Morfología y Corrientes Secundarias en una Confluencia con Cauces Discordantes, Río Paraná, Argentina

Translated title of the contribution: Morphology and secondary currents in a confluence with discordant channels, Parana River, Argentina

R. N. Szupiany, D. R. Parsons, J. L. Best, M. L. Amsler, O. Orfeo

Research output: Contribution to conferencePaperpeer-review

Abstract

Braided rivers are characterized by a large number of bars and islands confluences, constrictions and bifurcations of the flow (the so-called “nodes”) where occur a complex diversity of coherent flow structures interacting each other with the river bed and the sediment transport. Most reported studies focus mainly in analyzing the flow nature and morphology at channel confluences particularly in small streams, laboratory channels and though numerical simulations with limited depths and widths. Few studies and descriptions of coherent flow structures and bed morphology at large scale currents exist, essentially, due to a lack of proper instrumentations. This paper presents results describing the flow structure, bed form variations and morphologic features along at a bar-confluence of the Parana River, Argentina, the sixth largest river in the world due to its mean discharge. A reach (3 km long) was surveyed with a Multi-beam Eco-Sounder ResonTM SeaBat1 8101 (MBES), providing a high resolution 3-D detailed picture of the river bed. The 3-D flow structure was obtained with an acoustic Doppler profiler (aDp) at 3 cross sections located along the confluence by means of a methodology specifically designed to obtain accurate velocity components with moving-vessel measurement.

Translated title of the contributionMorphology and secondary currents in a confluence with discordant channels, Parana River, Argentina
Original languageSpanish
StatePublished - Jan 1 2006
Externally publishedYes
EventInternational Symposium on Hydraulic Structures - XXII Congreso Latinoamericano de Hidraulica - 22nd Latin American Congress on Hydraulics 2006 - Ciudad Guayana, Venezuela, Bolivarian Republic of
Duration: Oct 9 2006Oct 14 2006

Conference

ConferenceInternational Symposium on Hydraulic Structures - XXII Congreso Latinoamericano de Hidraulica - 22nd Latin American Congress on Hydraulics 2006
CountryVenezuela, Bolivarian Republic of
CityCiudad Guayana
Period10/9/0610/14/06

ASJC Scopus subject areas

  • Mechanical Engineering

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