Inception of gravel bed motion beneath tidal bores: An experimental study

Khezri, N. and Chanson, H. (2011). Inception of gravel bed motion beneath tidal bores: An experimental study. In: Eric Valentine, Colin Apelt, James Ball, Hubert Chanson, Ron Cox, Robert Ettema, George Kuczera, Martin Lambert, Bruce Melville and Jane Sargison, Proceedings of the 34th World Congress of the International Association for Hydro-Environment Research and Engineering : 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering. 34th IAHR World Congress, 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering, Brisbane, Australia, (1077-1084). 26 June - 1 July 2011.

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Name Description MIMEType Size Downloads
Author Khezri, N.
Chanson, H.
Title of paper Inception of gravel bed motion beneath tidal bores: An experimental study
Conference name 34th IAHR World Congress, 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering
Conference location Brisbane, Australia
Conference dates 26 June - 1 July 2011
Proceedings title Proceedings of the 34th World Congress of the International Association for Hydro-Environment Research and Engineering : 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering
Place of Publication Barton, ACT, Australia
Publisher Engineers Australia
Publication Year 2011
Sub-type Fully published paper
ISBN 9780858258686
0858258684
Editor Eric Valentine
Colin Apelt
James Ball
Hubert Chanson
Ron Cox
Robert Ettema
George Kuczera
Martin Lambert
Bruce Melville
Jane Sargison
Start page 1077
End page 1084
Total pages 8
Collection year 2012
Language eng
Abstract/Summary A tidal bore is a positive surge taking place during the flood tide under macro-tidal conditions and the bore represents the leading edge of the tidal wave propagating upstream. The fundamentals of tidal bores remain unknown, although some physical experiments were performed during the last two decades. In this study, some physical modelling was performed to investigate the tidal bore propagation and turbulent mixing on fixed and movable gravel beds with both undular and breaking bores. Further observations of particle motion beneath the bore front were recorded. The results showed the significant impact of breaking bore propagation on the gravel bed motion, associated with upstream gravel bed load motion behind the bore. The gravel bed particles were destabilised by the roller toe passage and advected upstream with a convective velocity about 1/7th of the bore celerity.
Keyword Tidal bores
Turbulence
Sediment motion
Inception
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Joint Conference: 34th World Congress of the International Association for Hydro-Environment Engineering and Research (IAHR); 33rd National Hydrology and Water Resources Symposium; and the 10th National Conference on Hydraulics in Water Engineering.ance and Uncertainty: Water in a Changing World

Document type: Conference Paper
Collections: School of Civil Engineering Publications
Official 2012 Collection
 
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Created: Sat, 02 Jul 2011, 16:17:57 EST by Hubert Chanson on behalf of School of Civil Engineering