[1011] - Moisture profiles of the uppper soil layer during evaporation monitored by NMR

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Merz, S., Pohlmeier, A., Vanderborght, J., van Dusschoten, D., Vereecken, H., 2014. Moisture profiles of the uppper soil layer during evaporation monitored by NMR. Water Resources Research, 50 (6), 5184 - 5195. DOI: 10.1002/2013WR014809.
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Title(s):Main Title: Moisture profiles of the uppper soil layer during evaporation monitored by NMR
Description(s):Abstract: Near-surface soil moisture profiles contain important information about the evaporation process from a bare soil. In this study, we demonstrated that such profiles could be monitored noninvasively and with high spatial resolution using Nuclear Magnetic Resonance (NMR). Soil moisture profiles were measured in a column exposed to evaporation for a period of 67 days using a stationary Magnetic Resonance Imaging (MRI) high field scanner and a unilateral NMR sensor. The column was packed with medium sand and initially saturated. Two distinct shapes of soil moisture profiles that are characteristic for stage I (evaporation rate is controlled by atmospheric demand) and stage II (evaporation rate is controlled by the porous medium) of the evaporation process were followed by both MRI and unilateral NMR. During stage I, an approximately uniform decrease of soil moisture over time was monitored, whereas during stage II, S-shaped moisture profiles developed which receded progressively into the soil column. These promising results and the specific design of the unilateral NMR system make it very well suited for determining soil moisture profiles in the field.
Identifier(s):DOI: 10.1002/2013WR014809
Responsible Party
Creator(s):Author: Steffen Merz
Author: Andreas Pohlmeier
Author: Jan Vanderborght
Author: Dagmar van Dusschoten
Author: Harry Vereecken
Publisher:AGU Publications
TR32 Topic:Soil
Subject(s):CRC/TR32 Keywords: Soil Moisture
File Details
File Name:Merz_et_al_2014.pdf
Data Type:Text
File Size:972 kB (0.949 MB)
Date(s):Date Submitted: 2014-06-27
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Ellebach
Measurement Location:Jülich (research centre)
Specific Informations - Publication
Article Type:Electronic
Source:Water Resources Research
Number Of Pages:11
Page Range:5184 - 5195
Metadata Details
Metadata Creator:Anastasia Bauer
Metadata Created:2014-08-20
Metadata Last Updated:2014-08-20
Funding Phase:2
Metadata Language:English
Metadata Version:V40
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