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(Article of periodic en Anglais - 2012)

Document title

Testing bedload transport equations with consideration of time scales

Authors(s) and Affiliation(s)

RECKING A. (1) ; LIÉBAULT F. (1) ; PETEUIL C. (2) ; JOLIMET T. (1) ;
(1) IRSTEA, UR ETGR, Saint Martin d'Hères, FRANCE
(2) ONF, Service RTM 38, Grenoble, FRANCE

Abstract

This paper aims to identify how the time scale considered can affect bedload prediction. This was done by testing 16 common bedload transport formulas with 4 data sets corresponding to different measurement period durations : (1) highly fluctuating (quasi-)instantaneous field measurements; (2) volumes accumulated at the event scale on 2 small alpine gravel-bed rivers, potentially affected by seasonal fluctuations; (3) volumes accumulated at the interannual scale in a meandering gravel bed river, thought to be weakly subject to fluctuations; (4) time-integrated flume measurements with nearly uniform sediments. The tests confirmed that the longer the measurement period, the better the precision of the formula's prediction interval. They also demonstrate several consequential limitations

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, no7 [pp. 774-789]

Bibliographic references : 3 p.

Collation : 13 fig., 9 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3213

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