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dc.contributor.author
Parsons, Daniel R.  
dc.contributor.author
Best, James L.  
dc.contributor.author
Lane, Stuart N.  
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Orfeo, Oscar  
dc.contributor.author
Hardy, Richard J.  
dc.contributor.author
Kostaschuck, Ray  
dc.date.available
2018-04-23T20:37:09Z  
dc.date.issued
2007-01  
dc.identifier.citation
Parsons, Daniel R.; Best, James L.; Lane, Stuart N.; Orfeo, Oscar; Hardy, Richard J.; et al.; Form roughness and the absence of secondary flow in a large confluence-diffluence, Rio Paraná, Argentina; John Wiley & Sons Ltd; Earth Surface Processes And Landforms; 32; 1; 1-2007; 155-162  
dc.identifier.issn
0197-9337  
dc.identifier.uri
http://hdl.handle.net/11336/43143  
dc.description.abstract
Confluence–diffluence units are key elements within many river networks, having a major impact upon the routing of flow and sediment, and hence upon channel change. Although much progress has been made in understanding river confluences, and increasing attention is being paid to bifurcations and the important role of bifurcation asymmetry, most studies have been conducted in laboratory flumes or within small rivers with width:depth (aspect) ratios less than 50. This paper presents results of a field‐based study that details the bed morphology and 3D flow structure within a very large confluence–diffluence in the Río Paraná, Argentina, with a width:depth ratio of approximately 200. Flow within the confluence–diffluence is dominated largely by the bed roughness, in the form of sand dunes; coherent, channel‐scale, secondary flow cells, that have been identified as important aspects of the flow field within smaller channels, and assumed to be present within large rivers, are generally absent in this reach. This finding has profound implications for flow mixing rates, sediment transport rates and pathways, and thus the interpretation of confluence–diffluence morphology and sedimentology.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
John Wiley & Sons Ltd  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Form Roughness  
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Secondary Flow  
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Confluences  
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Difluences  
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Large Rivers  
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Parana River  
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Meteorología y Ciencias Atmosféricas  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Form roughness and the absence of secondary flow in a large confluence-diffluence, Rio Paraná, Argentina  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-04-16T13:45:47Z  
dc.identifier.eissn
1096-9837  
dc.journal.volume
32  
dc.journal.number
1  
dc.journal.pagination
155-162  
dc.journal.pais
Reino Unido  
dc.description.fil
Fil: Parsons, Daniel R.. University of Leeds; Reino Unido  
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Fil: Best, James L.. University of Leeds; Reino Unido  
dc.description.fil
Fil: Lane, Stuart N.. University Of Durham; Reino Unido  
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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  
dc.description.fil
Fil: Hardy, Richard J.. University Of Durham; Reino Unido  
dc.description.fil
Fil: Kostaschuck, Ray. University of Guelph; Canadá  
dc.journal.title
Earth Surface Processes And Landforms  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/esp.1457  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/esp.1457