Gravel beach profile response allowing for bimodal sea states

IF 1 3区工程技术 Q4 ENGINEERING, CIVIL

Proceedings of the Institution of Civil Engineers-Maritime Engineering Pub Date : 2018-12-01 DOI:10.1680/JMAEN.2018.11

A. Polidoro, T. Pullen, John Eade, T. Mason, B. Blanco, D. Wyncoll

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引用次数: 6

Abstract

The south coast of the UK is identified as a location where significant wave swell components are present within the regional wave climate. During the winters of 2006 and 2014, several sites along the south coast of the UK were subject to significant damages where flood events were recorded. These sea–states were characterised by having a double–peaked wave spectra, observing a connection between wave spectrum shape and beach response. A 2D physical model study was carried out to investigate the effect of gravel beach profile response under wave spectra characterised by swell and wind wave periods in various combinations. The physical model results have shown the effect of bimodal wave spectrum on the beach crest erosion and have been compared with the parametric model of SHINGLE and the numerical model XBeach-G. Based on this 2D physical model study a new parametric model, Shingle–B, has been derived and an online tool has been developed and made available on the website for the National Network of Regional Coastal Monitoring Programmes of England. This new tool has been validated with two sites in the South of England where field data of both waves and profiles was available.

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允许双峰海况的砾石海滩剖面响应

英国南海岸被确定为区域波浪气候中存在显著波浪膨胀成分的位置。在2006年和2014年的冬天，英国南部海岸的几个地点遭受了严重的破坏，记录了洪水事件。这些海况的特点是具有双峰波浪谱，观察到波浪谱形状和海滩响应之间的联系。采用二维物理模型研究了以涌浪和风浪周期为特征的波浪谱在不同组合下对砾石滩剖面响应的影响。物理模型结果显示了双峰波谱对海滩波峰侵蚀的影响，并与参数化模型SHINGLE和数值模型XBeach-G进行了比较。在此二维物理模型研究的基础上，导出了一个新的参数模型，即Shingle-B，并开发了一个在线工具，并在英国区域海岸监测计划国家网络的网站上提供。这个新工具已经在英格兰南部的两个地点进行了验证，在那里可以获得波和剖面的现场数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Civil Engineers-Maritime Engineering 工程技术-工程：大洋

CiteScore

6.10

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Maritime Engineering publishes technical papers relevant to civil engineering in port, estuarine, coastal and offshore environments. Relevant to consulting, client and contracting engineers as well as researchers and academics, the journal focuses on safe and sustainable engineering in the salt-water environment and comprises papers regarding management, planning, design, analysis, construction, operation, maintenance and applied research. The journal publishes papers and articles from industry and academia that conveys advanced research that those developing, designing or constructing schemes can begin to apply, as well as papers on good practices that others can learn from and utilise.