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Modelling Extreme Wave Overtopping at Aberystwyth Promenade

Daniel A. Thompson, Harshinie Karunarathna Orcid Logo, Dominic Reeve Orcid Logo

Water, Volume: 9, Issue: 9, Start page: 663

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

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DOI (Published version): 10.3390/w9090663

Abstract

The work presents a methodology to assess the coastal impacts during a storm event which caused significant damage along the promenade at Aberystwyth, Wales on the 3 January 2014. Overtopping was analysed in detail for a section of promenade by downscaling offshore wave conditions to force a surf zo...

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Published in: Water
ISSN: 2073-4441
Published: MDPI AG 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa35015
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first_indexed 2017-08-24T18:42:57Z
last_indexed 2020-11-03T03:46:41Z
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spelling 2020-11-02T17:19:32.4735384 v2 35015 2017-08-24 Modelling Extreme Wave Overtopping at Aberystwyth Promenade 0d3d327a240d49b53c78e02b7c00e625 0000-0002-9087-3811 Harshinie Karunarathna Harshinie Karunarathna true false 3e76fcc2bb3cde4ddee2c8edfd2f0082 0000-0003-1293-4743 Dominic Reeve Dominic Reeve true false 2017-08-24 CIVL The work presents a methodology to assess the coastal impacts during a storm event which caused significant damage along the promenade at Aberystwyth, Wales on the 3 January 2014. Overtopping was analysed in detail for a section of promenade by downscaling offshore wave conditions to force a surf zone hydrodynamic model, NEWRANS. Overtopping discharges are computed and were in qualitative agreement with published discharges for the level of damage observed along the promenade. Peak storm conditions were observed to arrive just before and during high tide at Aberystwyth, which in addition to a storm surge and wave-setup, contributed to the damage observed. A high frequency of overtopping occurs during peak high tide, with overtopping also occurring in the hour leading up to and following high tide. Finally, comparisons to design methods for the estimation of overtopping discharge were made. Current empirical formulae underestimated the peak overtopping event at high tide. The methodology applied is generic and applicable to any location. Journal Article Water 9 9 663 MDPI AG 2073-4441 wave overtopping; coastal flooding; modelling; extreme events 14 9 2017 2017-09-14 10.3390/w9090663 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2020-11-02T17:19:32.4735384 2017-08-24T14:51:30.3310085 College of Engineering Engineering Daniel A. Thompson 1 Harshinie Karunarathna 0000-0002-9087-3811 2 Dominic Reeve 0000-0003-1293-4743 3 0035015-02102017153938.pdf thompson2017(3).pdf 2017-10-02T15:39:38.6800000 Output 3684415 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution License (CC-BY). true eng https://creativecommons.org/licenses/by/4.0/
title Modelling Extreme Wave Overtopping at Aberystwyth Promenade
spellingShingle Modelling Extreme Wave Overtopping at Aberystwyth Promenade
Harshinie Karunarathna
Dominic Reeve
title_short Modelling Extreme Wave Overtopping at Aberystwyth Promenade
title_full Modelling Extreme Wave Overtopping at Aberystwyth Promenade
title_fullStr Modelling Extreme Wave Overtopping at Aberystwyth Promenade
title_full_unstemmed Modelling Extreme Wave Overtopping at Aberystwyth Promenade
title_sort Modelling Extreme Wave Overtopping at Aberystwyth Promenade
author_id_str_mv 0d3d327a240d49b53c78e02b7c00e625
3e76fcc2bb3cde4ddee2c8edfd2f0082
author_id_fullname_str_mv 0d3d327a240d49b53c78e02b7c00e625_***_Harshinie Karunarathna
3e76fcc2bb3cde4ddee2c8edfd2f0082_***_Dominic Reeve
author Harshinie Karunarathna
Dominic Reeve
author2 Daniel A. Thompson
Harshinie Karunarathna
Dominic Reeve
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container_title Water
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container_start_page 663
publishDate 2017
institution Swansea University
issn 2073-4441
doi_str_mv 10.3390/w9090663
publisher MDPI AG
college_str College of Engineering
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hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
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description The work presents a methodology to assess the coastal impacts during a storm event which caused significant damage along the promenade at Aberystwyth, Wales on the 3 January 2014. Overtopping was analysed in detail for a section of promenade by downscaling offshore wave conditions to force a surf zone hydrodynamic model, NEWRANS. Overtopping discharges are computed and were in qualitative agreement with published discharges for the level of damage observed along the promenade. Peak storm conditions were observed to arrive just before and during high tide at Aberystwyth, which in addition to a storm surge and wave-setup, contributed to the damage observed. A high frequency of overtopping occurs during peak high tide, with overtopping also occurring in the hour leading up to and following high tide. Finally, comparisons to design methods for the estimation of overtopping discharge were made. Current empirical formulae underestimated the peak overtopping event at high tide. The methodology applied is generic and applicable to any location.
published_date 2017-09-14T03:47:42Z
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