High-resolution aquifer analog of fluvial-aeolian sediments of the Guarani aquifer system

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dc.contributor.authorHöyng, Dominik
dc.contributor.authorD'Affonseca, Fernando Mazo
dc.contributor.authorBayer, Peter
dc.contributor.authorde Oliveira, Edson Gomes [UNESP]
dc.contributor.authorPerinotto, José Alexandre de Jesus [UNESP]
dc.contributor.authorReis, Fábio [UNESP]
dc.contributor.authorWeiß, Holger
dc.contributor.authorGrathwohl, Peter
dc.contributor.institutionCenter for Applied Geosciences
dc.contributor.institutionTIMGEO GmbH
dc.contributor.institutionETH Zurich
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionHelmholtz Center for Environmental Research (UFZ)
dc.date.accessioned2014-05-27T11:30:08Z
dc.date.available2014-05-27T11:30:08Z
dc.date.issued2013-08-07
dc.description.abstractThe Guarani aquifer system (GAS) represents one of the biggest aquifers in the world and is the most relevant groundwater resource in South America. For the first time, by combining field and laboratory measurements, a high-resolution aquifer analog model of fluvial-aeolian sediments of the GAS in São Paulo State (Brazil) is constructed. Three parallel sections of frontal outcrops, 28 m × 5.8 m, and two parallel sections of lateral outcrops, 7 m × 5.8 m, are recorded during open-pit mining of sandy sediments and describe in detail the three-dimensional distribution of the local lithofacies and hydrofacies. Variations of hydraulic conductivity, K, and porosity, n, are resolved on the centimeter scale, and the most permeable units of the fluvial-aeolian facies association are identified. The constructed aquifer analog model shows moderate hydraulic heterogeneity and a mean K value of 1.36 × 10-4 m/s, which is greater than the reported range of K values for the entire GAS in São Paulo State. The results suggest that the examined sedimentary unit constitutes a relevant portion of the GAS in São Paulo State in the context of groundwater extraction and pollution. Moreover, the constructed aquifer analog is considered an ideal basis for future numerical model experiments, aiming at in-depth understanding of the groundwater flow and contaminant transport patterns at this GAS portion or at comparable fluvial-aeolian facies associations. © 2013 Springer-Verlag Berlin Heidelberg.en
dc.description.affiliationUniversity of Tübingen Center for Applied Geosciences, Hölderlinstr. 12, Tübingen, 72074
dc.description.affiliationTIMGEO GmbH, Hölderlinstr. 29, Tübingen, 72074
dc.description.affiliationGeological Institute ETH Zurich, Sonneggstr. 5, Zurich, 8092
dc.description.affiliationInstituto de Geociências e Ciências Exatas UNESP, Univ. Estadual Paulista, Av. 24-A n 1515 - B. Bela Vista, Rio Claro, 13506-900
dc.description.affiliationHelmholtz Center for Environmental Research (UFZ), Permoserstr. 15, Leipzig, 04318
dc.description.affiliationUnespInstituto de Geociências e Ciências Exatas UNESP, Univ. Estadual Paulista, Av. 24-A n 1515 - B. Bela Vista, Rio Claro, 13506-900
dc.format.extent1-14
dc.identifierhttp://dx.doi.org/10.1007/s12665-013-2684-5
dc.identifier.citationEnvironmental Earth Sciences, p. 1-14.
dc.identifier.doi10.1007/s12665-013-2684-5
dc.identifier.issn1866-6280
dc.identifier.issn1866-6299
dc.identifier.scopus2-s2.0-84880937692
dc.identifier.urihttp://hdl.handle.net/11449/76231
dc.identifier.wosWOS:000333014500009
dc.language.isoeng
dc.relation.ispartofEnvironmental Earth Sciences
dc.relation.ispartofjcr1.435
dc.relation.ispartofsjr0,552
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectFluvial-aeolian sediments
dc.subjectGroundwater reservoir analog model
dc.subjectGuarani aquifer
dc.subjectPirambóia Formation
dc.subjectReservoir characterization
dc.titleHigh-resolution aquifer analog of fluvial-aeolian sediments of the Guarani aquifer systemen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.author.orcid0000-0003-4884-5873[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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Artigos - Geologia Aplicada - IGCE