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

在英国，有大量的基础设施位于或靠近海岸，其中一些非常容易受到相对较小的海浪事件和极端风暴事件的影响。大多数已发表的沿海研究，以及因此而产生的指导文件，都是基于对平均数量的预测，例如每小时的超顶率。虽然这些数据对于估计排水需求和预测内陆排水系统不足或堵塞时的洪水预测毫无疑问是有用的，但它们对单个极端溢水或冲量事件可能造成的破坏知之甚少，这些事件可能导致海防工程的全球结构破坏。该项目解决了海岸上最极端的反应问题，无论是波浪的上升，溢出量还是海防工程部分的冲击。我们的目标是在一长串随机的猛烈海浪袭击海岸的序列中，理解和模拟单个最大和最具破坏性的海浪——一场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剧烈的波浪。将对普利茅斯大学新水槽中的波浪和最近开发的计算机模型OXBOU进行详细的比较，所有这些都以英国海岸附近两个地点的波浪分析为基础。

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.