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 : 34th Congress - Brisbane (2011) : THEME 2: Coastal Hydraulics: Form and Function : The impact of entrance breakwaters on large estuaries
The impact of entrance breakwaters on large estuaries
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Data and theory show that several large estuaries in New South Wales that were thought to be stable after having been modified by entrance breakwaters are, in fact, unstable and have been scouring for decades as a result of the breakwater construction. Research shows that this trend may well continue for centuries before the entrances achieve stable hydraulic regimes. Implications have included the requirements for on-going extensive bank erosion protection works along channels, reconstruction of bridge pier foundations and permanent changes to fringing ecologies, none of which previously had been anticipated. Analysis of available time series of amplitude and phase of tidal constituents has provided signatures that, along with established estuary stability theories, allow for an informed assessment of the future course of the scouring action and the timeframes to reach stable equilibrium. The research also provides a cautionary tale for future entrance training projects.
File Size : 1,270,642 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 2: Coastal Hydraulics: Form and Function
Date Published : 01/07/2011
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