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首页> 外文期刊>Estuarine Coastal and Shelf Science >Observation of infragravity wave processes near the coastal cliffs of Chabahar (Gulf of Oman)
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Observation of infragravity wave processes near the coastal cliffs of Chabahar (Gulf of Oman)

机译：Chabahar沿海悬崖附近的Intravavity波进程观察（阿曼湾）

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摘要

This study analyzed the characteristics of infragravity waves (hereafter IGWs) based on field observations collected near the plunging cliffs of Chabahar bay, Iran. Observations were made near Chabahar city during the summer monsoon season of 2018. The wave climate included two different durations of sea and swell predominance, with a maximum wave height reaching 2.5 m. Concurrent with the duration of the sea predominance, the ratio of IGW to swell wave height had an insensitive fluctuation against tidal variations, while this ratio had a strong negative correlation with tidal level during the high swell condition. The investigation of directional wave energy distribution revealed two correlated trends of shoreward and seaward IGWs with the wave regime. Larger values of the IGW reflection coefficients were observed during high sea wave conditions compared with high swell conditions. The IGW reflection coefficients decreased against swell energy growth with a logarithmic trend. The bound IGW energy fraction was studied using bispectral analysis. It is demonstrated that the maximum values of this parameter corresponded to high swell waves observed within low ebbs of the spring tide. The insignificant values of bound IGW energy fraction and the non-extended surf-zone revealed that most of the released IGWs originated from offshore and intermediate water depths. In addition, it was revealed that the inverse tidal trend of normalized IGW by swell height was due to bound IGW enhancement during ebb periods as a result of the nonlinear coupling of swell waves.
机译：本研究分析了基于Chabahar Bay，伊朗的困扰悬崖附近收集的田间观测的Intravavity波（以下ogws）的特征。在2018年夏季季风季节Chabahar City附近观察。波浪气候包括两种不同的海洋持续时间和膨胀优势，最大波浪高度达到2.5米。随着海洋持续时间的同时，IGW与膨胀波高的比率对潮汐变化具有不敏感的波动，而该比率在高膨胀条件下具有与潮水平的强负相关性。定向波能量分布的调查揭示了波浪制度的两极和海底IGW的两种相关趋势。与高膨胀条件相比，在高海波条件下观察到IGW反射系数的较大值。 IGW反射系数随着对数趋势的膨胀能量增长降低。使用双光谱分析研究结合的IgW能量分数。结果证明，该参数的最大值对应于在春季潮汐的低潮中观察到的高膨胀波。结合IGW能量分数和非扩展冲浪区的微不足道的值表明，大多数释放的IGW源自海洋和中间水深。此外，据透露，由于膨胀波的非线性耦合，通过膨胀高度的归一化IgW的逆转潮汐趋势是由于在膨胀波的非线性耦合期间在退潮期间的结合IGW增强。

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