Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scitotenv.2017.12.134 |
Groundwater origin and recharge in the hyperarid Cordillera de la Costa, Atacama Desert, northern Chile | |
Herrera, Christian1,2; Gamboa, Carolina1,2; Custodio, Emilio3; Jordan, Teresa4,5; Godfrey, Linda6; Jodar, Jorge7,8; Luque, Jose A.1,2; Vargas, Jimmy9; Saez, Alberto10 | |
通讯作者 | Herrera, Christian |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
ISSN | 0048-9697 |
EISSN | 1879-1026 |
出版年 | 2018 |
卷号 | 624页码:114-132 |
英文摘要 | The Cordillera de la Costa is located along the coastline of northern Chile, in the hyperarid Atacama Desert area. Chemical and isotopic analyses of several small coastal springs and groundwater reservoirs between 22.5 and 25.5 allow understanding groundwater origin, renewal time and the probable timing of recharge. The aquifers are mostly in old volcanic rocks and alluvial deposits. All spring waters are brackish, of the sodium chloride type due to intensive concentration of precipitation due aridity and for deep groundwater to additional water-rock interaction in slowly renewed groundwater and mixing with deep seated brines. The heavy 6 18 0 and 6 2 H values in spring water are explained by recharge by the arrival of moist air masses from the Pacific Ocean and the originally lighter values in the deep wells can be associated to past recharge by air masses coming from the Atlantic Ocean. Current recharge is assumed almost nil but it was significant in past wetter-than-present periods, increasing groundwater reserves, which are not yet exhausted. To explain the observed chloride content and radiocarbon (14 C) activity, a well-mixed (exponential) flow model has been considered for aquifer recharge. The average residence time of groundwater feeding the springs has been estimated between land 2 kyr, up to 5 kyr and between 7 and 13 kyr for deep well water, assuming that current recharge is much less than during the previous wetter period. The recharge period feeding the coastal springs could have been produced 1 to 5 kyr BP, was already inhabited, and recharge in the Michilla mine was produced during the 10 to 14.5 kyr BP CAPE (Central Andean Pluvial Event) pluvial events of the central Andes. The approximate coincidence of turnover time with the past wet periods, as revealed by paleoclimate data, points to significant recharge during them. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Recharge Arid zones Atacama Desert Stable isotopes Groundwater |
类型 | Article |
语种 | 英语 |
国家 | Chile ; Spain ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000426355900014 |
WOS关键词 | CLIMATE-CHANGE ; ISOTOPIC COMPOSITION ; COASTAL CORDILLERA ; TARAPACA REGION ; VOLCANIC AREA ; VARIABILITY ; HOLOCENE ; BASIN ; FLOW ; FOG |
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/2XILL650/212940 |
作者单位 | 1.Univ Catolica Norte, Dept Ciencias Geol, Antofagasta, Chile; 2.Northern Catholic Univ, CEITSAZA Res & Technol Ctr Water Desert, Antofagasta, Chile; 3.Tech Univ Catalonia UPC, Royal Acad Sci Spain, Dept Civil & Environm Engn, Groundwater Hydrol Grp, Barcelona, Spain; 4.Cornell Univ, Dept Earth & Atmospher Sci, Snee Hall, Ithaca, NY 14853 USA; 5.Cornell Univ, Atkinson Ctr Sustainable Future, Snee Hall, Ithaca, NY 14853 USA; 6.Rutgers State Univ, Earth & Planetary Sci, 610 Taylor Rd, Piscataway, NJ 08854 USA; 7.Tech Univ Catalonia UPC, Hydromodel Host SL, Dept Civil & Environm Engn, Groundwater Hydrol Grp, Barcelona, Spain; 8.Aquageo Proyectos SL, Barcelona, Spain; 9.Min Co Los Pelambres, Av Apoquindo 4001 Piso 18, Santiago, Chile; 10.Univ Barcelona, Dept Earth & Ocean Dynam, C Marti & Franques S-N, E-08028 Barcelona, Spain |
推荐引用方式 GB/T 7714 | Herrera, Christian,Gamboa, Carolina,Custodio, Emilio,et al. Groundwater origin and recharge in the hyperarid Cordillera de la Costa, Atacama Desert, northern Chile[J],2018,624:114-132. |
APA | Herrera, Christian.,Gamboa, Carolina.,Custodio, Emilio.,Jordan, Teresa.,Godfrey, Linda.,...&Saez, Alberto.(2018).Groundwater origin and recharge in the hyperarid Cordillera de la Costa, Atacama Desert, northern Chile.SCIENCE OF THE TOTAL ENVIRONMENT,624,114-132. |
MLA | Herrera, Christian,et al."Groundwater origin and recharge in the hyperarid Cordillera de la Costa, Atacama Desert, northern Chile".SCIENCE OF THE TOTAL ENVIRONMENT 624(2018):114-132. |
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