Parana River morphodynamics in the context of climate change

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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 Basin. The aim of this study is to provide a multi-disciplinary and multi-scale approach for the prediction of river future morphology in the con...

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Autores principales: Guerrero, M., Nones, M., Saurral, R., Montroull, N., Szupiany, R.N.
Formato: JOUR
Materias:
climate change impact
morphodynamics
Parana River
river morphology
sediment transport
climate change
climate modeling
fluvial geomorphology
hydrological modeling
meander
numerical model
streamflow
La Plata Basin
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15715124_v11_n4_p423_Guerrero
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_15715124_v11_n4_p423_Guerrero
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spelling todo:paper_15715124_v11_n4_p423_Guerrero2023-10-03T16:27:17Z Parana River morphodynamics in the context of climate change Guerrero, M. Nones, M. Saurral, R. Montroull, N. Szupiany, R.N. climate change impact morphodynamics Parana River river morphology sediment transport climate change climate modeling fluvial geomorphology hydrological modeling meander morphodynamics numerical model sediment transport streamflow La Plata Basin Parana River 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 Basin. The aim of this study is to provide a multi-disciplinary and multi-scale approach for the prediction of river future morphology in the context of climate change, the intended use of which is the prognosis of river morphodynamics' long-term impact on manmade structures and activities over or near the river. The study is based on three levels of mathematical modelling, with the output of wider-scale models providing the input conditions for more specific ones. Climate models give the input ensemble, i.e. future precipitation and temperature over La Plata Basin. The semi-distributed macroscale variable infiltration capacity hydrological model simulates the flow discharge time series that are applied to an own-developed 1D morphodynamic model. The 1D model simulates future rate of sediment transport and corresponding bed-level changes at watershed scale and provides the boundary conditions for a 2D model. Therefore, streamflow divagations at channel scale are simulated by means of the MIKE21C code developed by the Danish Hydraulic Institute. The analysis indicates a rather low sensitivity of the Parana River bed profile, i.e. 1D morphology, to the increase predicted in flow discharge, whereas the streamflow appreciably divagates. In particular, surpassing an upper bound in the most frequent discharge appears effective in driving the actual bifurcated morphology into a meandering-multithread configuration. © 2013 © 2013 International Association for Hydro-Environment Engineering and Research. Fil:Saurral, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Montroull, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15715124_v11_n4_p423_Guerrero
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic climate change impact
morphodynamics
Parana River
river morphology
sediment transport
climate change
climate modeling
fluvial geomorphology
hydrological modeling
meander
morphodynamics
numerical model
sediment transport
streamflow
La Plata Basin
Parana River
spellingShingle climate change impact
morphodynamics
Parana River
river morphology
sediment transport
climate change
climate modeling
fluvial geomorphology
hydrological modeling
meander
morphodynamics
numerical model
sediment transport
streamflow
La Plata Basin
Parana River
Guerrero, M.
Nones, M.
Saurral, R.
Montroull, N.
Szupiany, R.N.
Parana River morphodynamics in the context of climate change
topic_facet climate change impact
morphodynamics
Parana River
river morphology
sediment transport
climate change
climate modeling
fluvial geomorphology
hydrological modeling
meander
morphodynamics
numerical model
sediment transport
streamflow
La Plata Basin
Parana River
description 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 Basin. The aim of this study is to provide a multi-disciplinary and multi-scale approach for the prediction of river future morphology in the context of climate change, the intended use of which is the prognosis of river morphodynamics' long-term impact on manmade structures and activities over or near the river. The study is based on three levels of mathematical modelling, with the output of wider-scale models providing the input conditions for more specific ones. Climate models give the input ensemble, i.e. future precipitation and temperature over La Plata Basin. The semi-distributed macroscale variable infiltration capacity hydrological model simulates the flow discharge time series that are applied to an own-developed 1D morphodynamic model. The 1D model simulates future rate of sediment transport and corresponding bed-level changes at watershed scale and provides the boundary conditions for a 2D model. Therefore, streamflow divagations at channel scale are simulated by means of the MIKE21C code developed by the Danish Hydraulic Institute. The analysis indicates a rather low sensitivity of the Parana River bed profile, i.e. 1D morphology, to the increase predicted in flow discharge, whereas the streamflow appreciably divagates. In particular, surpassing an upper bound in the most frequent discharge appears effective in driving the actual bifurcated morphology into a meandering-multithread configuration. © 2013 © 2013 International Association for Hydro-Environment Engineering and Research.
format JOUR
author Guerrero, M.
Nones, M.
Saurral, R.
Montroull, N.
Szupiany, R.N.
author_facet Guerrero, M.
Nones, M.
Saurral, R.
Montroull, N.
Szupiany, R.N.
author_sort Guerrero, M.
title Parana River morphodynamics in the context of climate change
title_short Parana River morphodynamics in the context of climate change
title_full Parana River morphodynamics in the context of climate change
title_fullStr Parana River morphodynamics in the context of climate change
title_full_unstemmed Parana River morphodynamics in the context of climate change
title_sort parana river morphodynamics in the context of climate change
url http://hdl.handle.net/20.500.12110/paper_15715124_v11_n4_p423_Guerrero
work_keys_str_mv AT guerrerom paranarivermorphodynamicsinthecontextofclimatechange
AT nonesm paranarivermorphodynamicsinthecontextofclimatechange
AT saurralr paranarivermorphodynamicsinthecontextofclimatechange
AT montroulln paranarivermorphodynamicsinthecontextofclimatechange
AT szupianyrn paranarivermorphodynamicsinthecontextofclimatechange
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