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首页> 外文期刊>Estuarine Coastal and Shelf Science >Longshore wave variability along non-straight coastlines
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Longshore wave variability along non-straight coastlines

机译：沿非直线海岸线的近岸波变化性

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摘要

The present paper demonstrates the role of wave direction and shoreline alignment on wave attenuation along a non-straight coastline. A numerical model was calibrated against measured data at six locations along a non-straight coastline and a hybrid method composed by wave case selection/simulation and nearshore time series reconstruction was applied to transfer 20 years of wave time series from offshore to nearshore. The results highlight the importance of the orientation of the coastline to different degrees of wave exposure to the wave attenuation process. The varying orientation of the coastline, at each of the six sites, resulted in non-uniform wave attenuation alongshore under different wave directions. The extreme wave conditions at each of the sites were also shown to vary significantly along the coast, e.g. similar to 18% alongshore (at -17 m Australian Height Datum - AHD) and as much as 34% from offshore (-70 m AHD) to nearshore (-17 m AHD). The results presented here reinforce the importance of assessing variations in wave attenuation along the coast as opposed to simply using the closest offshore wave dataset available. Improved understanding of nearshore wave attenuation along non-straight coastlines aids in better informing future coastal protection and management strategies.
机译：本文证明了波浪方向和海岸线对准对沿非直线海岸线的波浪衰减的作用。针对非直线海岸线上六个位置的测量数据对数值模型进行了校准，并采用了由波例选择/模拟和近岸时间序列重构构成的混合方法，将20年的波时间序列从近海转移到近岸。结果突出了海岸线取向对波浪衰减过程中不同程度的波浪暴露的重要性。在六个地点中的每个地点，海岸线的方向都不同，导致沿不同波向的沿岸波浪衰减不均匀。每个地点的极端波浪条件也显示出沿海岸的显着变化，例如相当于近岸的18％（澳大利亚高度基准面-17 m，AHD），近岸（-70 m AHD）到近岸（-17 m AHD）的比例高达34％。与简单地使用最接近的近海海浪数据集相反，此处提出的结果强调了评估沿海岸的海浪衰减变化的重要性。对非直线海岸线沿岸波浪衰减的更好理解有助于更好地为未来的海岸保护和管理策略提供信息。

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