干旱区生态环境知识资源中心(Arid): Effects of Downward Intrusion of Saline Water on Nested Groundwater Flow Systems

Arid

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
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).