Hydraulic and auto-depurative characteristics of the Gualaxo do Norte River after the Fundão dam rupture.

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dc.contributor.authorReis, Deyse Almeida dos
dc.contributor.authorSilva, Priscila Kelly da
dc.contributor.authorAzevedo, Igor Andrade
dc.contributor.authorCastro, Ana Leticia Pilz de
dc.contributor.authorSantiago, Aníbal da Fonseca
dc.date.accessioned2021-11-12T20:40:35Z
dc.date.available2021-11-12T20:40:35Z
dc.date.issued2021pt_BR
dc.description.abstractThe hydraulic characteristics of the Gualaxo do Norte River (RGN), a tributary of the upper Rio Doce basin, were affected in November 2015 by the rupture of the iron ore tailings dam at Fundão, in Bento Rodrigues, Mariana, Minas Gerais. We analyzed two sections of the RGN, located upstream and downstream of the Fundão dam. Measurements were taken at 11 stations along the main river in distinct seasonal periods, including river depth, river width, velocity, and flow. We also calculated the deoxygenation coefficient (K1) and the reaeration coefficient (K2) and collected elaborate bathymetric profiles of the sections. Anthropogenic interference influenced the river’s hydraulic characteristics mainly in relation to the depth. In upstream sections, the changes are believed to be due to mining activities at the head of the river, while downstream effects were due to the introduction of iron ore tailings coming from the rupture of the Fundão dam. Despite these influences, deoxygenation coefficient values were typical for clean water, and the reaeration coefficient findings show that the RGN is efficient at biological degradation of the organic matter even receiving untreated domestic sewage from riparian communities. With the results obtained in this work, we seek to replicate a source of information about the current state of the region and to contribute information to future river planning, control, and restoration projects.pt_BR
dc.identifier.citationREIS, D. A. dos. et al. Hydraulic and auto-depurative characteristics of the Gualaxo do Norte River after the Fundão dam rupture. Environmental Science and Pollution Research, v. 28, p. 1, maio. 2021. Disponível em: <https://link.springer.com/article/10.1007%2Fs11356-021-14317-3>. Acesso em: 12 set. 2021.pt_BR
dc.identifier.doihttps://doi.org/10.1007/s11356-021-14317-3pt_BR
dc.identifier.issn1614-7499
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/13925
dc.identifier.uri2https://link.springer.com/article/10.1007%2Fs11356-021-14317-3pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectBathymetric profilespt_BR
dc.subjectDeoxygenation coefficientpt_BR
dc.subjectEnvironmental disasterpt_BR
dc.subjectReaeration coefficientpt_BR
dc.subjectRio Docept_BR
dc.titleHydraulic and auto-depurative characteristics of the Gualaxo do Norte River after the Fundão dam rupture.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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