ENFORCE - Extreme responses using NewWave: Forces, Overtopping and Run-up in Coastal Engineering

在英国，有相当数量的基础设施位于海岸或靠近海岸，其中一些非常容易受到相对较小的海浪事件以及极端风暴事件的影响。大多数已发表的沿海研究，以及相应的指导性文件，都是基于对平均数量的预测，如每小时的溢流率。虽然这些资料无疑对估计排水需求和在内陆排水系统不足或堵塞时作出洪水预测十分有用，但却未能深入了解单一的极端溢流或冲激事件可能造成的损害，而这些极端溢流或冲激事件可能会导致海防工程出现全球结构故障。这个项目解决了海岸最极端的反应问题，无论这是海浪抬高、超过流量还是对一段海防工程的冲击。我们的目标是了解并模拟袭击海岸的严重海浪的长期随机序列中单个最大和最具破坏性的海浪--一个由数千个单独海浪组成的风暴。我们将使用局部大浪群的想法来模拟风暴中偶然出现的最严重的海浪。普利茅斯大学的新水槽中的波浪将与最近开发的计算机模型OXBOU进行详细的比较，所有这些都建立在对英国海岸外两个地点的波浪分析的基础上。

In the UK there is a significant amount of infrastructure located at or close to the coast, some of it highly vulnerable to relatively small wave events as well as extreme storm events. Most published coastal studies, and hence guidance documents, are based on the prediction of average quantities such as overtopping rates per hour. Whilst these are undoubtedly useful for estimating drainage requirements and for making flood predictions if the inland drainage is inadequate or becomes blocked, they give little insight into the damage that may be caused by a single extreme overtopping or impulse event, which could cause global structural failure of sea defence works. This project addresses the problem of the most extreme responses at the coast, whether this is wave run-up, overtopping volume or impulse on a section of sea defence works. We aim to understand and model the individual largest and most damaging waves within a long random sequence of severe waves hitting the coast - a storm consisting of thousands of individual waves. We will use the idea of localised groups of large waves to model the most severe waves that arise by chance in a storm. Detailed comparisons will be made between waves in the new flume at Plymouth University and a recently developed computer model OXBOU, all underpinned by analysis of waves at 2 locations off the British coast.