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(Article of periodic en Anglais - 2009)

Document title

Water-worked gravel beds in laboratory flumes - a natural analogue ?

Authors(s) and Affiliation(s)

COOPER J.R. (1) ; TAIT S.J. (2) ;
(1) Dep. of Geography, Univ., Hull, ROYAUME-UNI
(2) School of Engineering, Design and Technology, Univ., Bradford, ROYAUME-UNI

Abstract

Two types of bed formation were examined : one where sediment is manually placed and screeded and the second where sediment is fed into a running flume. This later technique created deposits through sequential cycles of sediment transport and deposition. Detailed bed surface topography measurements have been made over a screeded bed and three fed beds. In addition, bulk subsurface porosity and hydraulic conductivity have been measured. By comparing the four beds, results revealed that certain physical properties of the screeded bed were clearly different from those of the fed beds. This study clearly showed that caution should be taken when comparing velocity measurements over screeded beds with water-worked beds, and that the formation of fed beds offers an improved way of investigating intragravel flow and sediment-water interface exchange processes in gravel-bed rivers at a laboratory scale

Source

Article of periodic

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

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

Millesime : 2009, vol. 34, no3 [pp. 384-397]

Bibliographic references : 1 p.

Collation : 8 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1743

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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