Do badlands (always) control sediment yield? Evidence from a small intermittent catchment

The objective of this paper is to analyse the production and the yield of fine sediment in a small mountain catchment (10 km2), characterised by patches of badlands (25% of the catchment area) and drained by intermittent streams. The study area is located in the Southern Central Pyrenees. The study...

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Autores: Llena Hernando, Manel, Batalla, Ramon J., Smith, Mark William, Vericat Querol, Damià
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/84195
Acceso en línea:https://doi.org/10.1016/j.catena.2020.105015
http://hdl.handle.net/10459.1/84195
Access Level:acceso abierto
Palabra clave:Sediment sources
Flashiness
Sediment delivery ratio
Flow intermittency
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spelling Do badlands (always) control sediment yield? Evidence from a small intermittent catchmentLlena Hernando, ManelBatalla, Ramon J.Smith, Mark WilliamVericat Querol, DamiàSediment sourcesFlashinessSediment delivery ratioFlow intermittencyThe objective of this paper is to analyse the production and the yield of fine sediment in a small mountain catchment (10 km2), characterised by patches of badlands (25% of the catchment area) and drained by intermittent streams. The study area is located in the Southern Central Pyrenees. The study is performed at multiple temporal scales to further highlight: (i) the effect of pulses in the transfer of water and fine sediment; (ii) the contribution of the sediment production from badlands to the sediment yield of the catchment; and (iii) the role of the drainage network as fine sediment source and sink. Significant correlations between meteorological and flow variables were found; specifically, the strongest positive relations were observed between stream flashiness, the duration of the period in which the stream is dry and the suspended sediment concentration. Results indicated that badlands do not always control the export of sediments. At the annual scale badlands supply around 40% of the total catchment sediment yield. Seasonally sediment produced in badlands can be higher than the amount exported at the catchment outlet, suggesting the channel network acts as a sink. In terms of sediment production, badlands represent around of 53% of the total production taking also into account agricultural fields and forest areas. Results emphasise the key role of the channel network on controlling pulses of sediment transfer, in direct relation to the intermittent character of the streams. The frequency and magnitude of such pulses determines the catchment Sediment Delivery Ratio (SDR), depending on whether the drainage network acts as a sediment sink or source.This research was carried out within the framework of two research projects funded by the Spanish Ministry of Economy and Competitiveness and the European FEDER funds: MORPHSED (CGL2012-36394) and MORPHPEAK (CGL2016-78874-R). The first author had a grant funded by the Spanish Ministry of Education Culture and Sports (FPU016/ 01687). The fourth author is a Serra Húnter Fellow at the University of Lleida. The first, second and the fourth authors are part of the Fluvial Dynamics Research Group-RIUS, which is a Consolidated Group recognized by the Generalitat de Catalunya (2017 SGR 459645). We also acknowledge the support of the CERCA Program of the Generalitat de Catalunya. Finally, we also thank the British Society for Geomorphology to support the long-term geomorphological monitoring program in the experimental badland that started in 2013; and the members of the Fluvial Dynamics Research Group for their assistance during the fieldwork campaigns.Elsevier2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttps://doi.org/10.1016/j.catena.2020.105015http://hdl.handle.net/10459.1/84195reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/MINECO//CGL2012-36394info:eu-repo/grantAgreement/MINECO//CGL2016-78874-RReproducció del document publicat a https://doi.org/10.1016/j.catena.2020.105015Catena, 2021, vol. 198, p. 105015cc-by-nc-nd (c) Elsevier, 2020info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/841952026-06-24T12:42:17Z
dc.title.none.fl_str_mv Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
title Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
spellingShingle Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
Llena Hernando, Manel
Sediment sources
Flashiness
Sediment delivery ratio
Flow intermittency
title_short Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
title_full Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
title_fullStr Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
title_full_unstemmed Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
title_sort Do badlands (always) control sediment yield? Evidence from a small intermittent catchment
dc.creator.none.fl_str_mv Llena Hernando, Manel
Batalla, Ramon J.
Smith, Mark William
Vericat Querol, Damià
author Llena Hernando, Manel
author_facet Llena Hernando, Manel
Batalla, Ramon J.
Smith, Mark William
Vericat Querol, Damià
author_role author
author2 Batalla, Ramon J.
Smith, Mark William
Vericat Querol, Damià
author2_role author
author
author
dc.subject.none.fl_str_mv Sediment sources
Flashiness
Sediment delivery ratio
Flow intermittency
topic Sediment sources
Flashiness
Sediment delivery ratio
Flow intermittency
description The objective of this paper is to analyse the production and the yield of fine sediment in a small mountain catchment (10 km2), characterised by patches of badlands (25% of the catchment area) and drained by intermittent streams. The study area is located in the Southern Central Pyrenees. The study is performed at multiple temporal scales to further highlight: (i) the effect of pulses in the transfer of water and fine sediment; (ii) the contribution of the sediment production from badlands to the sediment yield of the catchment; and (iii) the role of the drainage network as fine sediment source and sink. Significant correlations between meteorological and flow variables were found; specifically, the strongest positive relations were observed between stream flashiness, the duration of the period in which the stream is dry and the suspended sediment concentration. Results indicated that badlands do not always control the export of sediments. At the annual scale badlands supply around 40% of the total catchment sediment yield. Seasonally sediment produced in badlands can be higher than the amount exported at the catchment outlet, suggesting the channel network acts as a sink. In terms of sediment production, badlands represent around of 53% of the total production taking also into account agricultural fields and forest areas. Results emphasise the key role of the channel network on controlling pulses of sediment transfer, in direct relation to the intermittent character of the streams. The frequency and magnitude of such pulses determines the catchment Sediment Delivery Ratio (SDR), depending on whether the drainage network acts as a sediment sink or source.
publishDate 2021
dc.date.none.fl_str_mv 2021
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.catena.2020.105015
http://hdl.handle.net/10459.1/84195
url https://doi.org/10.1016/j.catena.2020.105015
http://hdl.handle.net/10459.1/84195
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO//CGL2012-36394
info:eu-repo/grantAgreement/MINECO//CGL2016-78874-R
Reproducció del document publicat a https://doi.org/10.1016/j.catena.2020.105015
Catena, 2021, vol. 198, p. 105015
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2020
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2020
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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