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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},
}