Halcrow, Coastal Studies Forward Programme Data Compilation ...

described is applicable over a range of sea-level changes. Projections ofsea-level beyond 100 years are also uncertain.the future sediment yields generated by recession, as the cliffs retreatthrough tills of variable, but largely unknown gravel compositionthe historical, current and future sediment budget of the fringing beachesthat provide a greater or lesser degree of protection to cliffs, especiallyuncertainty regarding the sediment transport pathways and rates ofattrition alongshore, offshore and in and out of sediment sinksthe future sediment budget, especially the sensitivity to variations indominant wave direction that might occur as a result of changes in stormtracks across the Atlantic.The relevance for future predictions of the historical response of the Ravenglassestuary to higher than present sea-level, has been highlighted. This summary reportand the associated CCCPM reports provide a preliminary assessment but a moredetailed investigation is necessary to fully integrate recently commissioned work(see Section 1.5).Doc No 1 Rev 2: Date: May 2010 43