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| DOI | 10.1016/j.jhydrol.2024.130802 |
| Miscellaneous methods for determination of unfrozen water content in frozen soils | |
| 发表日期 | 2024 |
| ISSN | 0022-1694 |
| EISSN | 1879-2707 |
| 起始页码 | 631 |
| 卷号 | 631 |
| 英文摘要 | Frozen soil is a complex four-phase porous medium consisting of soil solid/rock, air, unfrozen/liquid water and ice at the subzero temperatures. Freeze-thaw cycles change the magnitude of total soil water content as well as the unfrozen water/ice ratio in frozen soil that affects soil structure and strength, infiltrability/permeability, water availability for microbial activity and chemical reactions, solute concentration and distribution, and thermodynamics. Accurate quantification of unfrozen water content is therefore critical to understand frozen soil hydrological, biogeochemical, thermal and mechanical properties and processes under climate change. Currently a variety of techniques and methods have been applied to obtain unfrozen water content in frozen soils. However, only few studies have attempted to review and synthesize these works. The objective of this study was therefore to review and collate currently available methods determining unfrozen water content in frozen soils. The principles, applications, advantages and limitations of these methods were reviewed and categorized into five categories: a pressure-based method, radioactive-methods, electromagnetic-methods, thermal-methods, and a sound-based method. Models for indirectly estimating unfrozen water content based on empirical temperature relationships, the soil water/moisture retention characteristic, and the vG-Clapeyron model, were also summarized. There is no direct method to estimate ice content but it can be indirectly calculated based on water balance (i.e., difference between total and unfrozen soil water content). The review is closed with a brief review of future needs and perspectives for simultaneous measurement of unfrozen water and ice contents in the laboratory and in the field. |
| 英文关键词 | Unfrozen water content; Ice content; Soil freezing characteristic; Dielectric permittivity |
| 语种 | 英语 |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
| WOS记录号 | WOS:001177283100001 |
| 来源期刊 | JOURNAL OF HYDROLOGY
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301637 |
| 作者单位 | Northwest A&F University - China; Utah System of Higher Education; Utah State University; United States Department of Agriculture (USDA); University of Alberta; University of Queensland; University of Zagreb; University of Saskatchewan; Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | . Miscellaneous methods for determination of unfrozen water content in frozen soils[J],2024,631. |
| APA | (2024).Miscellaneous methods for determination of unfrozen water content in frozen soils.JOURNAL OF HYDROLOGY,631. |
| MLA | "Miscellaneous methods for determination of unfrozen water content in frozen soils".JOURNAL OF HYDROLOGY 631(2024). |
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