Downstream changes of particle entrainment in a hydropeaked river

Hydropeaking, through artificially generated flow peaks, affects hydro-sedimentary dynamics on rivers. The frequency and magnitude of such artificial flow pulses impact sedimentary process and, inevitably, affects bed-material entrainment. This study analyses the entrainment of particles in six sect...

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Autores: López Alonso, Raúl, Garcia, Celso, Vericat Querol, Damià, Batalla, Ramon J.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/85145
Acceso en línea:https://doi.org/10.1016/j.scitotenv.2020.140952
http://hdl.handle.net/10459.1/85145
Access Level:acceso abierto
Palabra clave:Gravel-bed river
Cabal dels rius
Sediments fluvials
Streamflow
River sediments
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spelling Downstream changes of particle entrainment in a hydropeaked riverLópez Alonso, RaúlGarcia, CelsoVericat Querol, DamiàBatalla, Ramon J.Gravel-bed riverCabal dels riusSediments fluvialsStreamflowRiver sedimentsHydropeaking, through artificially generated flow peaks, affects hydro-sedimentary dynamics on rivers. The frequency and magnitude of such artificial flow pulses impact sedimentary process and, inevitably, affects bed-material entrainment. This study analyses the entrainment of particles in six sections of a Pyrenean river under frequent hydropeaking. Three equations of particle entrainment with contrasting behaviours, validated for particle mobility from tracer data, have been used to predict the initiation of motion in each section. Results show that the peak discharge generated by the hydropower station mostly affects the section immediately downstream from the hydropower plant, where the finer fractions of the bed are mobilised. The mobile grain sizes include fine to medium gravels (< 20 mm). Channel geometry and higher slopes also have an effect on particle entrainment. Entrainment of the finer size fractions of the bed is termed partial transport, i.e. a partially size-selective transport that occurs downstream from the hydropower station and winnows the sand and small gravel further downstream.This research was undertaken under the MorphPeak (CGL2016-78874-R) project funded by the Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund Scheme (FEDER). The third author is a Serra Húnter Fellow at the University of Lleida. Authors acknowledge the support of the Catalan Government through the Fluvial Dynamics Research Group (RIUS, 2017-SGR 459645), along with the CERCA Programme.Elsevier2022202220202022info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/j.scitotenv.2020.140952http://hdl.handle.net/10459.1/85145http://hdl.handle.net/10459.1/85145reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésMINECO/PN/2013-2016/CGL2016-78874-RReproducció del document publicat a: https://doi.org/10.1016/j.scitotenv.2020.140952Science of the Total Environment, 2020, vol. 745, p. 140952cc-by-nc-nd (c) Elsevier, 2020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/4.0/oai:recercat.cat:10459.1/851452026-05-29T05:05:01Z
dc.title.none.fl_str_mv Downstream changes of particle entrainment in a hydropeaked river
title Downstream changes of particle entrainment in a hydropeaked river
spellingShingle Downstream changes of particle entrainment in a hydropeaked river
López Alonso, Raúl
Gravel-bed river
Cabal dels rius
Sediments fluvials
Streamflow
River sediments
title_short Downstream changes of particle entrainment in a hydropeaked river
title_full Downstream changes of particle entrainment in a hydropeaked river
title_fullStr Downstream changes of particle entrainment in a hydropeaked river
title_full_unstemmed Downstream changes of particle entrainment in a hydropeaked river
title_sort Downstream changes of particle entrainment in a hydropeaked river
dc.creator.none.fl_str_mv López Alonso, Raúl
Garcia, Celso
Vericat Querol, Damià
Batalla, Ramon J.
author López Alonso, Raúl
author_facet López Alonso, Raúl
Garcia, Celso
Vericat Querol, Damià
Batalla, Ramon J.
author_role author
author2 Garcia, Celso
Vericat Querol, Damià
Batalla, Ramon J.
author2_role author
author
author
dc.subject.none.fl_str_mv Gravel-bed river
Cabal dels rius
Sediments fluvials
Streamflow
River sediments
topic Gravel-bed river
Cabal dels rius
Sediments fluvials
Streamflow
River sediments
description Hydropeaking, through artificially generated flow peaks, affects hydro-sedimentary dynamics on rivers. The frequency and magnitude of such artificial flow pulses impact sedimentary process and, inevitably, affects bed-material entrainment. This study analyses the entrainment of particles in six sections of a Pyrenean river under frequent hydropeaking. Three equations of particle entrainment with contrasting behaviours, validated for particle mobility from tracer data, have been used to predict the initiation of motion in each section. Results show that the peak discharge generated by the hydropower station mostly affects the section immediately downstream from the hydropower plant, where the finer fractions of the bed are mobilised. The mobile grain sizes include fine to medium gravels (< 20 mm). Channel geometry and higher slopes also have an effect on particle entrainment. Entrainment of the finer size fractions of the bed is termed partial transport, i.e. a partially size-selective transport that occurs downstream from the hydropower station and winnows the sand and small gravel further downstream.
publishDate 2020
dc.date.none.fl_str_mv 2020
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.scitotenv.2020.140952
http://hdl.handle.net/10459.1/85145
http://hdl.handle.net/10459.1/85145
url https://doi.org/10.1016/j.scitotenv.2020.140952
http://hdl.handle.net/10459.1/85145
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv MINECO/PN/2013-2016/CGL2016-78874-R
Reproducció del document publicat a: https://doi.org/10.1016/j.scitotenv.2020.140952
Science of the Total Environment, 2020, vol. 745, p. 140952
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2020
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2020
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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