Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management

The Niebla-Posadas (NP) aquifer in southern Spain is one of the main groundwater sources for the lower Guadalquivir Valley, a semiarid region supporting an important population, agriculture and industry. To contribute to the understanding of this aquifer the assessment of sustainable use of groundwa...

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Autores: Scheiber, Laura, Ayora, Carles, Vázquez Suñé, Enric, Cendón, D.I., Soler i Gil, Albert, Custodio, Emilio, Baquero, J.C.
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/163075
Acesso em linha:https://hdl.handle.net/2445/163075
Access Level:acceso abierto
Palavra-chave:Hidrologia d'aigües subterrànies
Aqüífers
Isòtops estables en ecologia
Groundwater hydrology
Aquifers
Stable isotopes in ecological research
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repository_id_str
spelling Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its managementScheiber, LauraAyora, CarlesVázquez Suñé, EnricCendón, D.I.Soler i Gil, AlbertCustodio, EmilioBaquero, J.C.Hidrologia d'aigües subterràniesAqüífersIsòtops estables en ecologiaGroundwater hydrologyAquifersStable isotopes in ecological researchThe Niebla-Posadas (NP) aquifer in southern Spain is one of the main groundwater sources for the lower Guadalquivir Valley, a semiarid region supporting an important population, agriculture and industry. To contribute to the understanding of this aquifer the assessment of sustainable use of groundwater, the residence time of groundwater in the NP aquifer has been estimated using 3H, 14C and 36Cl. Along the flow paths, recharged groundwater mixes with NaCl-type waters and undergoes calcite dissolution and is further modified by cation exchange (Ca Na). Consequently, the water loses most of its calcium and the residual d13CDIC in the groundwater is isotopically enriched. Further modifications take place along the flow path in deeper zones, where depleted d13CDIC values are overprinted due to SO42 and iron oxide reduction, triggered by the presence of organic matter. Dating with 3H, 14C and 36Cl has allowed the differentiation of several zones: recharge zone (<0.06 ky), intermediate zone (0.06 20 ky), deep zone 1 (20 30 ky), and deep zone 2 (>30 ky). An apparent link between the tectonic structure and the groundwater residence time zonation can be established. Regional faults clearly separates deep zone 1 from the distinctly older age (>30 ky) deep zone 2. From the estimated residence times, two groundwater areas of different behavior can be differentiated within the aquifer.Elsevier B.V.2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/163075Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaEspañolVersió postprint del document publicat a: https://doi.org/10.1016/j.jhydrol.2015.01.076Journal of Hydrology, 2015, vol. 523, p. 624-635https://doi.org/10.1016/j.jhydrol.2015.01.076(c) Elsevier B.V., 2015info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1630752026-05-27T06:46:51Z
dc.title.none.fl_str_mv Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
title Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
spellingShingle Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
Scheiber, Laura
Hidrologia d'aigües subterrànies
Aqüífers
Isòtops estables en ecologia
Groundwater hydrology
Aquifers
Stable isotopes in ecological research
title_short Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
title_full Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
title_fullStr Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
title_full_unstemmed Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
title_sort Recent and old groundwater in the Niebla-Posadas regional aquifer (southern Spain): Implications for its management
dc.creator.none.fl_str_mv Scheiber, Laura
Ayora, Carles
Vázquez Suñé, Enric
Cendón, D.I.
Soler i Gil, Albert
Custodio, Emilio
Baquero, J.C.
author Scheiber, Laura
author_facet Scheiber, Laura
Ayora, Carles
Vázquez Suñé, Enric
Cendón, D.I.
Soler i Gil, Albert
Custodio, Emilio
Baquero, J.C.
author_role author
author2 Ayora, Carles
Vázquez Suñé, Enric
Cendón, D.I.
Soler i Gil, Albert
Custodio, Emilio
Baquero, J.C.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Hidrologia d'aigües subterrànies
Aqüífers
Isòtops estables en ecologia
Groundwater hydrology
Aquifers
Stable isotopes in ecological research
topic Hidrologia d'aigües subterrànies
Aqüífers
Isòtops estables en ecologia
Groundwater hydrology
Aquifers
Stable isotopes in ecological research
description The Niebla-Posadas (NP) aquifer in southern Spain is one of the main groundwater sources for the lower Guadalquivir Valley, a semiarid region supporting an important population, agriculture and industry. To contribute to the understanding of this aquifer the assessment of sustainable use of groundwater, the residence time of groundwater in the NP aquifer has been estimated using 3H, 14C and 36Cl. Along the flow paths, recharged groundwater mixes with NaCl-type waters and undergoes calcite dissolution and is further modified by cation exchange (Ca Na). Consequently, the water loses most of its calcium and the residual d13CDIC in the groundwater is isotopically enriched. Further modifications take place along the flow path in deeper zones, where depleted d13CDIC values are overprinted due to SO42 and iron oxide reduction, triggered by the presence of organic matter. Dating with 3H, 14C and 36Cl has allowed the differentiation of several zones: recharge zone (<0.06 ky), intermediate zone (0.06 20 ky), deep zone 1 (20 30 ky), and deep zone 2 (>30 ky). An apparent link between the tectonic structure and the groundwater residence time zonation can be established. Regional faults clearly separates deep zone 1 from the distinctly older age (>30 ky) deep zone 2. From the estimated residence times, two groundwater areas of different behavior can be differentiated within the aquifer.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/163075
url https://hdl.handle.net/2445/163075
dc.language.none.fl_str_mv Español
language_invalid_str_mv Español
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.jhydrol.2015.01.076
Journal of Hydrology, 2015, vol. 523, p. 624-635
https://doi.org/10.1016/j.jhydrol.2015.01.076
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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