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Assessment of chloride natural background levels by applying statistical approaches. Analyses of European coastal aquifers in different environments

2022-01Journal article Open access
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dc.contributor.authorPulido-Velazquez, D.
dc.contributor.authorBaena-Ruiz, L.
dc.contributor.authorFernandes, Judite
dc.contributor.authorArnó, Georgina
dc.contributor.authorHinsby, Klaus
dc.contributor.authorVoutchkova, D. D.
dc.contributor.authorHansen, B.
dc.contributor.authorRetike, I.
dc.contributor.authorBikse, J.
dc.contributor.authorCollados-Lara, A. J.
dc.contributor.authorCamps, V.
dc.contributor.authorMorel, I.
dc.contributor.authorGrima-Olmedo, J.
dc.contributor.authorLuque-Espinar, J. A.
dc.date.accessioned2022-05-17T10:36:20Z
dc.date.available2022-05-17T10:36:20Z
dc.date.issued2022-01
dc.description.abstractABSTRACT: Estimated natural background levels (NBLs) are needed to assess groundwater chemical status according to the EU Groundwater Directive. They are commonly derived for different substances by applying statistical methodologies. Due to the complexity of the sea water intrusion process, some of those methods do not always provide appropriate assessment of chloride NBLs. This paper analyzes the applicability of different NBL estimation methods in five EU coastal aquifers with significant differences in available datasets and hydrogeological set-tings. A sensitivity analysis of results to different constraints was performed to remove samples with anthro-pogenic impacts. A novel statistical approach combining different methods to identify the range of chloride NBLs is proposed. In all pilots the estimated NBLs were below 85 mg/L and fitted well with previous studies and expert judgment, except Campina del Faro aquifer (the maximum being 167.5 mg/L). Although this approach is more time consuming, it provides a more robust solution.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPulido-Velazquez, D... [et.al.] - Assessment of chloride natural background levels by applying statistical approaches. Analyses of European coastal aquifers in different environments. In: Marine Pollution Bulletin, 2022, Vol. 174, article nº 113303pt_PT
dc.identifier.doi10.1016/j.marpolbul.2021.113303pt_PT
dc.identifier.eissn1879-3363
dc.identifier.issn0025-326X
dc.identifier.urihttp://hdl.handle.net/10400.9/3857
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationGeoE.171.008-TACTICpt_PT
dc.relationGeoE.171.008-HOVERpt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.marpolbul.2021.113303pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectNatural background levelpt_PT
dc.subjectChloridespt_PT
dc.subjectSaltwater intrusionpt_PT
dc.subjectCoastal aquiferspt_PT
dc.subjectEnvironmental monitoringpt_PT
dc.subjectEuropean pilotspt_PT
dc.titleAssessment of chloride natural background levels by applying statistical approaches. Analyses of European coastal aquifers in different environmentspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleMarine Pollution Bulletinpt_PT
oaire.citation.volume174pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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