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The Spatial Distribution of Ocean Waves in Tropical Cyclones

机译：热带气旋海浪的空间分布

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摘要

The spatial structure of both the wind and wave fields within tropical cyclones is investigated using two large databases. The first of these was compiled from global overpasses of tropical cyclones by satellite altimeters. The second dataset consists of an extensive collection of North American buoy measurements during the passage of tropical cyclones (hurricanes). The combined datasets confirm the vortex structure of the tropical cyclone wind field with the strongest winds to the right (Northern Hemisphere) of the storm. The wave field largely mirrors the wind field but with greater right-left asymmetry that results from the extended fetch to the right of the translating tropical cyclone. The extensive in situ buoy database confirms previous studies indicating that the one-dimensional spectra are generally unimodal. The directional spectra are, however, directionally skewed, consisting of remotely generated waves radiating out from the center of the storm and locally generated wind sea. The one-dimensional wave spectra have many similarities to fetch-limited cases, although for a given peak frequency the spectra contain less energy than for a fetch-limited case. This result is consistent with the fact that much of the wave field is dominated by remotely generated waves.
机译：使用两个大型数据库来研究热带气旋中风和波场的空间结构。其中的第一个由卫星高度计从热带气旋的全球立交网编制。第二个数据集包括在热带气旋（飓风）通过期间广泛收集北美浮标测量。组合的数据集确认了热带旋风风田的涡旋结构与风暴的右侧（北半球）的最强烈风。波浪场在很大程度上反映了风力场，而是具有更大的右左不对称，从而从延伸的加入到翻译的热带旋风器右侧产生。在原位浮标数据库中广泛证实了以前的研究表明一维光谱通常是单峰的。然而，定向光谱是方向倾斜的，由远程产生的波从暴风雨的中心和局部产生的风水辐射出来。一维波谱具有许多与获取限制情况的相似之处，尽管对于给定的峰值频率，光谱包含比获取限制性的能量更少。该结果与大部分波场由远程产生的波导地位的事实一致。

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  • 来源
    《Journal of Physical Oceanography》 |2020年第8期|2123-2139|共17页
  • 作者

    Tamizi Ali; Young Ian R.;

  • 作者单位

    Univ Melbourne Dept Infrastruct Engn Melbourne Vic Australia;

    Univ Melbourne Dept Infrastruct Engn Melbourne Vic Australia;

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