Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2020WR028377 |
Effects of Downward Intrusion of Saline Water on Nested Groundwater Flow Systems | |
Zhang, Xiaolang; Jiao, Jiu Jimmy; Li, Hailong; Luo, Xin; Kuang, Xingxing | |
通讯作者 | Jiao, JJ |
来源期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:10 |
英文摘要 | Nested groundwater flow systems (NGFS) are commonplace in various hydrogeological environments, including endorheic basins and coastal aquifers. The subsystems of the NGFS can be spatially separated by streamlines around the internal stagnation points. At the discharge zones of the topographic depressions, saline water often emerges due to high evaporation in endorheic drainage basins or the combined effects of evaporation and intermittent seawater submersion in coastal areas. To date, there are limited studies that have considered the impact of local-scale downward migration of saline plumes in the topographic depressions on the NGFS. In this study, the classic NGFS are revisited by considering saline water in their discharge zones. To quantify the effects of salinity in the discharge zones on the NGFS, scenarios of various salinities in the discharge zones are simulated. The displacements of the internal stagnation points are used to quantify the evolution of the NGFS in response to salinity changes in the discharge zones. The results show that, as the salinity in the discharge zones increases, the hydraulic gradient near the discharge zone can be significantly reduced, the internal stagnation points shift upward, and the local groundwater flow systems retreat upward so that their original spaces are replaced by intermediate or regional flow systems. The discharge zone is expanded, and the overall groundwater flow velocity magnitude of the entire system decreases with salinity. This study may shed light on the management of saline wetlands, for example, the control of groundwater salinization, evolution of saline groundwater basins, and seawater intrusion. |
英文关键词 | groundwater flow systems density‐ dependent flow saline water downward intrusion |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:000586456800026 |
WOS关键词 | BADAIN JARAN DESERT ; STRATABOUND ORE-DEPOSITS ; THEORETICAL-ANALYSIS ; SOLUTE TRANSPORT ; POROUS-MEDIA ; SALT LAKE ; GENESIS ; BASINS ; EVAPORATION ; CONVECTION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/327354 |
作者单位 | [Zhang, Xiaolang; Jiao, Jiu Jimmy; Luo, Xin] Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China; [Zhang, Xiaolang; Li, Hailong; Kuang, Xingxing] Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China; [Li, Hailong; Kuang, Xingxing] Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Xiaolang,Jiao, Jiu Jimmy,Li, Hailong,et al. Effects of Downward Intrusion of Saline Water on Nested Groundwater Flow Systems[J],2020,56(10). |
APA | Zhang, Xiaolang,Jiao, Jiu Jimmy,Li, Hailong,Luo, Xin,&Kuang, Xingxing.(2020).Effects of Downward Intrusion of Saline Water on Nested Groundwater Flow Systems.WATER RESOURCES RESEARCH,56(10). |
MLA | Zhang, Xiaolang,et al."Effects of Downward Intrusion of Saline Water on Nested Groundwater Flow Systems".WATER RESOURCES RESEARCH 56.10(2020). |
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