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Spatial Structure of Turbulent Mixing in the Northwestern Pacific Ocean

机译：西北太平洋湍流混合的空间结构

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摘要

Turbulent mixing in the northwestern Pacific Ocean is estimated using the Gregg-Henyey-Polzin scaling and Thorpe-scale methods. The data sources are the hydrographic observations during October and November 2005. The results reveal clear spatial patterns of turbulent mixing in the study area. High-level dif-fusivity on the order of 10~(-3) m~2 s~(-1) or larger is found within the western boundary region, where the Kuroshio flows northward. The width covered by this prominent diffusivity shows an increase from 12° to 18°N. The horizontal distribution of depth-averaged diffusivity in the top 500 m shows enhanced mixing with diffusivity of 6 × 10~(-3)m~2s~(-1) south of 9°N where the Mindanao Eddy remains a quasi-permanent feature. These two distinct patterns of diffusivity distribution suggest that the Kuroshio and the Mindanao Eddy are likely responsible for the elevated turbulent mixing in the study area.
机译：使用Gregg-Henyey-Polzin缩放和Thorpe缩放方法估计了西北太平洋的湍流混合。数据来源是2005年10月至11月的水文观测。结果揭示了研究区域内湍流混合的清晰空间格局。在黑潮向北流动的西边界区域内，发现了约10〜（-3）m〜2 s〜（-1）或更高级别的高扩散性。这种突出的扩散率所覆盖的宽度显示出从12°N增加到18°N。顶部500 m处的平均深度扩散率的水平分布显示出增强的混合，在9°N以南6×10〜（-3）m〜2s〜（-1）的扩散率，棉兰老岛涡仍然是准永久特征。这两种不同的扩散率分布模式表明，黑潮和棉兰老岛涡流很可能是造成研究区湍流混合增加的原因。

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  • 来源
    《Journal of Physical Oceanography》 |2014年第8期|2235-2247|共13页
  • 作者

    Qingxuan Yang; Wei Zhao; Min Li; Jiwei Tian;

  • 作者单位

    Physical Oceanography Laboratory, Ocean University of China, Qingdao, China;

    Physical Oceanography Laboratory, Ocean University of China, Qingdao, China;

    Physical Oceanography Laboratory, Ocean University of China, Qingdao, China;

    No.238 Songling Road, Physical Oceanography Laboratory, Ocean University of China, Qingdao, China;

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