Search Results - "Szupiany, Ricardo"
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Dunes in the world’s big rivers are characterized by low-angle lee-side slopes and a complex shape
Published in Nature geoscience (01-02-2020)“…Dunes form critical agents of bedload transport in all of the world’s big rivers, and constitute appreciable sources of bed roughness and flow resistance…”
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Large meandering bends with high width-to-depth ratios: Insights from hydro-sedimentological processes
Published in Geomorphology (Amsterdam, Netherlands) (01-02-2021)“…Morphodynamics and hydro-sedimentological processes in meandering rivers are one of the most complex phenomena observed in alluvial channels. Because of the…”
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Multi-frequency acoustics for suspended sediment studies: an application in the Parana River
Published in Journal of hydraulic research (01-12-2013)“…A method of using two acoustic Doppler current profilers operating at different frequencies and employed at the same measuring vertical to sample a profile of…”
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River Organic Carbon Fluxes Modulated by Hydrodynamic Sorting of Particulate Organic Matter
Published in Geophysical research letters (16-02-2022)“…Rivers regulate the global carbon cycle by transferring particulate organic carbon (POC) from terrestrial landscapes to marine sedimentary basins, but the…”
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5
Estimating sand concentrations using ADCP‐based acoustic inversion in a large fluvial system characterized by bi‐modal suspended‐sediment distributions
Published in Earth surface processes and landforms (01-05-2019)“…Quantifying sediment flux within rivers is a challenge for many disciplines due, mainly, to difficulties inherent to traditional sediment sampling methods…”
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Morphology, flow structure, and suspended bed sediment transport at two large braid-bar confluences
Published in Water resources research (01-05-2009)“…Mid-channel bars and their associated confluences are key morphodynamic nodes within braided rivers, with past studies having investigated the morphodynamics…”
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Fluvial Organic Carbon Composition Regulated by Seasonal Variability in Lowland River Migration and Water Discharge
Published in Geophysical research letters (28-12-2021)“…Identifying drivers of seasonal variations in fluvial particulate organic carbon (POC) composition can aid sediment provenance and biogeochemical cycling…”
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A sediment fluxes investigation for the 2-D modelling of large river morphodynamics
Published in Advances in water resources (01-07-2015)“…•We investigated sediment fluxes in a bifurcation of the large Parana River.•A 2-D numerical un-coupled model was applied to the bifurcation reach.•Numerical…”
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Estimation of Concentration and Load of Suspended Bed Sediment in a Large River by Means of Acoustic Doppler Technology
Published in Journal of hydraulic engineering (New York, N.Y.) (01-07-2014)“…AbstractThe standard experimental methods used for sampling suspended loads in large rivers are usually time consuming, unsafe, rather expensive, and have a…”
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10
The role of dunes in flow resistance in a large and a small river. The case of the Paraná and Tercero rivers, Argentina
Published in Journal of hydraulic research (04-05-2022)“…The dynamics of sandy rivers is a complex phenomenon linking the interactions between dunes, flow and sediment transport. Despite an existing large amount of…”
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11
The Acoustic Properties of Suspended Sediment in Large Rivers: Consequences on ADCP Methods Applicability
Published in Water (Basel) (01-01-2016)“…The use of echo-levels from Acoustic Doppler Current Profiler (ADCP) recordings has become more and more common for estimating suspended bed-material and wash…”
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12
The ADCP's bottom track capability for bedload prediction: Evidence on method reliability from sandy river applications
Published in Flow measurement and instrumentation (01-04-2017)“…River processes understanding requires the investigation of sediment transported by the streamflow. To this aim, the use of physical samplers is particularly…”
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13
Meander Statistics Toolbox (MStaT): A toolbox for geometry characterization of bends in large meandering channels
Published in SoftwareX (01-06-2021)“…This contribution presents MStaT, a wavelet-based open-source software developed to provide a detailed characterization of large meandering river…”
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14
Hydro‐geomorphological and sedimentological processes along the major fluvial‐lacustrine delta of the Paraná River (Argentina): Their role in floodplain construction
Published in Earth surface processes and landforms (30-06-2023)“…River‐dominated sea deltas have been thoroughly studied by different authors. In these environments the interrelationships of the hydro‐sedimentological…”
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15
Scales and causes of heterogeneity in bars in a large multi-channel river: Río Paraná, Argentina
Published in Sedimentology (01-06-2014)“…To date, published studies of alluvial bar architecture in large rivers have been restricted mostly to case studies of individual bars and single locations…”
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16
Comparison of Fixed- and Moving-Vessel Flow Measurements with an aDp in a Large River
Published in Journal of hydraulic engineering (New York, N.Y.) (01-12-2007)“…A comparison of three-dimensional flow velocity measurements, made with an acoustic Doppler profiler (aDp) from fixed and moving vessels at cross sections of…”
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17
Flow structure at a confluence: experimental data and the bluff body analogy
Published in Journal of hydraulic research (03-05-2016)“…An experimental characterization of the hydrodynamics of a mixing interface at an open channel confluence is presented. In the laboratory experiments, both a…”
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The influence of tributary flow density differences on the hydrodynamic behavior of a confluent meander bend and implications for flow mixing
Published in Geomorphology (Amsterdam, Netherlands) (01-03-2018)“…The goal of this study is to evaluate the influence of tributary flow density differences on hydrodynamics and mixing at a confluent meander bend. A detailed…”
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19
Parana River morphodynamics in the context of climate change
Published in International journal of river basin management (01-12-2013)“…This paper presents an analysis of the sediment dynamics that takes place at different scales within the Middle and the Lower Parana River in the La Plata…”
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Modelling hydrodynamics in the Rio Paraná, Argentina: An evaluation and inter-comparison of reduced-complexity and physics based models applied to a large sand-bed river
Published in Geomorphology (Amsterdam, Netherlands) (01-10-2012)“…Depth-averaged velocities and unit discharges within a 30km reach of one of the world's largest rivers, the Rio Paraná, Argentina, were simulated using three…”
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