干旱区生态环境知识资源中心(Arid): The effect of brine pumping on the natural hydrodynamics of the Salar de Atacama: The damping capacity of salt flats

Arid

DOI	10.1016/j.scitotenv.2018.11.196
	The effect of brine pumping on the natural hydrodynamics of the Salar de Atacama: The damping capacity of salt flats
	Marazuela, M. A.1,2,3; Vazquez-Sune, E.1; Ayora, C.1; Garcia-Gil, A.4; Palma, T.1
通讯作者	Marazuela, M. A.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	654 页码:1118-1131
英文摘要	The Salar de Atacama is used as a case study to analyse and quantify coupled natural (evaporation and recharge) and anthropogenic processes (pumping of lithium-rich brine) to abstract their patterns to other salt flats using a three-dimensional groundwater flow model. Important changes in the dynamics of the water table between the pre-operational period (1986-1994) and operational period (1994-2015) are observed. The water table exhibited a gradual drawdown during the pre-operational period because the evaporation was greater than the recharge for most of these periods. This negative balance was counteracted by some sharp rises that were produced by direct rainfall events on the salt flat. The deep lateral recharge that arrived from the mountains did not produce abrupt changes in the water table because the rainfall events in the mountains were damped by the distance of the recharge zone and great thickness of the unsaturated zone. The natural evolution of the water table was modified by the intensive brine pumping that was performed in the south-western Salar de Atacama during the operational period. As evaporation depends on the water table depth, the pumping caused a drawdown of the water table, resulting in an evaporation rate reduction that partially compensated for the pumped brine in the water balance of the basin. This effect is defined as the damping capacity of salt flats. Thus, salt flats have a high capacity for dampening oscillations in their water table in response to both natural and anthropogenic disturbances which is of great importance for the management of lake and wetland ecosystems and brine exploitation. The limit of the dampening capacity of salt flats is defined by the evaporation extinction depth, which is in the range of 0.5-2 m. (C) 2018 Elsevier B.V. All rights reserved.
英文关键词	Groundwater management Numerical modelling Evaporation Brine Pumping Lithium
类型	Article
语种	英语
国家	Spain
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000458630100104
WOS关键词	REGIONAL GROUNDWATER-FLOW ; DE-ATACAMA ; NORTHERN CHILE ; BASIN ; EVOLUTION ; DESERT ; EVAPORATION ; AQUIFER ; ORIGIN ; SYSTEM
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218638
作者单位	1.CSIC, Inst Environm Assessment & Water Res IDAEA, Jordi Girona 18-26, ES-08034 Barcelona, Spain; 2.Tech Univ Catalonia UPC, Dept Civil & Environm Engn, Jordi Girona 1-3, Barcelona 08034, Spain; 3.UPC, CSIC, Hydrogeol Grp, Associated Unit, Barcelona, Spain; 4.Geol & Min Inst Spain IGME, Manuel Lasala 44,9 B, Zaragoza 50006, Spain
推荐引用方式 GB/T 7714	Marazuela, M. A.,Vazquez-Sune, E.,Ayora, C.,et al. The effect of brine pumping on the natural hydrodynamics of the Salar de Atacama: The damping capacity of salt flats[J],2019,654:1118-1131.
APA	Marazuela, M. A.,Vazquez-Sune, E.,Ayora, C.,Garcia-Gil, A.,&Palma, T..(2019).The effect of brine pumping on the natural hydrodynamics of the Salar de Atacama: The damping capacity of salt flats.SCIENCE OF THE TOTAL ENVIRONMENT,654,1118-1131.
MLA	Marazuela, M. A.,et al."The effect of brine pumping on the natural hydrodynamics of the Salar de Atacama: The damping capacity of salt flats".SCIENCE OF THE TOTAL ENVIRONMENT 654(2019):1118-1131.