干旱区生态环境知识资源中心(Arid): Groundwater recharge and hydrodynamics of complex volcanic aquifers with a shallow saline lake: Laguna Tuyajto, Andean Cordillera of northern Chile

Arid

DOI	10.1016/j.scitotenv.2019.134116
	Groundwater recharge and hydrodynamics of complex volcanic aquifers with a shallow saline lake: Laguna Tuyajto, Andean Cordillera of northern Chile
	Urrutia, Javier 1; Herrera, Christian 1; Custodio, Emilio 2; Jodar, Jorge 3; Medina, Agustin 4
通讯作者	Urrutia, Javier
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	697
英文摘要	Estimating groundwater recharge in arid regions with seasonal snow cover, as in the Andean Altiplano of northern Chile, is important for sustainable development policies and the effective management of scarce resources in a high water demanding zone, as fragile ecosystems depends on a stable water contribution. This research aims to evaluate and quantify rainfall and snowfall contribution to aquifer recharge while assessing the factors that control the hydrodynamics in such areas, based in the knowledge of the better documented Tuyajto Lake in the Tuyajto catchment/basin. The modeling framework involves an energy balance of the snow cover, a soil water balance and a groundwater flow and chloride transport model. The basin average annual recharge is about 23% of average precipitation. Snowmelt contribution to recharge is important at altitudes above 4700 m a.s.l. during September, while rainfall is more important in February and March, during short intense precipitation events. The hydraulic conductivity of ignimbrites and other volcanic formations are the most important hydrogeological parameters controlling lake level and spring flow rates, while albedo and snowpack surface roughness length on the energy balance causes the greatest variation of lake level. Evaporation is the process controlling the variability of the lake level, as aquifer contribution remains relatively constant and springs flow variability is not enough to cause the observed variations, except during November. Possible buried salts deposits on the eastern edges of Pampa Colorada and Tuyajto Lake, together with volcanic HCl contribution, justify the high measured groundwater chloride concentrations. A recharge 2-3 higher than the current one is necessary to justify a lake level 40 m above its modern value during the Last Glacial period, giving insight into past hydrological changes in the basin due to climate variability. The knowledge gained can be applied to other high altitude volcanic basins with seasonal snow cover. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Arid zones Water balance Snowmelt Paleoclimate Modeling Volcanic basins
类型	Article
语种	英语
国家	Chile ; Spain
收录类别	SCI-E
WOS记录号	WOS:000499668600116
WOS关键词	ATACAMA DESERT ; CLIMATE-CHANGE ; COASTAL AQUIFER ; VARIABILITY ; ORIGIN ; PRECIPITATION ; ALTIPLANO ; RIVER ; FLOW ; CONSTRAINTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-12-20
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311869
作者单位	1.Univ Catolica Norte, Dept Ciencias Geol, Antofagasta, Chile; 2.Tech Univ Catalonia, Royal Acad Sci, Grp Groundwater Hydrol, Dept Civil & Environm Engn, Barcelona, Spain; 3.Unit Zaragoza, Geol & Min Inst Spain, Zaragoza, Spain; 4.Tech Univ Catalonia, Dept Civil & Environm Engn, Barcelona, Spain
推荐引用方式 GB/T 7714	Urrutia, Javier,Herrera, Christian,Custodio, Emilio,et al. Groundwater recharge and hydrodynamics of complex volcanic aquifers with a shallow saline lake: Laguna Tuyajto, Andean Cordillera of northern Chile[J],2019,697.
APA	Urrutia, Javier,Herrera, Christian,Custodio, Emilio,Jodar, Jorge,&Medina, Agustin.(2019).Groundwater recharge and hydrodynamics of complex volcanic aquifers with a shallow saline lake: Laguna Tuyajto, Andean Cordillera of northern Chile.SCIENCE OF THE TOTAL ENVIRONMENT,697.
MLA	Urrutia, Javier,et al."Groundwater recharge and hydrodynamics of complex volcanic aquifers with a shallow saline lake: Laguna Tuyajto, Andean Cordillera of northern Chile".SCIENCE OF THE TOTAL ENVIRONMENT 697(2019).