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dc.contributor.authorHerrera Lameli, Christian
dc.contributor.authorCustodio Gimena, Emilio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.date.accessioned2014-07-23T07:48:06Z
dc.date.available2014-07-23T07:48:06Z
dc.date.created2014-05
dc.date.issued2014-05
dc.identifier.citationHerrera Lameli, Ch.; Custodio, E. Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta. "Andean Geology", Maig 2014, vol. 41, núm. 2, p. 314-341.
dc.identifier.issn0718-7106
dc.identifier.urihttp://hdl.handle.net/2117/23586
dc.description.abstractThe origin of waters from small springs located at the hyper-arid northern coast of Chile, in the vicinity of Antofagasta, is discussed after hydrogeochemical and isotopic studies and supported by groundwater flow hydrodynamic considerations. Spring water is brackish to saline, with electrical conductivity ranging from 2 to 25 mS/cm. Chemical and water isotope data (O-18 and H-2) show that the rainfall events that produced part of the recharge could correspond to wetter conditions than at present. Their origin could be related to the emplacement of warm sea currents facing the coast of northern Chile, possibly associated to incursions of El Nino Southern Oscillation (ENSO). Radiocarbon dating and preliminary groundwater hydraulic calculations indicate that these spring waters could be remnants of a more significant recharge in the Cordillera de la Costa than that produced today during the less arid period about 5,000 to 3,000 years ago. The exception is Las Vertientes spring which is the only one that receives water transferred from the Central Depression. The springs are the visible discharge of a regional groundwater body in the very low permeability Cordillera de la Costa, whose hydraulic conductivity decreases downward and flow is dominantly though fissures and storage in the low porosity rock matrix.
dc.format.extent28 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
dc.subject.lcshAntofagasta (Chile : Region)
dc.subject.lcshAquifers--South America
dc.subject.otherCordillera de la Costa
dc.subject.otherAntofagasta
dc.subject.otherSpring
dc.subject.otherGroundwater
dc.subject.otherStable isotopes
dc.subject.otherRadiocarbon
dc.subject.otherArid climate
dc.subject.otherRecharge
dc.subject.otherAtacama desert
dc.subject.otherisotopic composition
dc.subject.otherpollen record
dc.subject.otherlat 22-degrees-24-degrees-s
dc.subject.othergroundwater recharge
dc.subject.otherclimate-change
dc.subject.otherregion
dc.subject.otherprecipitation
dc.subject.otherevolution
dc.subject.othernitrate
dc.subject.otherCordillera de la Costa
dc.subject.otherAntofagasta
dc.subject.otherManantiales
dc.subject.otherAguas subterráneas
dc.subject.otherIsótopos estables
dc.subject.otherRadiocarbono
dc.subject.otherClima árido
dc.subject.otherRecarga
dc.titleOrigin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta
dc.typeArticle
dc.subject.lemacAqüífers
dc.subject.lemacXile
dc.contributor.groupUniversitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània
dc.identifier.doi10.5027/andgeoV41n2-a03
dc.relation.publisherversionhttp://www.andeangeology.cl/index.php/revista1/article/view/V41n2-a03
dc.rights.accessOpen Access
local.identifier.drac15014127
dc.description.versionPostprint (published version)
local.citation.authorHerrera Lameli, Ch.; Custodio, E.
local.citation.publicationNameAndean Geology
local.citation.volume41
local.citation.number2
local.citation.startingPage314
local.citation.endingPage341


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