Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR026020 |
In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements | |
Lara, R. Pardo1; Berg, A. A.1; Warland, J.2; Tetlock, Erica3 | |
2020-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | We present a method to characterize soil moisture freeze-thaw events and freezing/melting point depression using permittivity and temperature measurements, readily available from in situ sources. In cold regions soil freeze-thaw processes play a critical role in the surface energy and water balance, with implications ranging from agricultural yields to natural disasters. Although monitoring of the soil moisture phase state is of critical importance, there is an inability to interpret soil moisture instrumentation in frozen conditions. To address this gap, we investigated the freeze-thaw response of a widely used soil moisture probe, the HydraProbe, in the laboratory. Soil freezing curves (SFCs) and soil thawing curves (STCs) were identified using the relationship between soil permittivity and temperature. The permittivity SFC/STC was fit using a logistic growth model to estimate the freezing/melting point depression (T-f/m) and its spread (s). Laboratory results showed that the fitting routine requires permittivity changes greater than 3.8 to provide robust estimates and suggested that a temperature bias is inherent in horizontally placed HydraProbes. We tested the method using field measurements collected over the last 7 years from the Environment and Climate Change Canada and the University of Guelph's Kenaston Soil Moisture Network in Saskatchewan, Canada. By dividing the time series into freeze-thaw events and then into individual transitions, the permittivity SFC/STC was identified. The freezing and melting point depression for the network was estimated as T-f/m = - 0.35 +/- 0.2,with T-f = - 0.41 +/- 0.22 degrees C and T-m = - 0.29 +/- 0.16 degrees C, respectively. |
英文关键词 | soil moisture freeze thaw freezing point depression soil freezing curve seasonally frozen ground cryosphere |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000537736400014 |
WOS关键词 | UNFROZEN WATER-CONTENT ; FREEZE-THAW CYCLE ; FROZEN SOIL ; THERMAL-PROPERTIES ; VALIDATION ; DYNAMICS ; PARAMETERIZATION ; CALIBRATION ; CLIMATE ; MODELS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280672 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Guelph, Dept Geog Environm & Geomat, Guelph, ON, Canada; 2.Univ Guelph, Sch Environm Sci, Guelph, ON, Canada; 3.Environm & Climate Change Canada, Natl Hydrol Res Ctr, Saskatoon, SK, Canada |
推荐引用方式 GB/T 7714 | Lara, R. Pardo,Berg, A. A.,Warland, J.,et al. In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements[J]. WATER RESOURCES RESEARCH,2020,56(5). |
APA | Lara, R. Pardo,Berg, A. A.,Warland, J.,&Tetlock, Erica.(2020).In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements.WATER RESOURCES RESEARCH,56(5). |
MLA | Lara, R. Pardo,et al."In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements".WATER RESOURCES RESEARCH 56.5(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论