Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024665 |
Comment on "Appropriate Boundary Condition for Dupuit-Boussinesq Theory on the Steady Groundwater Flow in an Unconfined Sloping Aquifer With Uniform Recharge" by Wu et al. | |
Kong, Jun1; Sun, Jie1; Luo, Zhaoyang1; Shen, Chengji1; Hua, Guofen2; Lu, Chunhui2 | |
2019-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:4页码:3593-3596 |
文章类型 | Editorial Material |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | By neglecting unsaturated flow, Wu et al. (2018, https://doi.org/10.1029/2018WR023070) claimed that the zero volumetric discharge at the upstream boundary results in two possible boundary conditions of either zero groundwater table or zero seepage velocity based on the original Dupuit-Boussinesq theory. They further concluded that a steeper and/or shallower aquifer has a zero-groundwater table if the downstream groundwater table is shallower. Here we point out that the conceptual model adopted by Wu et al. (2018) not reasonable and the results are quite different from those with unsaturated flow considered in the real hillslope aquifer. Specifically, the water table at the upstream boundary could be positive or negative due to the lateral unsaturated flow effect, and hence, the seepage velocity must be set to zero to satisfy the zero discharge boundary condition at the upstream boundary. In addition, the zero groundwater table cannot ensure a zero discharge at the upstream boundary. Furthermore, we argue that the discharge with respect to the groundwater table is linearly distributed along the slope distance only when both saturated and unsaturated flows are considered. The saturated flow discharge itself is not distributed linearly. Our comment highlights the importance of unsaturated flow in studying steady groundwater flow in an unconfined sloping aquifer with uniform recharge using the Dupuit-Boussinesq theory. |
英文关键词 | boundary condition Dupuit-Boussinesq theory unconfined sloping aquifer |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000468597900056 |
WOS关键词 | COMPLEX HILLSLOPES |
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/182261 |
专题 | 资源环境科学 |
作者单位 | 1.Hohai Univ, Jiangsu Key Lab Coast Ocean Resources Dev & Envir, Nanjing, Jiangsu, Peoples R China; 2.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Kong, Jun,Sun, Jie,Luo, Zhaoyang,et al. Comment on "Appropriate Boundary Condition for Dupuit-Boussinesq Theory on the Steady Groundwater Flow in an Unconfined Sloping Aquifer With Uniform Recharge" by Wu et al.[J]. WATER RESOURCES RESEARCH,2019,55(4):3593-3596. |
APA | Kong, Jun,Sun, Jie,Luo, Zhaoyang,Shen, Chengji,Hua, Guofen,&Lu, Chunhui.(2019).Comment on "Appropriate Boundary Condition for Dupuit-Boussinesq Theory on the Steady Groundwater Flow in an Unconfined Sloping Aquifer With Uniform Recharge" by Wu et al..WATER RESOURCES RESEARCH,55(4),3593-3596. |
MLA | Kong, Jun,et al."Comment on "Appropriate Boundary Condition for Dupuit-Boussinesq Theory on the Steady Groundwater Flow in an Unconfined Sloping Aquifer With Uniform Recharge" by Wu et al.".WATER RESOURCES RESEARCH 55.4(2019):3593-3596. |
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