干旱区生态环境知识资源中心(Arid): Groundwater resources and recharge processes in the Western Andean Front of Central Chile

Arid

DOI	10.1016/j.scitotenv.2020.137824
	Groundwater resources and recharge processes in the Western Andean Front of Central Chile
	Taucare, Matias 1,2; Daniele, Linda 1,2; Viguier, Benoit 1,2; Vallejos, Angela 3; Arancibia, Gloria 2,4
通讯作者	Daniele, Linda
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	722
英文摘要	In Central Chile, the increment of withdrawals together with drought conditions has exposed the poor understanding of the regional hydrogeological system. In this study, we addressed theWestern Andean Front hydrogeology by hydrogeochemical and water stable isotope analyses of 23 springs, 10 boreholes, 5 rain-collectors and 5 leaching-rocks samples at Aconcagua Basin. From the upstream to the downstream parts of the Western Andean Front, most groundwater is HCO3-Ca and results from the dissolution of anorthite, labradorite and other silicate minerals. The Hierarchical Cluster Analysis groups the samples according to its position along the Western Andean Front and supports a clear correlation between the increasing groundwater mineralization (31-1188 mu S/cm) and residence time. Through Factorial Analysis, we point that Cl, NO3, Sr and Ba concentrations are related to agriculture practices in the Central Depression. After defining the regional meteoric water line at 33 degrees S in Chile, water isotopes demonstrate the role of rain and snowmelt above similar to 2000 m asl in the recharge of groundwater. Finally, we propose an original conceptual model applicable to the entire Central Chile. During dry periods, water releases fromhigh-elevation areas infiltrate in mid-mountain gullies feeding groundwater circulation in the fractured rocks of Western Andean Front. To the downstream, mountain-block and -front processes recharge the alluvial aquifers. Irrigation canals, conducting water from Principal Cordillera, play a significant role in the recharge of Central Depression aquifers. While groundwater in the Western Andean Front has a high-quality according to different water uses, intensive agriculture practices in the Central Depression cause an increment of hazardous elements for human-health in groundwater. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Groundwater Fractured aquifer Mountain front zone Hydrogeochemistry Water stable isotopes Aconcagua Basin
类型	Article
语种	英语
国家	Chile ; Spain
收录类别	SCI-E
WOS记录号	WOS:000535470700006
WOS关键词	ACONCAGUA RIVER-BASIN ; ATACAMA DESERT ; NORTHERN CHILE ; STATISTICAL-ANALYSIS ; TRACE-ELEMENTS ; ROCK GLACIERS ; WATER ; PRECIPITATION ; AQUIFER ; CORDILLERA
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/2XILL650/319345
作者单位	1.Univ Chile, Fac Ciencias Fis & Matemat, Dept Geol, Santiago, Chile; 2.Univ Chile, Fac Ciencias Fis & Matemat, Ctr Excelencia Geotermia los Andes CEGA, Santiago, Chile; 3.Univ Almeria, Recursos Hidr & Geol Ambiental, Almeria, Spain; 4.Pontificia Univ Catolica Chile, Dept Ingn Estruct & Geotecn, Santiago, Chile
推荐引用方式 GB/T 7714	Taucare, Matias,Daniele, Linda,Viguier, Benoit,et al. Groundwater resources and recharge processes in the Western Andean Front of Central Chile[J],2020,722.
APA	Taucare, Matias,Daniele, Linda,Viguier, Benoit,Vallejos, Angela,&Arancibia, Gloria.(2020).Groundwater resources and recharge processes in the Western Andean Front of Central Chile.SCIENCE OF THE TOTAL ENVIRONMENT,722.
MLA	Taucare, Matias,et al."Groundwater resources and recharge processes in the Western Andean Front of Central Chile".SCIENCE OF THE TOTAL ENVIRONMENT 722(2020).