Cargando…

New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters

Advances in the development of prediction tools for wave overtopping allow now for overtopping volumes to be estimated with good accuracy, with the combined use of mean overtopping rates and maximum wave by wave overtopping volumes in a sequence of wave overtopping events. While previous literature...

Descripción completa

Detalles Bibliográficos
Autores principales: Salauddin, M., O’Sullivan, J. J., Abolfathi, S., Peng, Z., Dong, S., Pearson, J. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9519878/
https://www.ncbi.nlm.nih.gov/pubmed/36171253
http://dx.doi.org/10.1038/s41598-022-20464-5
_version_ 1784799497658826752
author Salauddin, M.
O’Sullivan, J. J.
Abolfathi, S.
Peng, Z.
Dong, S.
Pearson, J. M.
author_facet Salauddin, M.
O’Sullivan, J. J.
Abolfathi, S.
Peng, Z.
Dong, S.
Pearson, J. M.
author_sort Salauddin, M.
collection PubMed
description Advances in the development of prediction tools for wave overtopping allow now for overtopping volumes to be estimated with good accuracy, with the combined use of mean overtopping rates and maximum wave by wave overtopping volumes in a sequence of wave overtopping events. While previous literature has tended to focus on mean overtopping rates at coastal structures, limited studies have investigated the wave by wave overtopping volumes at coastal sea defences; in particular, a paucity of studies have focussed on the prediction of the shape parameter in the Weibull distribution (i.e., Weibull b) of overtopping volumes. This study provides new insights on the probability distribution of individual wave overtopping volumes at plain vertical seawalls by analysing the measured Weibull b values derived from a series of laboratory experiments on seawalls performed on a wide range of wave conditions and crest freeboards. The influence of wave conditions (wave steepness, significant wave height), structural parameters (crest freeboard, toe water depth), impulsiveness, probability of overtopping waves, and overtopping discharge on Weibull b parameter were examined, and then compared with the well-established empirical formulae. For the conditions covered within this study, it was found that the probability distribution of wave-by-wave overtopping volumes follow a 2-parameter Weibull distribution. No apparent differences in Weibull b values were reported with the variation of incident wave steepness and impulsiveness parameter. Results of this study revealed that Weibull b values at vertical walls, subjected to non-impulsive wave conditions, can be predicted reasonably well using relative freeboard and relative overtopping rates. A new unified formula is proposed for the estimation of Weibull b values at vertical walls under impulsive and non-impulsive wave attack.
format Online
Article
Text
id pubmed-9519878
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-95198782022-09-30 New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters Salauddin, M. O’Sullivan, J. J. Abolfathi, S. Peng, Z. Dong, S. Pearson, J. M. Sci Rep Article Advances in the development of prediction tools for wave overtopping allow now for overtopping volumes to be estimated with good accuracy, with the combined use of mean overtopping rates and maximum wave by wave overtopping volumes in a sequence of wave overtopping events. While previous literature has tended to focus on mean overtopping rates at coastal structures, limited studies have investigated the wave by wave overtopping volumes at coastal sea defences; in particular, a paucity of studies have focussed on the prediction of the shape parameter in the Weibull distribution (i.e., Weibull b) of overtopping volumes. This study provides new insights on the probability distribution of individual wave overtopping volumes at plain vertical seawalls by analysing the measured Weibull b values derived from a series of laboratory experiments on seawalls performed on a wide range of wave conditions and crest freeboards. The influence of wave conditions (wave steepness, significant wave height), structural parameters (crest freeboard, toe water depth), impulsiveness, probability of overtopping waves, and overtopping discharge on Weibull b parameter were examined, and then compared with the well-established empirical formulae. For the conditions covered within this study, it was found that the probability distribution of wave-by-wave overtopping volumes follow a 2-parameter Weibull distribution. No apparent differences in Weibull b values were reported with the variation of incident wave steepness and impulsiveness parameter. Results of this study revealed that Weibull b values at vertical walls, subjected to non-impulsive wave conditions, can be predicted reasonably well using relative freeboard and relative overtopping rates. A new unified formula is proposed for the estimation of Weibull b values at vertical walls under impulsive and non-impulsive wave attack. Nature Publishing Group UK 2022-09-28 /pmc/articles/PMC9519878/ /pubmed/36171253 http://dx.doi.org/10.1038/s41598-022-20464-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Salauddin, M.
O’Sullivan, J. J.
Abolfathi, S.
Peng, Z.
Dong, S.
Pearson, J. M.
New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
title New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
title_full New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
title_fullStr New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
title_full_unstemmed New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
title_short New insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
title_sort new insights in the probability distributions of wave-by-wave overtopping volumes at vertical breakwaters
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9519878/
https://www.ncbi.nlm.nih.gov/pubmed/36171253
http://dx.doi.org/10.1038/s41598-022-20464-5
work_keys_str_mv AT salauddinm newinsightsintheprobabilitydistributionsofwavebywaveovertoppingvolumesatverticalbreakwaters
AT osullivanjj newinsightsintheprobabilitydistributionsofwavebywaveovertoppingvolumesatverticalbreakwaters
AT abolfathis newinsightsintheprobabilitydistributionsofwavebywaveovertoppingvolumesatverticalbreakwaters
AT pengz newinsightsintheprobabilitydistributionsofwavebywaveovertoppingvolumesatverticalbreakwaters
AT dongs newinsightsintheprobabilitydistributionsofwavebywaveovertoppingvolumesatverticalbreakwaters
AT pearsonjm newinsightsintheprobabilitydistributionsofwavebywaveovertoppingvolumesatverticalbreakwaters