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首页> 外文期刊>Journal of Physical Oceanography >Turbulent Kinetic Energy Dissipation in Barrow Canyon
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Turbulent Kinetic Energy Dissipation in Barrow Canyon

机译:巴罗峡谷湍流动能耗散

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摘要

Pacific Water flows across the shallow Chukchi Sea before reaching the Arctic Ocean, where it is a source of heat, freshwater, nutrients, and carbon. A substantial portion of Pacific Water is routed through Barrow Canyon, located in the northeast corner of the Chukchi. Barrow Canyon is a region of complex geometry and forcing where a variety of water masses have been observed to coexist. These factors contribute to a dynamic physical environment, with the potential for significant water mass transformation. The measurements of turbulent kinetic energy dissipation presented here indicate diapycnal mixing is important in the upper canyon. Elevated dissipation rates were observed near the pycnocline, effectively mixing winter and summer water masses, as well as within the bottom boundary layer. The slopes of shear/stratification layers, combined with analysis of rotary spectra, suggest that near-inertial wave activity may be important in modulating dissipation near the bottom. Because the canyon is known to be a hotspot of productivity with an active benthic community, mixing may be an important factor in maintenance of the biological environment.
机译:太平洋水流过楚科奇浅海,然后到达北冰洋,这里是热,淡水,营养和碳的来源。太平洋水的大部分流经位于楚科奇(Zukchi)东北角的巴罗峡谷(Barrow Canyon)。巴罗峡谷是一个几何形状复杂且受强迫的区域,已观察到多种水团共存。这些因素有助于形成动态的物理环境,并可能导致大量的水质转化。此处显示的湍动能耗散的测量结果表明,在上峡谷中,辉岩混合非常重要。在比多菌灵附近观察到了较高的消散率,有效地混合了冬季和夏季的水团以及底部边界层。剪切/分层的斜率,结合对旋转光谱的分析,表明近惯性波活动可能对调节底部附近的消散很重要。由于峡谷是活跃的底栖生物群落的生产力热点,因此混合可能是维持生物环境的重要因素。

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  • 来源
    《Journal of Physical Oceanography》 |2012年第6期|p.1012-1021|共10页
  • 作者

    E. L. Shroyer;

  • 作者单位

    Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, College of Earth, Ocean, and AtmosphericSciences, Oregon State University, Corvallis, Oregon,Emily Shroyer, College of Earth,Ocean, and Atmospheric Sciences, Oregon State University, 104CEO AS Administration Building, Corvallis, OR 97331;

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