An Approximate Model for Predicting the Specific Yield Under Periodic Water Table Oscillations
文献类型：期刊论文
| 作者 | Pozdniakov, Sergey P.2; Wang, Ping1 ; Lekhov, Vladimir A.2
|
| 刊名 | WATER RESOURCES RESEARCH
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 55期号:7页码:6185-6197 |
| ISSN号 | 0043-1397 |
| DOI | 10.1029/2019WR025053 |
| 通讯作者 | Wang, Ping(wangping@igsnrr.ac.cn) |
| 英文摘要 | Predicting specific yield for a given aquifer remains a great challenge due to its dynamic characteristics, especially under periodic (e.g., seasonal and diurnal) groundwater level fluctuations. In this study, a dimensionless period of groundwater level fluctuations, which depends on the saturated hydraulic conductivity, the length of the groundwater level fluctuation period, and the soil water retention properties, is first introduced. Then, the relationship between the predicted specific yield and the dimensionless period of groundwater level fluctuations is defined based on the theory of variably saturated flow. The proposed approximate formula is tested by series of simulations of variably saturated flow within homogeneous and isotropic porous media with the Hydrus-1D program. The results of numerical experiments demonstrate an invariant relationship between the predicted specific yield and the dimensionless period for a wide range of changes in the dimensionless period of groundwater level oscillations. Furthermore, the sensitivity analysis of the dependence of the predicted specific yield on the van Genuchten parameters indicates the applicability of estimating the specific yield via van Genuchten parameters, which can be predicted by the soil texture classes for a given length of the oscillation period and a known saturated hydraulic conductivity in the zone of groundwater level fluctuations. The proposed model can be used for predicting the dynamics of the specific yield under seasonal or diurnal groundwater level fluctuations. |
| WOS关键词 | HYDRAULIC CONDUCTIVITY ; EVAPOTRANSPIRATION ; EXPRESSIONS ; FLOW |
| 资助项目 | Russian Science Foundation[16-17-10187] ; National Natural Science Foundation of China[41671023] ; NSFC-RFBR Programme 2018-2019[41811530084] ; NSFC-RFBR Programme 2018-2019[18-55-53025GammaPhiEH_a] ; Special Exchange Program of the Chinese Academy of Sciences 2019-2020 |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000481444700057 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Russian Science Foundation ; National Natural Science Foundation of China ; NSFC-RFBR Programme 2018-2019 ; Special Exchange Program of the Chinese Academy of Sciences 2019-2020 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68883]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Lomonosov Moscow State Univ, Dept Hydrogeol, Moscow, Russia |
| 推荐引用方式 GB/T 7714 | Pozdniakov, Sergey P.,Wang, Ping,Lekhov, Vladimir A.. An Approximate Model for Predicting the Specific Yield Under Periodic Water Table Oscillations[J]. WATER RESOURCES RESEARCH,2019,55(7):6185-6197. |
| APA | Pozdniakov, Sergey P.,Wang, Ping,&Lekhov, Vladimir A..(2019).An Approximate Model for Predicting the Specific Yield Under Periodic Water Table Oscillations.WATER RESOURCES RESEARCH,55(7),6185-6197. |
| MLA | Pozdniakov, Sergey P.,et al."An Approximate Model for Predicting the Specific Yield Under Periodic Water Table Oscillations".WATER RESOURCES RESEARCH 55.7(2019):6185-6197. |
入库方式： OAI收割
来源：地理科学与资源研究所
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