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(Article of periodic en Anglais - 2013)

Document title

Uncertainty in the evaluation of sediment yield from badland areas : Suspended sediment transport estimated in the Araguás catchment (central Spanish Pyrenees)

published at : Updating badlands research

Authors(s) and Affiliation(s)

REGÜÉS D. (1) ; NADAL-ROMERO E. (2) ;
(1) Pyrenean Inst. of Ecology (CSIC), Zaragoza, ESPAGNE
(2) Dept. of Geography, Univ., Zaragoza, ESPAGNE

Abstract

Suspended sediment transport is probably the main process in sediment export from badland areas. In the Araguás catchment (central Pyrenees) there is a statistically significant positive linear relationship between maximum discharge and the maximum suspended sediment concentration (SSC). In a study involving sampling during 2 moderate floods (August 2006 and February 2007) in the Araguás catchment it was observed that the mean suspended sediment particle size was significantly greater during the highest SSC conditions. The results showed the great heterogeneity of particle sizes that can affect suspended sediment transport, which is usually estimated from concentration determined from turbidity values obtained using infrared devices and associated with the corresponding discharge value. It is highlighted that the evaluation of sediment yield from badland areas using turbidity values involves significant uncertainty, and quantitative estimates of the errors involved are provided

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 106 [pp. 93-100]

Bibliographic references : 1 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.05.006

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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