Suspended sediment transport in a highly erodible catchment: The River Isabena (Southern Pyrenees)

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dc.contributor.author López-Tarazón, J. A.
dc.contributor.author Batalla, Ramon J.
dc.contributor.author Vericat, Damià
dc.contributor.author Francke, T.
dc.date.accessioned 2011-06-27T09:18:27Z
dc.date.available 2011-06-27T09:18:27Z
dc.date.issued 2009-08-15
dc.identifier.citation López-Tarazón , J A , Batalla , R J , Vericat , D & Francke , T 2009 , ' Suspended sediment transport in a highly erodible catchment: The River Isabena (Southern Pyrenees) ' Geomorphology , vol 109 , no. 3-4 , pp. 210-221 . , 10.1016/j.geomorph.2009.03.003 en
dc.identifier.issn 0169-555X
dc.identifier.other PURE: 168212
dc.identifier.other dspace: 2160/7101
dc.identifier.uri http://hdl.handle.net/2160/7101
dc.description Lopez-Tarazon, J. A., Batalla, R. J., Vericat, D., Francke, T. (2009). Suspended sediment transport in a highly erodible catchment: The River Isabena (Southern Pyrenees). 109 (3-4), 210-221. en
dc.description.abstract 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 Isabena (445 km(2), 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. (C) 2009 Elsevier B.V. All rights reserved. en
dc.language.iso eng
dc.relation.ispartof Geomorphology en
dc.subject suspended sediment transport en
dc.subject Specific yield en
dc.subject reservoir sedimentation en
dc.subject interpolation en
dc.subject hysteresis en
dc.subject river Isábena en
dc.title Suspended sediment transport in a highly erodible catchment: The River Isabena (Southern Pyrenees) en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.geomorph.2009.03.003
dc.contributor.institution Centre for Catchment and Coastal Research en
dc.description.status Peer reviewed en


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