Dynamics of sediment transport in two subtropical plain rivers of South America
- Autores
- Orfeo, Oscar
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Two rivers located in the subtropical Chaco plain are compared in order to analyse the sediment transport dynamics. Gauging and sediment samples were obtained during different hydrological stages. Grain size and textural parameters were obtained for the bed material. Concentration and transport of suspended sediment were also determined. In the Bermejito River basin, the downstream increment of the discharge generates a predictive response in the sandy bed sediment. Discharge and suspended sediment load show a direct correlation. The Tapenagá River headwaters, composed mainly of fine sediments, are in extensive wetlands with deficient runoff. The sand content of the bed sediment increases constantly towards its confluence with the Parana River, owing to the erosion of old sandy river deposits. Although the concentration of suspended sediment maintains an inverse correlation with discharge, the suspended load increases downstream. In the lower course of this river the aquatic vegetation plays an important role because plants colonize the fluvial system during lower water periods, producing abundant organic matter. At the beginning of the flood period, the deposited fine material is rapidly re-suspended, generating a sudden increase of the wash load concentration together with the discharge increment. During the flood, there is no deposition over the clay-rich bed in the highlands, while the bed becomes increasingly composed of sands in the lower course.
Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina - Materia
-
Sediment Transport
Subtropical Rivers
Fluvial Sedimentology - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/73454
Ver los metadatos del registro completo
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Dynamics of sediment transport in two subtropical plain rivers of South AmericaOrfeo, OscarSediment TransportSubtropical RiversFluvial Sedimentologyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Two rivers located in the subtropical Chaco</place /> plain are compared in order to analyse the sediment transport dynamics. Gauging and sediment samples were obtained during different hydrological stages. Grain size and textural parameters were obtained for the bed material. Concentration and transport of suspended sediment were also determined. In the Bermejito</placename /> River basin</placetype /></place />, the downstream increment of the discharge generates a predictive response in the sandy bed sediment. Discharge and suspended sediment load show a direct correlation. The Tapenagá</placename /> River</placetype /></place /> headwaters, composed mainly of fine sediments, are in extensive wetlands with deficient runoff. The sand content of the bed sediment increases constantly towards its confluence with the Parana River</place />, owing to the erosion of old sandy river deposits. Although the concentration of suspended sediment maintains an inverse correlation with discharge, the suspended load increases downstream. In the lower course of this river the aquatic vegetation plays an important role because plants colonize the fluvial system during lower water periods, producing abundant organic matter. At the beginning of the flood period, the deposited fine material is rapidly re-suspended, generating a sudden increase of the wash load concentration together with the discharge increment. During the flood, there is no deposition over the clay-rich bed in the highlands, while the bed becomes increasingly composed of sands in the lower course.Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaSchweizerbart2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/73454Orfeo, Oscar; Dynamics of sediment transport in two subtropical plain rivers of South America; Schweizerbart; Zeitschrift Fur Geomorphologie. Supplementband; 145; 12-2006; 229-2410044-2798CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.schweizerbart.de/publications/detail/isbn/9783443211455/Zeitschr_f_Geomorphologie_Suppl_Bd_1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:48:45Zoai:ri.conicet.gov.ar:11336/73454instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:48:45.52CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Dynamics of sediment transport in two subtropical plain rivers of South America |
title |
Dynamics of sediment transport in two subtropical plain rivers of South America |
spellingShingle |
Dynamics of sediment transport in two subtropical plain rivers of South America Orfeo, Oscar Sediment Transport Subtropical Rivers Fluvial Sedimentology |
title_short |
Dynamics of sediment transport in two subtropical plain rivers of South America |
title_full |
Dynamics of sediment transport in two subtropical plain rivers of South America |
title_fullStr |
Dynamics of sediment transport in two subtropical plain rivers of South America |
title_full_unstemmed |
Dynamics of sediment transport in two subtropical plain rivers of South America |
title_sort |
Dynamics of sediment transport in two subtropical plain rivers of South America |
dc.creator.none.fl_str_mv |
Orfeo, Oscar |
author |
Orfeo, Oscar |
author_facet |
Orfeo, Oscar |
author_role |
author |
dc.subject.none.fl_str_mv |
Sediment Transport Subtropical Rivers Fluvial Sedimentology |
topic |
Sediment Transport Subtropical Rivers Fluvial Sedimentology |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Two rivers located in the subtropical Chaco</place /> plain are compared in order to analyse the sediment transport dynamics. Gauging and sediment samples were obtained during different hydrological stages. Grain size and textural parameters were obtained for the bed material. Concentration and transport of suspended sediment were also determined. In the Bermejito</placename /> River basin</placetype /></place />, the downstream increment of the discharge generates a predictive response in the sandy bed sediment. Discharge and suspended sediment load show a direct correlation. The Tapenagá</placename /> River</placetype /></place /> headwaters, composed mainly of fine sediments, are in extensive wetlands with deficient runoff. The sand content of the bed sediment increases constantly towards its confluence with the Parana River</place />, owing to the erosion of old sandy river deposits. Although the concentration of suspended sediment maintains an inverse correlation with discharge, the suspended load increases downstream. In the lower course of this river the aquatic vegetation plays an important role because plants colonize the fluvial system during lower water periods, producing abundant organic matter. At the beginning of the flood period, the deposited fine material is rapidly re-suspended, generating a sudden increase of the wash load concentration together with the discharge increment. During the flood, there is no deposition over the clay-rich bed in the highlands, while the bed becomes increasingly composed of sands in the lower course. Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina |
description |
Two rivers located in the subtropical Chaco</place /> plain are compared in order to analyse the sediment transport dynamics. Gauging and sediment samples were obtained during different hydrological stages. Grain size and textural parameters were obtained for the bed material. Concentration and transport of suspended sediment were also determined. In the Bermejito</placename /> River basin</placetype /></place />, the downstream increment of the discharge generates a predictive response in the sandy bed sediment. Discharge and suspended sediment load show a direct correlation. The Tapenagá</placename /> River</placetype /></place /> headwaters, composed mainly of fine sediments, are in extensive wetlands with deficient runoff. The sand content of the bed sediment increases constantly towards its confluence with the Parana River</place />, owing to the erosion of old sandy river deposits. Although the concentration of suspended sediment maintains an inverse correlation with discharge, the suspended load increases downstream. In the lower course of this river the aquatic vegetation plays an important role because plants colonize the fluvial system during lower water periods, producing abundant organic matter. At the beginning of the flood period, the deposited fine material is rapidly re-suspended, generating a sudden increase of the wash load concentration together with the discharge increment. During the flood, there is no deposition over the clay-rich bed in the highlands, while the bed becomes increasingly composed of sands in the lower course. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/73454 Orfeo, Oscar; Dynamics of sediment transport in two subtropical plain rivers of South America; Schweizerbart; Zeitschrift Fur Geomorphologie. Supplementband; 145; 12-2006; 229-241 0044-2798 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/73454 |
identifier_str_mv |
Orfeo, Oscar; Dynamics of sediment transport in two subtropical plain rivers of South America; Schweizerbart; Zeitschrift Fur Geomorphologie. Supplementband; 145; 12-2006; 229-241 0044-2798 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.schweizerbart.de/publications/detail/isbn/9783443211455/Zeitschr_f_Geomorphologie_Suppl_Bd_1 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Schweizerbart |
publisher.none.fl_str_mv |
Schweizerbart |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |