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Influence of directional spreading on wave overtopping of sea dikes with gentle and shallow foreshores. / Altomare, Corrado; Suzuki, Tomohiro; Verwaest, Toon.

In: Coastal Engineering, Vol. 157, 103654, 2020.

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Altomare, Corrado ; Suzuki, Tomohiro ; Verwaest, Toon. / Influence of directional spreading on wave overtopping of sea dikes with gentle and shallow foreshores. In: Coastal Engineering. 2020 ; Vol. 157.

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@article{59aa7b98c8e94720a19128d7d413e345,
title = "Influence of directional spreading on wave overtopping of sea dikes with gentle and shallow foreshores",
abstract = "The work highlights the importance of directional spreading effects on wave overtopping estimation in shallow and mild sloping foreshores. Wave short-crestedness leads, in general, to a reduction of mean overtopping discharges on coastal structures. In the present work, the case of a sea dike with gentle foreshore in very and extremely shallow water conditions is analysed. Physical model tests have been carried out in order to investigate the effect of directional spreading on overtopping and incident wave characteristics. In the present experimental campaign, the effect of wave spreading has only been investigated for perpendicular wave attack. Results show that directional spreading is proved to cause a reduction of average discharge of sea dikes with gentle and shallow foreshore. Expressions for the reduction factor for directional spreading are derived, fitted on the tested database. The use of this reduction factor leads to more accurate prediction and avoids overtopping overestimation, however reduction-factor formulations are overtopping-formula depending.",
keywords = "Directional spreading, Reduction factor, Sea dike, Shallow foreshore, Wave overtopping",
author = "Corrado Altomare and Tomohiro Suzuki and Toon Verwaest",
year = "2020",
doi = "10.1016/j.coastaleng.2020.103654",
language = "English",
volume = "157",
journal = "Coastal Engineering",
issn = "0378-3839",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Influence of directional spreading on wave overtopping of sea dikes with gentle and shallow foreshores

AU - Altomare, Corrado

AU - Suzuki, Tomohiro

AU - Verwaest, Toon

PY - 2020

Y1 - 2020

N2 - The work highlights the importance of directional spreading effects on wave overtopping estimation in shallow and mild sloping foreshores. Wave short-crestedness leads, in general, to a reduction of mean overtopping discharges on coastal structures. In the present work, the case of a sea dike with gentle foreshore in very and extremely shallow water conditions is analysed. Physical model tests have been carried out in order to investigate the effect of directional spreading on overtopping and incident wave characteristics. In the present experimental campaign, the effect of wave spreading has only been investigated for perpendicular wave attack. Results show that directional spreading is proved to cause a reduction of average discharge of sea dikes with gentle and shallow foreshore. Expressions for the reduction factor for directional spreading are derived, fitted on the tested database. The use of this reduction factor leads to more accurate prediction and avoids overtopping overestimation, however reduction-factor formulations are overtopping-formula depending.

AB - The work highlights the importance of directional spreading effects on wave overtopping estimation in shallow and mild sloping foreshores. Wave short-crestedness leads, in general, to a reduction of mean overtopping discharges on coastal structures. In the present work, the case of a sea dike with gentle foreshore in very and extremely shallow water conditions is analysed. Physical model tests have been carried out in order to investigate the effect of directional spreading on overtopping and incident wave characteristics. In the present experimental campaign, the effect of wave spreading has only been investigated for perpendicular wave attack. Results show that directional spreading is proved to cause a reduction of average discharge of sea dikes with gentle and shallow foreshore. Expressions for the reduction factor for directional spreading are derived, fitted on the tested database. The use of this reduction factor leads to more accurate prediction and avoids overtopping overestimation, however reduction-factor formulations are overtopping-formula depending.

KW - Directional spreading

KW - Reduction factor

KW - Sea dike

KW - Shallow foreshore

KW - Wave overtopping

UR - http://www.scopus.com/inward/record.url?scp=85078694710&partnerID=8YFLogxK

U2 - 10.1016/j.coastaleng.2020.103654

DO - 10.1016/j.coastaleng.2020.103654

M3 - Article

VL - 157

JO - Coastal Engineering

T2 - Coastal Engineering

JF - Coastal Engineering

SN - 0378-3839

M1 - 103654

ER -

ID: 69715929