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Climatic and geologic controls on the piezometry of the Querença-Silves karst aquifer, Algarve (Portugal)

2016-06Journal article Open access
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dc.contributor.authorNeves, Maria C.
dc.contributor.authorCosta, Luis
dc.contributor.authorMonteiro, José Paulo
dc.date.accessioned2017-04-07T15:56:36Z
dc.date.available2017-04-07T15:56:36Z
dc.date.issued2016-06
dc.description.abstractKarst aquifers in semi-arid regions, like Queren double dagger a-Silves (Portugal), are particularly vulnerable to climate variability. For the first time in this region, the temporal structure of a groundwater-level time series (1985-2010) was explored using the continuous wavelet transform. The investigation focused on a set of four piezometers, two at each side of the S. Marcos-Quarteira fault, to demonstrate how each of the two sectors of the aquifer respond to climate-induced patterns. Singular spectral analysis applied to an extended set of piezometers enabled identification of several quasi-periodic modes of variability, with periods of 6.5, 4.3, 3.2 and 2.6 years, which can be explained by low-frequency climate patterns. The geologic forcing accounts for similar to 15 % of the differential variability between the eastern and western sectors of the aquifer. The western sector displays spatially homogenous piezometric variations, large memory effects and low-pass filtering characteristics, which are consistent with relatively large and uniform values of water storage capacity and transmissivity properties. In this sector, the 6.5-year mode of variability accounts for similar to 70 % of the total variance of the groundwater levels. The eastern sector shows larger spatial and temporal heterogeneity, is more reactive to short-term variations, and is less influenced by the low-frequency components related to climate patterns.
dc.identifier.doi10.1007/s10040-015-1359-6
dc.identifier.issn1431-2174
dc.identifier.otherAUT: MCN01265; JPM01090;
dc.identifier.urihttp://hdl.handle.net/10400.1/9470
dc.language.isoeng
dc.peerreviewedyes
dc.relationIDL-FCT-UID/GEO/50019/2013
dc.relationDemonstrating Managed Aquifer Recharge as a Solution to Water Scarcity and Drought
dc.relation.isbasedonWOS:000376405400018
dc.titleClimatic and geologic controls on the piezometry of the Querença-Silves karst aquifer, Algarve (Portugal)
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDemonstrating Managed Aquifer Recharge as a Solution to Water Scarcity and Drought
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/619120/EU
oaire.citation.endPage1028
oaire.citation.issue4
oaire.citation.startPage1015
oaire.citation.titleHydrogeology Journal
oaire.citation.volume24
oaire.fundingStreamFP7
person.familyNameNeves
person.familyNameMonteiro
person.givenNameMaria C.
person.givenNameJosé Paulo
person.identifier.ciencia-idF016-4214-4A45
person.identifier.ciencia-idD312-D1AF-5C07
person.identifier.orcid0000-0001-5726-3467
person.identifier.orcid0000-0002-1969-7480
person.identifier.ridA-7703-2013
person.identifier.scopus-author-id7103415176
person.identifier.scopus-author-id55839822400
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccess
rcaap.typearticle
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relation.isAuthorOfPublication8dc8b0c4-e3bd-4e0c-b01d-ba80113f1ddc
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