Abstract
Pevensey Coastal Defence Ltd has been managing the sea defences in Pevensey Bay, on the south coast of England, since June 2000. The public–private partnership sea defence scheme is a 25-year project to enhance and then maintain a mixed sand/shingle embankment that will provide protection against flooding and prevent breach of the bank from any storm up to 1:400 years. Providing the required standard of defence means ensuring sufficient shingle is on the beach, and that it is in the right place. This is achieved by monthly global positioning system monitoring surveys. Now, with data from over 100 surveys, there is evidence to suggest that fine sediment from the sand terrace below the embankment is being lost at a rate of around 8000 m3/year. This paper looks at possible natural and man-made reasons why this may occur, with a view to seeing whether this trend may be reversed or contained.
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Schedule a callMore From: Proceedings of the Institution of Civil Engineers - Maritime Engineering
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