Wave overtopping due to harbour resonance
Wave overtopping due to harbour resonance
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DOI：
10.1016/j.coastaleng.2021.103973
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发表时间：
2021-08
影响因子：
4.4
通讯作者：
Nikolaos Maravelakis;N. Kalligeris;P. Lynett;V. Skanavis;C. Synolakis
中科院分区：
文献类型：
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作者：
Nikolaos Maravelakis;N. Kalligeris;P. Lynett;V. Skanavis;C. Synolakis
在地中海东部的一个小的不规则形状的港口的港口共振和它的贡献，以波越浪检查。海上波浪测量用于确定风暴事件期间的入射波条件。在多个风暴事件期间，通过在四个不同的部署位置的现场测量确定的海港盆地的共振周期。使用Boussinesq型模型和理想化海上频谱的数值模拟产生了与现场测量相似的谐振频率，并使我们能够可视化相应的谐振模式。通过自由水面高程的数值时间序列与EurOtop公式相结合，推导出了沿直立式码头沿着的越浪量。两种方法来估计波浪越浪率进行检查和比较：一种新的方法，考虑在海涌频率范围内的波能和通过时间序列在亚重力频率范围内变化的干舷，和传统的方法，认为频谱参数沿着整个频率范围。新的方法提供了一个估计的贡献港口共振波越浪，考虑到亚重力波能量内的盆地主要是共振驱动。
Harbour resonance and its contribution to wave overtopping are examined for a small irregular-shaped harbour in the eastern Mediterranean. Offshore wave measurements are used to determine the incident wave conditions during storm events. Resonant periods of the harbour basin are identified through in situ measurements at four different deployment locations during multiple storm events. Numerical simulations using a Boussinesq-type model and an idealised offshore spectrum yielded similar resonant frequencies to the field measurements and allowed us to visualise the corresponding resonant modes. Wave overtopping along the vertical docks of the harbour is inferred by combining numerical time series of free surface elevation with EurOtop formulae. Two approaches to estimate wave overtopping rates are examined and compared: a novel approach considering wave energy in the sea-swell frequency range and varying the freeboard through time series in the infragravity frequency range, and the conventional method that considers spectral parameters along the entire frequency range. The novel approach provides an estimate for the contribution of harbour resonance to wave overtopping considering that infragravity wave energy inside the basin is mainly resonance-driven.