Hydrochemistry applied to assess the chemical weathering and soil removal rates in the Sorocaba River basin, Sao Paulo State

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dc.contributor.authorFernandes, Alexandre Martins [UNESP]
dc.contributor.authorConceicao, Fabiano Tomazini da [UNESP]
dc.contributor.authorMortatti, Jeferson
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2020-12-10T17:30:51Z
dc.date.available2020-12-10T17:30:51Z
dc.date.issued2020-01-01
dc.description.abstractChemical weathering and soil removal rates are responsible for the Earth's landscape, composition of surface and ground-water, producing the soils and buffering the composition of the atmosphere. This study aimed to assess the chemical weathering and soil removal rates in the Sorocaba River basin, Sao Paulo State, Brazil, allowing answering the questions about the dynamics of fluvial transport of dissolved and suspended solids, the chemical weathering processes and associated atmospheric/soil CO2 consumption, and the relationship between chemical weathering and soil erosion rates. The annual specific flux of total suspended solids and total dissolved solids were 49.59 and 60.97 t/km(2) /yr. The chemical weathering process dominant in the Sorocaba River basin was the monosiallitization (RE = 2.4), with an associated atmospheric/soil CO2 consumption of 2.3 x 10(5)mol/km(2) /yr. The chemical weathering and soil removal rates were 7.2 and 29.8 m/Myr, respectively, indicating a soil thickness reduction. Finally, the soil removal rate in the Sorocaba River basin is almost 3-fold higher than the Cenozoic soil removal rates, being this difference related to the current land use which increased the soil removal processes.en
dc.description.affiliationUniv Estadual Paulista, Rio Claro, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Piracicaba, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipGraduate Program of the Faculty of Civil Engineering of UNESP Bauru
dc.description.sponsorshipIdFAPESP: 08/57104-4
dc.description.sponsorshipIdFAPESP: 08/09369-9
dc.description.sponsorshipIdCNPq: 134169/2009-3
dc.format.extent10
dc.identifierhttp://dx.doi.org/10.1590/2317-4889202020190030
dc.identifier.citationBrazilian Journal Of Geology. Sao Paulo: Soc Brasileira Geologia, v. 50, n. 1, 10 p., 2020.
dc.identifier.doi10.1590/2317-4889202020190030
dc.identifier.fileS2317-48892020000100301.pdf
dc.identifier.issn2317-4889
dc.identifier.scieloS2317-48892020000100301
dc.identifier.urihttp://hdl.handle.net/11449/195330
dc.identifier.wosWOS:000528184200001
dc.language.isoeng
dc.publisherSoc Brasileira Geologia
dc.relation.ispartofBrazilian Journal Of Geology
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectFluvial geochemistry
dc.subjectdisturbed watershed
dc.subjectwater-rock interactions
dc.subjectrainwater and anthropogenic influences
dc.titleHydrochemistry applied to assess the chemical weathering and soil removal rates in the Sorocaba River basin, Sao Paulo Stateen
dc.typeArtigo
dcterms.rightsHolderSoc Brasileira Geologia
unesp.author.orcid0000-0002-7059-3142[1]

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