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Groundwater response to climate variability in Mediterranean type climate zones with comparisons of California (USA) and Portugal

2022Journal article Open access
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dc.contributor.authorMalmgren, Katherine
dc.contributor.authorNeves, Maria
dc.contributor.authorGurdak, Jason J.
dc.contributor.authorCosta, Luis
dc.contributor.authorMonteiro, José
dc.date.accessioned2022-06-20T12:09:03Z
dc.date.available2022-06-20T12:09:03Z
dc.date.issued2022
dc.description.abstractAquifers are a fundamental source of freshwater, yet they are particularly vulnerable in coastal regions with Mediterranean type climate, due to both climatic and anthropogenic pressures. This comparative study examines the interrelationships between ocean-atmosphere teleconnections, groundwater levels and precipitation in coastal aquifers of California (USA) and Portugal. Piezometric and climate indices (1989-2019) are analyzed using singular spectral analysis and wavelet transform methods. Singular spectral analysis identifies signals consistent with the six dominant climate patterns: the Pacific Decadal Oscillation (PDO), the El Nino-Southern Oscillation (ENSO), and the Pacific/North American Oscillation (PNA) in California, and the North Atlantic Oscillation (NAO), the Eastern Atlantic Oscillation (EA) and the Scandinavian Pattern (SCAND) in Portugal. Lower-frequency oscillations have a greater influence on hydrologic patterns, with PDO (52.75%) and NAO (46.25%) on average accounting for the largest amount of groundwater level variability. Wavelet coherences show nonstationary covariability between climate patterns and groundwater levels in distinct period bands: 4-8 years for PDO, 2-4 years for ENSO, 1-2 years for PNA, 5-8 years for NAO, 2-4 years for EA and 2-8 years for SCAND. Wavelet coherence patterns also show that coupled climate patterns (NAO+ EA- and paired PDO and ENSO phases) are associated with major drought periods in both the Mediterranean climate zones.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s10040-022-02470-zpt_PT
dc.identifier.issn1431-2174
dc.identifier.urihttp://hdl.handle.net/10400.1/17860
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCoastal aquiferspt_PT
dc.subjectClimate changept_PT
dc.subjectGroundwater levelpt_PT
dc.subjectOcean-atmosphere teleconnectionspt_PT
dc.subjectUSApt_PT
dc.subjectPortugalpt_PT
dc.titleGroundwater response to climate variability in Mediterranean type climate zones with comparisons of California (USA) and Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage782pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage767pt_PT
oaire.citation.titleHydrogeology Journalpt_PT
oaire.citation.volume30pt_PT
person.familyNameMalmgren
person.familyNameNeves
person.familyNameCosta
person.familyNameMonteiro
person.givenNameKatherine
person.givenNameMaria
person.givenNameLuis
person.givenNameJosé
person.identifier.ciencia-idEE10-FE84-F1E9
person.identifier.ciencia-idF016-4214-4A45
person.identifier.ciencia-id6F18-2FC6-D658
person.identifier.ciencia-idFB11-6A18-6D79
person.identifier.orcid0000-0002-2239-6363
person.identifier.orcid0000-0001-5726-3467
person.identifier.orcid0000-0001-6595-8285
person.identifier.orcid0000-0002-3967-1480
person.identifier.ridA-7703-2013
person.identifier.scopus-author-id7103415176
person.identifier.scopus-author-id7103134375
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication5aa08a50-0e64-4d5d-acd6-d817b92e74c5
relation.isAuthorOfPublication5690cd51-3ef8-44f9-9b26-4840ea9dbc85
relation.isAuthorOfPublicationcf855945-2315-4309-a3c3-af8b25ac55ec
relation.isAuthorOfPublication.latestForDiscoverycf855945-2315-4309-a3c3-af8b25ac55ec

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