An investigation into the relationships between wave parameter data and beach profile response at Shoreham and Lancing

Hayward, Ian R. (2007) An investigation into the relationships between wave parameter data and beach profile response at Shoreham and Lancing. BSc dissertation, University of Portsmouth.

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    Abstract

    This study investigates the cross shore profile change of gravel beaches, with particular emphasis placed upon the relationship between morphological change and the hydrodynamic conditions. The investigation used secondary data from the Collaborative Shingle Beach Transport Project where profile surveys and wave data was collected from Shoreham in 1996 and Lancing 1997. Both study sites are located on the south coast of England and vary significantly as the Lancing beach is heavily managed with rock and timber groynes, whereas the Shoreham beach can be classed as natural. Beach morphology was expressed in terms of profile volume and difference in profile volume between surveys was calculated. This was then paired with a range of hydrodynamic properties. Multivariate regression analysis was then used to develop relationships between the morphological change and hydrodynamic properties. It was discovered that collinearity was a significant problem. Variables such as wave period and wave length were found to measure the same variation in profile volume change at both sites. It was also discovered that wave approach and wave energy could explain up to 54.8% of the variation in morphological change at Shoreham in 1996; however this was only significant to a 90% confidence level. At the managed Lancing site for 1997 the same hydrodynamic variables were found to account for up to 17.2% of the variation in morphological profile change. This relationship was found to be significant to a 95% confidence level.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Science > Department of Geography
    Depositing User: Jane Polwin
    Date Deposited: 20 Jan 2011 12:47
    Last Modified: 28 Jan 2015 11:13
    URI: http://eprints.port.ac.uk/id/eprint/348

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