Evaluating barrier beach protection with numerical modelling. A practical case

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL Coastal Engineering Pub Date : 2024-04-18 DOI:10.1016/j.coastaleng.2024.104522

Xavier Sánchez-Artús , Buckle Subbiah , Vicente Gracia , Manuel Espino , Manel Grifoll , Antoni Espanya , Agustín Sánchez-Arcilla

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Abstract

Embryonic dunes, continuous dunes and classical beach nourishment are tested as soft coastal protection measures in the vulnerable Trabucador barrier beach located in the NW Mediterranean Sea against different storm conditions. The beach was impacted by severe breaching events during past storms. Evaluation of the performance of the dunes and nourishment as coastal protection measures for the barrier beach is carried out using XBeach model for three different storm events: Storm Isaak being a mid-tier double peak storm, Storm Filomena a typical larger storm of the region and Storm Gloria the largest ever storm to hit the region, with 7, 12 and 60 years of return period respectively. The model showed embryonic dunes and shoreface nourishment systems greatly protect the beach against Storm Isaak and Storm Filomena but did not withstand Storm Gloria considering it being almost 1.5 times larger than the second-highest storm in terms of significant wave height. The study aids in assessing the effectiveness of various mitigation actions for barrier beaches, with the aim of implementing them in practical field applications.

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利用数值建模评估隔离滩保护。实用案例

在位于地中海西北部的脆弱的特拉布卡多尔屏障海滩，针对不同的风暴条件，测试了作为软海岸保护措施的胚胎沙丘、连续沙丘和传统的海滩滋养。在过去的风暴中，该海滩曾受到严重冲毁事件的影响。使用 XBeach 模型，针对三种不同的风暴事件，评估了沙丘和护岸作为屏障海滩海岸保护措施的性能：伊萨克风暴是中级双峰风暴，菲洛梅娜风暴是该地区典型的较大风暴，格洛丽亚风暴是该地区有史以来最大的风暴，其重现期分别为 7 年、12 年和 60 年。模型显示，雏形沙丘和海岸表面滋养系统在很大程度上保护了海滩免受风暴伊萨克和风暴菲洛梅娜的侵袭，但考虑到风暴格洛丽亚的显著波高几乎是第二大风暴的 1.5 倍，因此无法抵御风暴格洛丽亚的侵袭。这项研究有助于评估各种屏障海滩减灾措施的有效性，以便在实际应用中加以实施。

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来源期刊

Coastal Engineering 工程技术-工程：大洋

CiteScore

9.20

自引率

13.60%

发文量

审稿时长

3.5 months

期刊介绍： Coastal Engineering is an international medium for coastal engineers and scientists. Combining practical applications with modern technological and scientific approaches, such as mathematical and numerical modelling, laboratory and field observations and experiments, it publishes fundamental studies as well as case studies on the following aspects of coastal, harbour and offshore engineering: waves, currents and sediment transport; coastal, estuarine and offshore morphology; technical and functional design of coastal and harbour structures; morphological and environmental impact of coastal, harbour and offshore structures.