Environmental impact of undular tidal bores in tropical rivers
(2005) In Environmental Fluid Mechanics 5(5). p.481-494- Abstract
- A tidal bore impacts significantly on the estuarine ecosystem, although little is known on the flow field, mixing and sediment motion beneath tidal bores. In the absence of detailed systematic field measurements, a quasi-steady flow analogy was applied to investigate undular tidal bores with inflow Froude numbers between 1.25 and 1.6. Experimental results indicated that rapid flow redistributions occur beneath the free-surface undulations, with significant variations in bed shear stress between wave crests and troughs. Dynamic similarity was used to predict detailed flow characteristics of undular tidal bores. The effects of periodic loading on river sediments, scour of river bed and flow mixing behind the bore are discussed. A better... (More)
- A tidal bore impacts significantly on the estuarine ecosystem, although little is known on the flow field, mixing and sediment motion beneath tidal bores. In the absence of detailed systematic field measurements, a quasi-steady flow analogy was applied to investigate undular tidal bores with inflow Froude numbers between 1.25 and 1.6. Experimental results indicated that rapid flow redistributions occur beneath the free-surface undulations, with significant variations in bed shear stress between wave crests and troughs. Dynamic similarity was used to predict detailed flow characteristics of undular tidal bores. The effects of periodic loading on river sediments, scour of river bed and flow mixing behind the bore are discussed. A better understanding of these processes will contribute to better management practices in tidal bore affected rivers, including the Styx and Daly rivers in tropical Australia. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/209763
- author
- Donnelly, Chantal LU and Chanson, H
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- undular tidal bore, undular hydraulic jump, process, sediment, pressure, physical modelling, boundary shear stress, mixing, velocity
- in
- Environmental Fluid Mechanics
- volume
- 5
- issue
- 5
- pages
- 481 - 494
- publisher
- Springer
- external identifiers
-
- wos:000234824800004
- scopus:31444434414
- ISSN
- 1573-1510
- DOI
- 10.1007/s10652-005-0711-0
- language
- English
- LU publication?
- yes
- id
- 4529b061-7c4c-4512-b647-1cb88b91131e (old id 209763)
- date added to LUP
- 2016-04-01 12:26:17
- date last changed
- 2022-03-21 04:22:15
@article{4529b061-7c4c-4512-b647-1cb88b91131e,
abstract = {{A tidal bore impacts significantly on the estuarine ecosystem, although little is known on the flow field, mixing and sediment motion beneath tidal bores. In the absence of detailed systematic field measurements, a quasi-steady flow analogy was applied to investigate undular tidal bores with inflow Froude numbers between 1.25 and 1.6. Experimental results indicated that rapid flow redistributions occur beneath the free-surface undulations, with significant variations in bed shear stress between wave crests and troughs. Dynamic similarity was used to predict detailed flow characteristics of undular tidal bores. The effects of periodic loading on river sediments, scour of river bed and flow mixing behind the bore are discussed. A better understanding of these processes will contribute to better management practices in tidal bore affected rivers, including the Styx and Daly rivers in tropical Australia.}},
author = {{Donnelly, Chantal and Chanson, H}},
issn = {{1573-1510}},
keywords = {{undular tidal bore; undular hydraulic jump; process; sediment; pressure; physical modelling; boundary shear stress; mixing; velocity}},
language = {{eng}},
number = {{5}},
pages = {{481--494}},
publisher = {{Springer}},
series = {{Environmental Fluid Mechanics}},
title = {{Environmental impact of undular tidal bores in tropical rivers}},
url = {{http://dx.doi.org/10.1007/s10652-005-0711-0}},
doi = {{10.1007/s10652-005-0711-0}},
volume = {{5}},
year = {{2005}},
}