Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration

Detailed information on nearshore sediment transport processes during onshore bar migration were obtained from large-scale laboratory experiments with bichromatic wave groups on a relatively steep initial beach slope (1:15). Detailed measurements of velocity and sand concentration near the bed from...

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Autores: Grossmann, Florian|||0000-0002-1037-2372, Hurther, David, Van der Zanden, Joep, Sánchez-Arcilla Conejo, Agustín|||0000-0002-3450-6697, Alsina Torrent, José María|||0000-0002-3055-5379
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/386262
Acceso en línea:https://hdl.handle.net/2117/386262
https://dx.doi.org/10.1029/2022JC018998
Access Level:acceso abierto
Palabra clave:Coastal sediments -- Transport
Nearshore processes
Sediment transport
Bar migration
ACVP
Wave flume experiments
Bichromatic waves
Sediments marins -- Transport
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes
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repository_id_str
spelling Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migrationGrossmann, Florian|||0000-0002-1037-2372Hurther, DavidVan der Zanden, JoepSánchez-Arcilla Conejo, Agustín|||0000-0002-3450-6697Alsina Torrent, José María|||0000-0002-3055-5379Coastal sediments -- TransportNearshore processesSediment transportBar migrationACVPWave flume experimentsBichromatic wavesSediments marins -- TransportÀrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costesDetailed information on nearshore sediment transport processes during onshore bar migration were obtained from large-scale laboratory experiments with bichromatic wave groups on a relatively steep initial beach slope (1:15). Detailed measurements of velocity and sand concentration near the bed from shoaling up to the outer breaking zone including suspended sediment and sheet flow transport are presented. The analysis focuses on onshore migration under an accretive wave condition but comparison to an erosive condition highlights important differences. Decomposition shows that total transport mainly results from a balance of short wave-related, bedload onshore transport and current-related, suspended offshore transport. When comparing the accretive to the more energetic erosive condition, the balance shifts toward onshore transport, and onshore migration, because the short wave-related transport does not decrease as much as the current-related transport. This is related to the effects of skewness and asymmetry combined with less sediment suspension in the water column and undertow magnitude under the accretive condition. Transports from streaming in the wave boundary layer and from infragravity waves become visible but only play a subordinate role. Identified priorities for numerical model development include parametrization of wave nonlinearity effects and better description of wave breaking and its influences on sediment suspension.We thank Dr. Troels Aagaard and another, anonymous reviewer for their valuable comments which helped to improve the manuscript. The experiments described in this work were funded by the European Community's Horizon 2020 Programme through the grant to the budget of the Integrated Infrastructure Initiative HYDRALAB+, Contract 654110, and were conducted as part of the transnational access project RESIST. FG acknowledges funding from the Agency for Management of University and Research Grants (AGAUR). DH acknowledges funding from the French DGA funded ANR ASTRID Maturation project MESURE (ANR-16-ASMA-0005-01). JA acknowledges funding from the Serra Húnter Programme (SHP). We wish to thank fellow RESIST researchers and the CIEM staff (Joaquim Sospedra, Oscar Galego, Dr. Andrea Marzeddu, and Dr. Iván Cáceres) for their contributions to the experiments.Peer ReviewedWiley20232023-03-0120232023-04-14journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/386262https://dx.doi.org/10.1029/2022JC018998reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 654110 HYDRALAB+ Adapting to climate changeopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3862622026-05-27T15:37:01Z
dc.title.none.fl_str_mv Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
title Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
spellingShingle Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
Grossmann, Florian|||0000-0002-1037-2372
Coastal sediments -- Transport
Nearshore processes
Sediment transport
Bar migration
ACVP
Wave flume experiments
Bichromatic waves
Sediments marins -- Transport
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes
title_short Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
title_full Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
title_fullStr Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
title_full_unstemmed Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
title_sort Near-bed sediment transport processes during onshore bar migration in large-scale experiments: comparison with offshore bar migration
dc.creator.none.fl_str_mv Grossmann, Florian|||0000-0002-1037-2372
Hurther, David
Van der Zanden, Joep
Sánchez-Arcilla Conejo, Agustín|||0000-0002-3450-6697
Alsina Torrent, José María|||0000-0002-3055-5379
author Grossmann, Florian|||0000-0002-1037-2372
author_facet Grossmann, Florian|||0000-0002-1037-2372
Hurther, David
Van der Zanden, Joep
Sánchez-Arcilla Conejo, Agustín|||0000-0002-3450-6697
Alsina Torrent, José María|||0000-0002-3055-5379
author_role author
author2 Hurther, David
Van der Zanden, Joep
Sánchez-Arcilla Conejo, Agustín|||0000-0002-3450-6697
Alsina Torrent, José María|||0000-0002-3055-5379
author2_role author
author
author
author
dc.subject.none.fl_str_mv Coastal sediments -- Transport
Nearshore processes
Sediment transport
Bar migration
ACVP
Wave flume experiments
Bichromatic waves
Sediments marins -- Transport
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes
topic Coastal sediments -- Transport
Nearshore processes
Sediment transport
Bar migration
ACVP
Wave flume experiments
Bichromatic waves
Sediments marins -- Transport
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes
description Detailed information on nearshore sediment transport processes during onshore bar migration were obtained from large-scale laboratory experiments with bichromatic wave groups on a relatively steep initial beach slope (1:15). Detailed measurements of velocity and sand concentration near the bed from shoaling up to the outer breaking zone including suspended sediment and sheet flow transport are presented. The analysis focuses on onshore migration under an accretive wave condition but comparison to an erosive condition highlights important differences. Decomposition shows that total transport mainly results from a balance of short wave-related, bedload onshore transport and current-related, suspended offshore transport. When comparing the accretive to the more energetic erosive condition, the balance shifts toward onshore transport, and onshore migration, because the short wave-related transport does not decrease as much as the current-related transport. This is related to the effects of skewness and asymmetry combined with less sediment suspension in the water column and undertow magnitude under the accretive condition. Transports from streaming in the wave boundary layer and from infragravity waves become visible but only play a subordinate role. Identified priorities for numerical model development include parametrization of wave nonlinearity effects and better description of wave breaking and its influences on sediment suspension.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-03-01
2023
2023-04-14
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/386262
https://dx.doi.org/10.1029/2022JC018998
url https://hdl.handle.net/2117/386262
https://dx.doi.org/10.1029/2022JC018998
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 654110 HYDRALAB+ Adapting to climate change
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://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 Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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