Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007)
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.25249/0375-7536.2011414619628 http://hdl.handle.net/11449/212239 |
Resumo: | This paper evaluates the behavior of suspended sediment load of the river Ivaí over a period of 32 years measured by the station further downstream the river (Novo Porto Taquara). The most suitable parameters for this assessment were the annual discharge of suspended sediment and water obtained from SUDERSA. The relationship between the concentration of suspended sediment and discharge of water had not a very good correlation (R2 = 0,56) and hysteresis effect is quite clear. The justification for this behavior is given by the heterogeneity of the hydrological regime and basin occupation. There were no significant changes in annual flows which have remained the same during the study period. Already the discharge of suspended sediment showed a small gradual decline in which the end of the period (2007), the river carries less than 0.65 Mton at the beginning (1977). This reduction in suspended sediment transported is probably due to changes in soil management for agriculture. |
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Repositório Institucional da UNESP |
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Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007)Temporal variability in transportation of sediment in the river Ivaí - Paraná (1977-2007)suspended sedimentriver regimebasin managementriver flowriver dischargesedimento suspensoregime fluvialmanejo de baciavazão fluvialdescarga fluvialThis paper evaluates the behavior of suspended sediment load of the river Ivaí over a period of 32 years measured by the station further downstream the river (Novo Porto Taquara). The most suitable parameters for this assessment were the annual discharge of suspended sediment and water obtained from SUDERSA. The relationship between the concentration of suspended sediment and discharge of water had not a very good correlation (R2 = 0,56) and hysteresis effect is quite clear. The justification for this behavior is given by the heterogeneity of the hydrological regime and basin occupation. There were no significant changes in annual flows which have remained the same during the study period. Already the discharge of suspended sediment showed a small gradual decline in which the end of the period (2007), the river carries less than 0.65 Mton at the beginning (1977). This reduction in suspended sediment transported is probably due to changes in soil management for agriculture.Este trabalho avalia o comportamento da carga sedimentar suspensa do rio Ivaí num período de 30 anos aferidos por sua estação mais jusante de Novo Porto Taquara. Os parâmetros utilizados neste estudo foram as descargas anuais de sedimento suspenso e de água obtidas a partir de dados da SUDERSA. A relação entre a concentração de sedimento suspenso e a descarga de água não apresentou uma correlação muito boa (R2 = 0,56), sendo bastante evidente o efeito de histerese. A justificativa para esse comportamento é dada pelo regime hidrológico heterogêneo e pela ocupação da bacia. Não foram observadas alterações significativas nas vazões anuais, que permaneceram as mesmas durante o período estudado. Já a descarga de sedimento suspenso apresentou um pequeno declínio gradual mostrando que no final do período (2007), o rio transporta 0,65 Mton menos do que no começo (1977). Esta redução de sedimento suspenso transportado é provavelmente devido a alterações no manejo do solo para o cultivo agrícola.Universidade Estadual Paulista, Instituto de Geociências e Ciências ExatasUniversidade Estadual de Maringá, Grupo de Estudos Multidisciplinares do AmbienteUniversidade Estadual de Maringá, Departamento de GeografiaUniversidade Estadual Paulista, Instituto de Geociências e Ciências ExatasSociedade Brasileira de GeologiaUniversidade Estadual Paulista (Unesp)Universidade Estadual de MaringáLeli, Isabel Terezinha [UNESP]Stevaux, Jose CândidoNóbrega, Maria Tereza DaSouza, Edvard Elias De2021-07-14T10:36:47Z2021-07-14T10:36:47Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article619-628application/pdfhttp://dx.doi.org/10.25249/0375-7536.2011414619628Brazilian Journal of Geology. Sociedade Brasileira de Geologia, v. 41, n. 04, p. 619-628, 2011.2317-48892317-4692http://hdl.handle.net/11449/21223910.25249/0375-7536.2011414619628S2317-48892011000400619S2317-48892011000400619.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporBrazilian Journal of Geologyinfo:eu-repo/semantics/openAccess2023-11-26T06:12:58Zoai:repositorio.unesp.br:11449/212239Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:46:44.701262Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) Temporal variability in transportation of sediment in the river Ivaí - Paraná (1977-2007) |
title |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) |
spellingShingle |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) Leli, Isabel Terezinha [UNESP] suspended sediment river regime basin management river flow river discharge sedimento suspenso regime fluvial manejo de bacia vazão fluvial descarga fluvial |
title_short |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) |
title_full |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) |
title_fullStr |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) |
title_full_unstemmed |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) |
title_sort |
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007) |
author |
Leli, Isabel Terezinha [UNESP] |
author_facet |
Leli, Isabel Terezinha [UNESP] Stevaux, Jose Cândido Nóbrega, Maria Tereza Da Souza, Edvard Elias De |
author_role |
author |
author2 |
Stevaux, Jose Cândido Nóbrega, Maria Tereza Da Souza, Edvard Elias De |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Estadual de Maringá |
dc.contributor.author.fl_str_mv |
Leli, Isabel Terezinha [UNESP] Stevaux, Jose Cândido Nóbrega, Maria Tereza Da Souza, Edvard Elias De |
dc.subject.por.fl_str_mv |
suspended sediment river regime basin management river flow river discharge sedimento suspenso regime fluvial manejo de bacia vazão fluvial descarga fluvial |
topic |
suspended sediment river regime basin management river flow river discharge sedimento suspenso regime fluvial manejo de bacia vazão fluvial descarga fluvial |
description |
This paper evaluates the behavior of suspended sediment load of the river Ivaí over a period of 32 years measured by the station further downstream the river (Novo Porto Taquara). The most suitable parameters for this assessment were the annual discharge of suspended sediment and water obtained from SUDERSA. The relationship between the concentration of suspended sediment and discharge of water had not a very good correlation (R2 = 0,56) and hysteresis effect is quite clear. The justification for this behavior is given by the heterogeneity of the hydrological regime and basin occupation. There were no significant changes in annual flows which have remained the same during the study period. Already the discharge of suspended sediment showed a small gradual decline in which the end of the period (2007), the river carries less than 0.65 Mton at the beginning (1977). This reduction in suspended sediment transported is probably due to changes in soil management for agriculture. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011 2021-07-14T10:36:47Z 2021-07-14T10:36:47Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.25249/0375-7536.2011414619628 Brazilian Journal of Geology. Sociedade Brasileira de Geologia, v. 41, n. 04, p. 619-628, 2011. 2317-4889 2317-4692 http://hdl.handle.net/11449/212239 10.25249/0375-7536.2011414619628 S2317-48892011000400619 S2317-48892011000400619.pdf |
url |
http://dx.doi.org/10.25249/0375-7536.2011414619628 http://hdl.handle.net/11449/212239 |
identifier_str_mv |
Brazilian Journal of Geology. Sociedade Brasileira de Geologia, v. 41, n. 04, p. 619-628, 2011. 2317-4889 2317-4692 10.25249/0375-7536.2011414619628 S2317-48892011000400619 S2317-48892011000400619.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Brazilian Journal of Geology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
619-628 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Geologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Geologia |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128978586697728 |