Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)

Understanding and quantifying sediment load is important in catchments draining highly erodible materials that eventually contribute to siltation of downstream reservoirs. Within this context, the suspended sediment transport and its temporal dynamics have been studied in the River Isábena (445 km2,...

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Autores: López Tarazón, José Andrés, Batalla, Ramon J., Vericat Querol, Damià, Francke, T.
Tipo de recurso: artículo
Fecha de publicación:2009
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:10459.1/469339
Acceso en línea:https://doi.org/10.1016/j.geomorph.2009.03.003
https://hdl.handle.net/10459.1/469339
http://hdl.handle.net/10459.1/469339
Access Level:acceso abierto
Palabra clave:Suspended sediment transport
Specific yield
Reservoir sedimentation
Interpolation
Hysteresis
River Isábena
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spelling Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)López Tarazón, José AndrésBatalla, Ramon J.Vericat Querol, DamiàFrancke, T.Suspended sediment transportSpecific yieldReservoir sedimentationInterpolationHysteresisRiver IsábenaUnderstanding and quantifying sediment load is important in catchments draining highly erodible materials that eventually contribute to siltation of downstream reservoirs. Within this context, the suspended sediment transport and its temporal dynamics have been studied in the River Isábena (445 km2, south-central Pyrenees, Ebro basin) by means of direct sampling and turbidity recording during a 3-year dry period. The average flood-suspended sediment concentration was 8 g l− 1, with maximum instantaneous values above 350 g l− 1. The high scatter between discharge and suspended sediment concentrations (up to five orders of magnitude) has not permitted the use of rating curve methods to estimate the total load. Interpolation techniques yielded a mean annual sediment load of 184,253 t y− 1 for the study period, with a specific yield of 414 t km− 2 y− 1. This value resembles those reported for small torrents in nearby mountainous environments and is the result of the high connectivity between the badland source areas and stream courses, a fact that maximises sediment conveyance through the catchment. Floods dominated the sediment transport and yield. However, sediment transport was more constant through time than that observed in Mediterranean counterparts; this can be attributed to the role of base flows that entrain fine sediment temporarily stored in the channel and force the river to carry high sediment concentrations (i.e., generally in the order of 0.5 g l− 1), even under minimum flow conditions.The first author has a grant funded by the Catalan Government and the European Social Fund. Research has been carried out within the framework of the project “Sediment Export from Large Semi-Arid Catchments: Measurements and Modelling” (SESAM), funded by the Deutsche Forschungsgemeinschaft (DGF). The authors wish to thank the Ebro Water Authorities for their permission to install the equipment at the Capella gauging station and for providing hydrological data. Authors are indebted to Chris Gibbins who undertook a helpful revision of the paper and the two anonymous referees whose comments greatly improved the manuscript.Elsevier2009info:eu-repo/semantics/articlehttps://doi.org/10.1016/j.geomorph.2009.03.003https://hdl.handle.net/10459.1/469339http://hdl.handle.net/10459.1/469339reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.geomorph.2009.03.003Geomorphology, 2009, vol. 109, núm. 3–4, p. 210-221(c) Elsevier, 2009info:eu-repo/semantics/openAccessoai:recercat.cat:10459.1/4693392026-05-29T05:05:01Z
dc.title.none.fl_str_mv Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
title Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
spellingShingle Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
López Tarazón, José Andrés
Suspended sediment transport
Specific yield
Reservoir sedimentation
Interpolation
Hysteresis
River Isábena
title_short Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
title_full Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
title_fullStr Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
title_full_unstemmed Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
title_sort Suspended sediment transport in a highly erodible catchment: the River Isábena (Southern Pyrenees)
dc.creator.none.fl_str_mv López Tarazón, José Andrés
Batalla, Ramon J.
Vericat Querol, Damià
Francke, T.
author López Tarazón, José Andrés
author_facet López Tarazón, José Andrés
Batalla, Ramon J.
Vericat Querol, Damià
Francke, T.
author_role author
author2 Batalla, Ramon J.
Vericat Querol, Damià
Francke, T.
author2_role author
author
author
dc.subject.none.fl_str_mv Suspended sediment transport
Specific yield
Reservoir sedimentation
Interpolation
Hysteresis
River Isábena
topic Suspended sediment transport
Specific yield
Reservoir sedimentation
Interpolation
Hysteresis
River Isábena
description Understanding and quantifying sediment load is important in catchments draining highly erodible materials that eventually contribute to siltation of downstream reservoirs. Within this context, the suspended sediment transport and its temporal dynamics have been studied in the River Isábena (445 km2, south-central Pyrenees, Ebro basin) by means of direct sampling and turbidity recording during a 3-year dry period. The average flood-suspended sediment concentration was 8 g l− 1, with maximum instantaneous values above 350 g l− 1. The high scatter between discharge and suspended sediment concentrations (up to five orders of magnitude) has not permitted the use of rating curve methods to estimate the total load. Interpolation techniques yielded a mean annual sediment load of 184,253 t y− 1 for the study period, with a specific yield of 414 t km− 2 y− 1. This value resembles those reported for small torrents in nearby mountainous environments and is the result of the high connectivity between the badland source areas and stream courses, a fact that maximises sediment conveyance through the catchment. Floods dominated the sediment transport and yield. However, sediment transport was more constant through time than that observed in Mediterranean counterparts; this can be attributed to the role of base flows that entrain fine sediment temporarily stored in the channel and force the river to carry high sediment concentrations (i.e., generally in the order of 0.5 g l− 1), even under minimum flow conditions.
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.geomorph.2009.03.003
https://hdl.handle.net/10459.1/469339
http://hdl.handle.net/10459.1/469339
url https://doi.org/10.1016/j.geomorph.2009.03.003
https://hdl.handle.net/10459.1/469339
http://hdl.handle.net/10459.1/469339
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.geomorph.2009.03.003
Geomorphology, 2009, vol. 109, núm. 3–4, p. 210-221
dc.rights.none.fl_str_mv (c) Elsevier, 2009
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier, 2009
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: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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score 15.811543

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