Determining a composite value for the saturated hydraulic conductivity in a recharge area of the Guarani Aquifer System, using pedotransfer functions

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dc.contributor.authorde Oliveira, Marcelo Eduardo Dias
dc.contributor.authorGastmans, Didier
dc.contributor.authorSacchi, Marcelo Donadelli
dc.contributor.authorRocha, Rodrigo Esteves
dc.contributor.authorde Lima, Camila
dc.contributor.authorDos Santos, Vinícius
dc.contributor.institutionUniversidade do Estado de São Paulo
dc.date.accessioned2022-04-28T19:52:53Z
dc.date.available2022-04-28T19:52:53Z
dc.date.issued2021-01-01
dc.description.abstractThe saturated hydraulic conductivity (Ks ) is an essential property for modeling water and contaminants movement into aquifers. However, Ks is extremely variable, even when considering nearby locations, which poses a challenge for modeling at catchment scales. Field measurements of Ks are most of the time expensive, time-consuming and labor-intensive. This study aimed to obtain, for modeling purposes, and using pedotransfer functions (PTFs), a composite value of Ks at a catchment scale, in a recharge area of the Guarani Aquifer System. Soil samples were taken across the study area, and the Ks for each sampling point were determined by several PTF methods. At the same locations, Ks field measurements were taken using a Guelph permeameter. Average values of Ks for all the sampling points calculated by PTFs were similar to the average value obtained by field measurements. The use of PTFs proved to be a faster and simpler method to efficiently determine the Ks value for the watershed and to capture the stochastic variation in terms of soil pore combination at the watershed scale.en
dc.description.affiliationUniversidade do Estado de São Paulo, SP
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCNPq: 134919/2019-0
dc.description.sponsorshipIdCNPq: 154684/2018-0
dc.description.sponsorshipIdFAPESP: 2018/0666-4
dc.description.sponsorshipIdFAPESP: 2019/03467-3
dc.description.sponsorshipIdCNPq: 404979/2018-1
dc.description.sponsorshipIdCNPq: 800571/2016-9
dc.identifierhttp://dx.doi.org/10.1590/2318-0331.262120210045
dc.identifier.citationRevista Brasileira de Recursos Hidricos, v. 26.
dc.identifier.doi10.1590/2318-0331.262120210045
dc.identifier.issn2318-0331
dc.identifier.scopus2-s2.0-85127504564
dc.identifier.urihttp://hdl.handle.net/11449/223757
dc.language.isoeng
dc.relation.ispartofRevista Brasileira de Recursos Hidricos
dc.sourceScopus
dc.subjectGuarani Aquifer System
dc.subjectHydraulic conductivity
dc.subjectPedotransfer function
dc.subjectRecharge area
dc.titleDetermining a composite value for the saturated hydraulic conductivity in a recharge area of the Guarani Aquifer System, using pedotransfer functionsen
dc.titleDeterminação de um valor composto para a condutividade hidráulica saturada em uma área de recarga do Sistema Aquífero Guarani, utilizando funções pedotransferpt
dc.typeArtigo

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