Prediction Of Storm Impacts And Shoreline
Retreat Induced By Hypothetical Storms On Open
Coastlines
Author(s)
O. Ferreira & J. Alveirinho Dias
Abstract
Storms are the main mechanism responsible for coastal erosion on open
coastlines. In the last few years an effort has been made to apply and validate
simple models determining coastal retreat and dune erosion due to storms on
highly energetic coasts. In this study, the convolution method was applied to
determine the impact of two hypothetical storms called the "mean storm"
(return period of 0.7 years) and the "century storm" (return period of 100 years)
on the coast between Aveiro and Cape Mondego (Northwest Portugal). The
application of the model to different sites resulted in a prediction of beach
erosion volumes between 70 and llOnf/m for the "mean storm", without
showing dune retreat at any of the analysed sites. According to calculations, the
"century storm" would be expected
Keywords
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