Moisture profiles of the uppper soil layer during evaporation monitored by NMR
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| Title: | Main Title: Moisture profiles of the uppper soil layer during evaporation monitored by NMR |
| Description: | 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: | 10.1002/2013WR014809 (DOI) |
Responsible Party
| Creators: | Steffen Merz (Author), Andreas Pohlmeier (Author), Jan Vanderborght (Author), Dagmar van Dusschoten (Author), Harry Vereecken (Author) |
| Publisher: | AGU Publications |
| Publication Year: | 2014 |
Topic
| TR32 Topic: | Soil |
| Related Subproject: | A1 |
| Subject: | Keyword: Soil Moisture |
File Details
| Filename: | Merz_et_al_2014.pdf |
| Data Type: | Text - Article |
| File Size: | 972 KB |
| Date: | Submitted: 27.06.2014 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
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| Download Permission: | Only Project Members |
| 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 |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Electronic |
| Source: | Water Resources Research |
| Source Website: | http://onlinelibrary.wiley.com/doi/10.1002/2013WR014809/abstract |
| Issue: | 6 |
| Volume: | 50 |
| Number of Pages: | 12 (5184 - 5195) |
Metadata Details
| Metadata Creator: | Anastasia Bauer |
| Metadata Created: | 20.08.2014 |
| Metadata Last Updated: | 20.08.2014 |
| Subproject: | A1 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 906 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 1 |
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