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(Article of periodic en Anglais - 2012)

Document title

A new approach for linking event-based upland sediment sources to downstream suspended sediment transport

Authors(s) and Affiliation(s)

GAO P. (1) ; PUCKETT J. (1) ;
(1) Dep. of Geography, Univ., NY, Syracuse, ETATS-UNIS

Abstract

This approach is based on a new concept of spatial scale, sub-watershed area (SWA), defined as a sub-watershed within which all eroded soils are transported out without deposition during a hydrological event. Using (rainfall) event data collected between July and November, 2007 from several SWAs of the studied watershed, the AA. developed an empirical equation that has one independent variable, mean SWA slope. This equation was then used to determine event-averaged unit soil erosion rate for all SWAs in the studied watershed and calculate event-averaged gross erosion Eea. Next, they developed 2 linear sediment rating curves (SRCs) for small and big events based on the event data obtained at the watershed outlet. They revealed the event dynamic processes connecting sediment sources and downstream sediment transport. During small events, sediment transport in streams was at capacity and dominated by the deposition process, whereas during big events, it was below capacity and controlled by the erosion process

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2012, vol. 37, no2 [pp. 169-179]

Bibliographic references : 2 p.

Collation : 9 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2229

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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