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@INPROCEEDINGS{Merz:172214,
author = {Merz, Steffen and Pohlmeier, Andreas and Vanderborght, Jan
and van Dusschoten, Dagmar and Vereecken, Harry},
title = {{T}ransition of {S}tage {I} to {S}tage {II} evaporation
regime in the topmost soil: {H}igh-resolution {NMR} imaging,
profiling and numerical simulation},
journal = {Microporous and mesoporous materials},
volume = {205},
issn = {1387-1811},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2014-05703},
pages = {3-6},
year = {2015},
abstract = {Bare soils are natural porous media where moisture and
transport properties may change considerably. Under very dry
conditions, it is predicted that capillary continuity from
deeper soil layers to the surface ceases and evaporation
decreases drastically because it is only sustained by vapor
transport through an increasing dry surface layer (stage
II). In this study, we firstly confirm this effect by
investigating the drying of a lab-scale sand column using
various MRI sequences as well as a unilateral NMR sensor
(NMR-MOUSE). Proofing the convenience of the unilateral
sensor, we take a step forward by monitoring moisture
development of a natural soil under controlled ambient
conditions. Finally, the experimental results clearly
validate the prediction of a coupled water, vapor and heat
flow model regarding the onset of stage II evaporation and
the subsequent receding secondary evaporation front.},
month = {Feb},
date = {2014-02-09},
organization = {12th International Bologna Conference
on Magnetic Resonance in Porous Media
(MRPM12), Wellington (New Zealand), 9
Feb 2014 - 13 Feb 2014},
cin = {IBG-3},
ddc = {530},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255) / 255 - Terrestrial Systems: From Observation to
Prediction (POF3-255) / DFG project 15232683 - TRR 32:
Muster und Strukturen in
Boden-Pflanzen-Atmosphären-Systemen: Erfassung,
Modellierung und Datenassimilation (15232683)},
pid = {G:(DE-HGF)POF3-255 / G:(DE-HGF)POF3-255 /
G:(GEPRIS)15232683},
typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)16},
UT = {WOS:000350190500002},
doi = {10.1016/j.micromeso.2014.10.035},
url = {https://juser.fz-juelich.de/record/172214},
}