Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)

Herms, Ignasi; Jódar, Jorge; Soler i Gil, Albert; Lambán Jiménez, Luis Javier; Custodio, Emilio; Núñez, Joan Agustí; Arnó, Georgina; Parcerisa i Duocastella, David; Jorge-Sánchez, Joan

Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)

The Port del Comte Massif (SE, Pyrenees) contains one of the most important vulnerable and strategic karst aquifers for supplying freshwater to the city of Barcelona (Spain). It is a fragile system, whose possible environmental impact is highly conditioned by land use. To improve the hydrogeological...

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Autores:	Herms, Ignasi, Jódar, Jorge, Soler i Gil, Albert, Lambán Jiménez, Luis Javier, Custodio, Emilio, Núñez, Joan Agustí, Arnó, Georgina, Parcerisa i Duocastella, David, Jorge-Sánchez, Joan
Tipo de recurso:	artículo
Estado:	Versión publicada
Fecha de publicación:	2021
País:	España
Institución:	Universidad de Barcelona
Repositorio:	Dipòsit Digital de la UB
OAI Identifier:	oai:diposit.ub.edu:2445/183214
Acceso en línea:	https://hdl.handle.net/2445/183214
Access Level:	acceso abierto
Palabra clave:	Hidrogeologia Carst Pirineu català (Catalunya) Hydrogeology Karst Catalonian pyrenees (Catalonia)

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spelling	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)Herms, IgnasiJódar, JorgeSoler i Gil, AlbertLambán Jiménez, Luis JavierCustodio, EmilioNúñez, Joan AgustíArnó, GeorginaParcerisa i Duocastella, DavidJorge-Sánchez, JoanHidrogeologiaCarstPirineu català (Catalunya)HydrogeologyKarstCatalonian pyrenees (Catalonia)The Port del Comte Massif (SE, Pyrenees) contains one of the most important vulnerable and strategic karst aquifers for supplying freshwater to the city of Barcelona (Spain). It is a fragile system, whose possible environmental impact is highly conditioned by land use. To improve the hydrogeological knowledge of the system, between September 2013 and October 2015, a detailed fieldwork was carried out for the revision of the geological model, the inventory of water points, and the in situ physico-chemical characterization on major elements and isotopes of up to a total of 43 springs, as well as precipitation water. This paper focuses on the characterization of the geochemical processes that allow explanation of the observed chemical variability of groundwater drained by the pristine aquifer system to determine the origin of salinity. The results show that the main process is the dissolution of calcite and dolomite, followed by gypsum and halite, and a minor cation exchange-like process. Sulfur and oxygen isotopes from dissolved sulfate in the studied springs point out a geogenic origin related to the dissolution of gypsum from Triassic and Tertiary materials, and that the contribution from anthropogenic sources, like fertilizers, is lower. Nitrate in groundwater is not an important issue, with a few localized cases related with agricultural activities. The multidisciplinary approach has allowed the development of a consistent hydrogeological conceptual model of the functioning of the aquifer system, which can be replicated in other places to understand the geogenic character of the hydrogeochemistry.MDPI2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/183214Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3390/w13202891Water, 2021, vol. 13, num. 20, p. 2891https://doi.org/10.3390/w13202891info:eu-repo/grantAgreement/EC/H2020/731166cc-by (c) Herms, Ignasi et al., 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1832142026-05-27T06:46:51Z
dc.title.none.fl_str_mv	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
title	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
spellingShingle	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees) Herms, Ignasi Hidrogeologia Carst Pirineu català (Catalunya) Hydrogeology Karst Catalonian pyrenees (Catalonia)
title_short	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
title_full	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
title_fullStr	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
title_full_unstemmed	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
title_sort	Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)
dc.creator.none.fl_str_mv	Herms, Ignasi Jódar, Jorge Soler i Gil, Albert Lambán Jiménez, Luis Javier Custodio, Emilio Núñez, Joan Agustí Arnó, Georgina Parcerisa i Duocastella, David Jorge-Sánchez, Joan
author	Herms, Ignasi
author_facet	Herms, Ignasi Jódar, Jorge Soler i Gil, Albert Lambán Jiménez, Luis Javier Custodio, Emilio Núñez, Joan Agustí Arnó, Georgina Parcerisa i Duocastella, David Jorge-Sánchez, Joan
author_role	author
author2	Jódar, Jorge Soler i Gil, Albert Lambán Jiménez, Luis Javier Custodio, Emilio Núñez, Joan Agustí Arnó, Georgina Parcerisa i Duocastella, David Jorge-Sánchez, Joan
author2_role	author author author author author author author author
dc.subject.none.fl_str_mv	Hidrogeologia Carst Pirineu català (Catalunya) Hydrogeology Karst Catalonian pyrenees (Catalonia)
topic	Hidrogeologia Carst Pirineu català (Catalunya) Hydrogeology Karst Catalonian pyrenees (Catalonia)
description	The Port del Comte Massif (SE, Pyrenees) contains one of the most important vulnerable and strategic karst aquifers for supplying freshwater to the city of Barcelona (Spain). It is a fragile system, whose possible environmental impact is highly conditioned by land use. To improve the hydrogeological knowledge of the system, between September 2013 and October 2015, a detailed fieldwork was carried out for the revision of the geological model, the inventory of water points, and the in situ physico-chemical characterization on major elements and isotopes of up to a total of 43 springs, as well as precipitation water. This paper focuses on the characterization of the geochemical processes that allow explanation of the observed chemical variability of groundwater drained by the pristine aquifer system to determine the origin of salinity. The results show that the main process is the dissolution of calcite and dolomite, followed by gypsum and halite, and a minor cation exchange-like process. Sulfur and oxygen isotopes from dissolved sulfate in the studied springs point out a geogenic origin related to the dissolution of gypsum from Triassic and Tertiary materials, and that the contribution from anthropogenic sources, like fertilizers, is lower. Nitrate in groundwater is not an important issue, with a few localized cases related with agricultural activities. The multidisciplinary approach has allowed the development of a consistent hydrogeological conceptual model of the functioning of the aquifer system, which can be replicated in other places to understand the geogenic character of the hydrogeochemistry.
publishDate	2021
dc.date.none.fl_str_mv	2021
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	https://hdl.handle.net/2445/183214
url	https://hdl.handle.net/2445/183214
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
dc.relation.none.fl_str_mv	Reproducció del document publicat a: https://doi.org/10.3390/w13202891 Water, 2021, vol. 13, num. 20, p. 2891 https://doi.org/10.3390/w13202891 info:eu-repo/grantAgreement/EC/H2020/731166
dc.rights.none.fl_str_mv	cc-by (c) Herms, Ignasi et al., 2021 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess
rights_invalid_str_mv	cc-by (c) Herms, Ignasi et al., 2021 https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.publisher.none.fl_str_mv	MDPI
publisher.none.fl_str_mv	MDPI
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

Identification of Natural and Anthropogenic Geochemical Processes Determining the Groundwater Quality in Port del Comte High Mountain Karst Aquifer (SE, Pyrenees)

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