No Cover Image

Conference Paper/Proceeding/Abstract 38 views

Morphological Impacts due to Storms on a Macro-Tidal Beach

William Bennett Orcid Logo, Harshinie Karunarathna Orcid Logo, Dominic Reeve Orcid Logo

Coastal Dynamics 2017, Issue: 9

Swansea University Authors: William Bennett Orcid Logo, Harshinie Karunarathna Orcid Logo, Dominic Reeve Orcid Logo

Abstract

A set of storms, with varying intensity and duration, was used to investigate the range of morphological impacts on a macro-tidal beach (Sefton coast, Liverpool Bay, UK), using a nested computational modelling framework. Extreme wave and water level conditions were extracted from modelled and observ...

Full description

Published in: Coastal Dynamics 2017
Published: 2017
URI: https://cronfa.swan.ac.uk/Record/cronfa62018
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: A set of storms, with varying intensity and duration, was used to investigate the range of morphological impacts on a macro-tidal beach (Sefton coast, Liverpool Bay, UK), using a nested computational modelling framework. Extreme wave and water level conditions were extracted from modelled and observed data corresponding to a range of return periods, and fitted to a storm profile to provide real time offshore boundary forcing. The peak water level was found to be the main driving force in defining the bed evolution, with the strongest changes along the northern part of the Sefton coast. Breaching of the dune crest was observed in storms with a peak water level greater than the current 1 in 50 year return level. The simulation of beach evolution during storms provides very useful insights in to the morphodynamic processes, and also, provides information to improve existing coastal management strategies.
College: Faculty of Science and Engineering
Issue: 9