A Simple Thaw-Freeze Algorithm for a Multi-Layered Soil using the Stefan Equation (SCI)
文献类型：期刊论文
| 作者 | Xie C. W. ; Gough W. A. |
| 刊名 | Permafrost and Periglacial Processes
 |
| 出版日期 | 2013 |
| 卷号 | 24期号:3页码:252-260 |
| ISSN号 | ISBN/1045-6740 |
| 英文摘要 | The Stefan equation is one of the simplest approximate analytical solutions for the thaw-freeze problem. It provides a useful method for predicting the depth of thawing/freezing in soils when little site-specific information is available. The limited number of parameters in the Stefan equation makes possible its application in a multi-layered system. We demonstrate that a widely used algorithm (JL-algorithm), which has been frequently used in permafrost regions, was derived by an incorrect mathematical method. It will inevitably result in systematic errors in the simulation if this algorithm is used in a multi-layered soil. We present another simple thaw-freeze algorithm (XG-algorithm) for multi-layered soils. The new algorithm can be used to determine the freeze/thaw front in multi-layered soils no matter how thick each layer is and how many layers the soil profile contains. Simulation results of the JL-algorithm and the XG-algorithm are compared using hypothetical soil profiles, and the XG-algorithm is also used to simulate the thaw depth at three permafrost monitoring sites on the Qinghai-Tibet Plateau and one on the Loess Plateau, China. These applications show that the XG-algorithm could be readily used to analyse the factors that affect active-layer thickness. It can also be coupled with hydrological or land surface models to simulate the freeze-thaw cycles in permafrost regions and for related engineering applications. Copyright (c) 2013 John Wiley & Sons, Ltd. |
| 收录类别 | (SCI) |
| 公开日期 | 2014-12-19 |
| 源URL | [http://ir.casnw.net/handle/362004/23234]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xie C. W.,Gough W. A.. A Simple Thaw-Freeze Algorithm for a Multi-Layered Soil using the Stefan Equation (SCI)[J]. Permafrost and Periglacial Processes,2013,24(3):252-260. |
| APA | Xie C. W.,&Gough W. A..(2013).A Simple Thaw-Freeze Algorithm for a Multi-Layered Soil using the Stefan Equation (SCI).Permafrost and Periglacial Processes,24(3),252-260. |
| MLA | Xie C. W.,et al."A Simple Thaw-Freeze Algorithm for a Multi-Layered Soil using the Stefan Equation (SCI)".Permafrost and Periglacial Processes 24.3(2013):252-260. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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