原文传递
Relative Magnitude of Infragravity Waves at Coastal Dikes with Shallow Foreshores: A Prediction Tool
| 题名： | Relative Magnitude of Infragravity Waves at Coastal Dikes with Shallow Foreshores: A Prediction Tool |
| 正文语种： | 英文 |
| 作者： | Christopher H. Lashley; Jeremy D. Bricker; Jentsje van der Meer; Corrado Altomare; Tomohiro Suzuki |
| 作者单位： | Delft Univ.; Univ, of Michigan; Universitat Politecnica de Catalunya一Bar-celonaTech; Ghent Univ. |
| 摘要： | Despite the widely recognized role of infragravity (IG) waves in many often-hazardous nearshore processes, spectral wave models, which exclude IG-wave dynamics, are often used in the design and assessment of coastal dikes. Consequently, the safety of these structures in environments where IG waves dominate remains uncertain. Here, we combine physical and numerical modeling to: (1) assess the influence of various offshore, foreshore, and dike slope conditions on the dominance of IG waves over those at sea and swell (SS) frequencies; and (2) develop a predictive model for the relative magnitude of IG waves, defined as the ratio of the IG-to-SS-wave height at the dike toe. Findings show that higher, directionally narrow-banded incident waves; shallower water depths; milder foreshore slopes; reduced vegetated cover; and milder dike slopes promote IG-wave dominance. In addition, the empirical model derived, which captures the combined effect of the varied environmental parameters, allows practitioners to quickly estimate the significance of IG waves at the coast, and may also be combined with spectral wave models to extend their applicability to areas where IG waves contribute significantly. |
| 出版日期： | 2020.09-10 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Waterway, Port, Coastal, and Ocean Engineering |
| 卷： | Vol.146 |
| 期： | No.05 |
| 页码： | 04020034 |
相关文献
- Infragravity Waves at a Dissipative Shore with Multiple Bars: Recent Evidence
- Numerical Modeling of Coastal Waves and Nearshore Currents on Adaptive Quadtree Grids
- Formulating Wave Overtopping at Vertical and Sloping Structures with Shallow Foreshores Using Deep-Water Wave Characteristics
- Boussinesq-Type Modeling of Low-Frequency Wave Motions at Marina di Carrara
- Mini-Tsunami Made by Ship Moving Across a Depth Change
- Wave Propagation into Complex Coastal Systems and the Role of Nonlinear Interactions
检索历史
应用推荐
