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@ARTICLE{Pohlmeier:3486,
      author       = {Pohlmeier, A. and van Dusschoten, D. and Weihermüller, L.
                      and Schurr, U. and Vereecken, H.},
      title        = {{I}maging water fluxes in porous media by magnetic
                      resonance imaging using {D}2{O} as a tracer},
      journal      = {Magnetic resonance imaging},
      volume       = {27},
      issn         = {0730-725X},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-3486},
      pages        = {285 - 292},
      year         = {2009},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {In this study, we investigate the usefulness of D(2)O as a
                      conservative tracer for monitoring water flux by MRI in a
                      heterogeneous sand column. The column consisted of a
                      cylindrical 3x9-cm packing of fine sand in which an 8-mm
                      diameter cylindrical obstacle was placed. Constant
                      steady-state flux densities between J(w)=0.07 and 0.28 cm
                      min(-1) corresponding to mean pore flow velocities between
                      0.20 and 0.79 cm min(-1) were imposed at the top of the sand
                      column, and a constant hydraulic head of -39 cm was
                      maintained at the lower boundary. We injected pulses of 0.01
                      M NiCl(2) and $55\%$ D(2)O and monitored the motion of the
                      tracer plumes by MRI using a fast spin echo sequence over a
                      period of 20 min. We observed that the center of gravity of
                      all plumes moved with the mean pore flow velocity, which
                      showed that D(2)O behaves as a conservative tracer. The
                      motion of the tracer plume at J(w)=0.14 cm min(-1) was
                      validated by a numerical simulation using HYDRUS2D, which
                      reproduced the experimentally observed behavior very
                      satisfactorily.},
      keywords     = {J (WoSType)},
      cin          = {ICG-3 / ICG-4 / JARA-ENERGY},
      ddc          = {610},
      cid          = {I:(DE-Juel1)ICG-3-20090406 / I:(DE-Juel1)VDB793 /
                      $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Radiology, Nuclear Medicine $\&$ Medical Imaging},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:18701229},
      UT           = {WOS:000263533300015},
      doi          = {10.1016/j.mri.2008.06.007},
      url          = {https://juser.fz-juelich.de/record/3486},
}