IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : On the Transition between Tide- and River-dominated Back-barrier Estuarine Environments
On the Transition between Tide- and River-dominated Back-barrier Estuarine Environments
Author : Zeng Zhou, Giovanni Coco, Maitane Olabarrieta and Mick van der Wegen
This work uses numerical simulations to study the formation and long-term morphological evolution of channel-shoal systems in a river-influenced back-barrier basin. The major parameters, i.e., tidal range and fluvial discharge, are varied to investigate the morphological evolution and characteristics of pattern formation. It is found that larger tidal range and fluvial discharge lead to faster channel-shoal formation and more sedimentation on the ebb delta. Model results show that tidal processes dominate when the ratio (r ) between the mean tidal discharge () and river discharge (Q) is larger than Q t approximately 30 while river dominates when r is smaller than 10. The transition falls in the range of r Q Q roughly between 10 and 30, which generally agrees with the traditional empirical transition of r < 20 Q when tide dominates. The conceptual model proposed by Nichols and Boon (1994) is also quantitatively confirmed by numerical modelling.
File Size : 941,663 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING
Date Published : 18/07/2016
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