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首页> 外文期刊>Journal of Physical Oceanography >Geostrophic Adjustment of an Isolated Diapycnal Mixing Event and Its Implications for Small-Scale Lateral Dispersion
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Geostrophic Adjustment of an Isolated Diapycnal Mixing Event and Its Implications for Small-Scale Lateral Dispersion

机译：孤立的斜向混合事件的地转调节及其对小规模横向弥散的影响

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摘要

In this first of two companion papers, the time-dependent relaxation of an isolated diapycnal mixing event is examined in detail by means of numerical simulations, with an emphasis on the energy budget, particle displacements, and their implications for submesoscale oceanic lateral dispersion. The adjustment and dispersion characteristics are examined as a function of the lateral extent of the event L relative to the Rossby radius of deformation R. The strongest circulations and horizontal displacements occur in the regime R/L ≈ O(1). For short times, less than an inertial period, horizontal displacements are radial. Once the adjustment is completed, displacements become primarily azimuthal and continue to stir fluid over several to tens of inertial periods. The cumulative effect of many such events in terms of the effective lateral dispersion that they induce is examined in the companion paper.
机译：在这两篇伴随论文的第一篇中，通过数值模拟详细研究了孤立的斜向混合事件的时间相关弛豫，重点是能量预算，粒子位移及其对亚中尺度海洋横向弥散的影响。根据事件L的横向范围相对于Rossby变形半径R的函数来检查调节和分散特性。最强的环流和水平位移发生在状态R / L≈O（1）中。对于短时间（小于惯性周期），水平位移是径向的。调整完成后，位移主要变为方位角，并在几到几十个惯性周期内继续搅拌流体。在伴随论文中研究了许多此类事件在引起的有效横向分散方面的累积效应。

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