      publisher    = {SSSA},
      reportid     = {PreJuSER-10168},
      pages        = {336 - 349},
      year         = {2010},
      note         = {We would like to thank Dr. Thomas Putz and Werner
                      Mittelstaedt for the excavation of the lysimeters at both
                      field sites, as well as Ansgar Weuthen, Normen Hermes,
                      Ferdinand Engels, and Jurgen Holtkemeier for the technical
                      design and support. We thank our colleague Michel Bechtold
                      for fruitful discussions and help during the experiments. Th
                      is project was financed by the Helmholtz virtual institute
                      'Inverse Modelling of Terrestrial Systems' INVEST.},
      abstract     = {Preferential flow in soils can manifest itself in several
                      ways. To illustrate this, we analyzed solute transport
                      during a step tracer experiment in two soils expected to
                      differ in their governing transport processes: a loamy sand
                      and a silty soil. By combining electrical resistivity
                      tomography (ERT), time domain reflectometry, and effluent
                      measurements, we observed different preferential flow
                      phenomena. The transport process was characterized using
                      voxel- and column-scale effective convective-dispersive
                      equation (CDE) parameters, local velocities, and leaching
                      surfaces. At the column scale, transport in the loamy sand
                      was dominated by a homogenous convective-dispersive
                      transport behavior, but at the scale of the voxel,
                      preferential transport was observed. Transport in the silty
                      soil was considerably more heterogeneous. Preferential flow
                      was identified using ERT, voxel- and column-scale effective
                      CDE parameters, local velocities, and leaching surfaces. In
                      these soils, a clear influence of soil layering on solute
                      transport was observed.},
      keywords     = {J (WoSType)},
      cin          = {ICG-4 / JARA-ENERGY},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793 / $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Environmental Sciences / Soil Science / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000277718000014},
      doi          = {10.2136/vzj2009.0086},
      url          = {https://juser.fz-juelich.de/record/10168},
}