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 : Spring tidal pumping
Spring tidal pumping
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Spring tidal pumping [STP] is the increase in mean water level of a tidal basin in response to the larger tidal forcing of the spring tide. It is of particular importance in the inundation of tidal wetlands and in the flushing of estuaries with constricted entrances. Using a fourier expansion analysis the principal factors causing STP are identified and quantified to first order. A previous paper used a 2-cell model based on the non linear equations to explore the response of a small estuary to each of these processes It was shown that the dominant cause of STP is the asymmetry in flow caused by the variation of entrance channel depth over the tidal cycle. Other factors such as nonlinear resistance to flow and catchment flows have quite minor effects. Tidal data from Lake Conjola in south east Australia are presented and analysed to demonstrate the role of the forcing tidal constituents on STP and to illustrate the nature of this relationship as the entrance becomes progressively restricted.
File Size : 325,746 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 : 01/06/2011
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