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Assessing the natural morphological sensitivity of a pinned, soft-cliff, sandy coast to a changing wave climate

Barkwith, A.; Thomas, C.W.; Limber, P.W.; Ellis, M.A.; Murray, A.B.. 2013 Assessing the natural morphological sensitivity of a pinned, soft-cliff, sandy coast to a changing wave climate. Earth Surface Dynamics Discussion, 1. 855-889. 10.5194/esurfd-1-855-2013

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Abstract/Summary

The impact of future sea level rise on coastal erosion as a result of a changing climate has been studied in detail over the past decade. The potential impact of a changing wave climate on erosion rates, however, is not typically considered. We explore the effect of changing wave climates on a pinned, soft-cliff, sandy coastline, using as an example the Holderness coast of East Yorkshire, UK. The initial phase of the study concentrates on calibrating a model to recently measured erosion rates for the Holderness coast using an ensemble of geomorphological and shoreface parameters under an observed offshore wave climate. Stochastic wave climate data are perturbed gradually to assess the sensitivity of the coastal morphology to changing wave climate. Forward-modelled simulations indicate the nature of the morphological response of the coast to changes in wave climate over the next century. Results indicate that changes to erosion rates over the next century will be spatially and temporally heterogeneous, with a variability of up to ±25% in the erosion rate relative to projections under constant wave climate. The heterogeneity results from the current coastal morphology and the sediment transport dynamics consequent on differing wave climate regimes.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.5194/esurfd-1-855-2013
Additional Information. Not used in RCUK Gateway to Research.: This work is distributed under the Creative Commons Attribution 3.0 License
NORA Subject Terms: Earth Sciences
Date made live: 28 Jan 2014 14:02 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/504631

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