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首页> 外文期刊>Journal of Physical Oceanography >Meddy-Seamount Interactions: Implications for the Mediterranean Salt Tongue
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Meddy-Seamount Interactions: Implications for the Mediterranean Salt Tongue

机译：Meddy-Seamount相互作用：对地中海盐舌的启示

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A quasigeostrophic point vortex numerical model is used to explore interactions of eddies and seamounts. The ultimate objective of this study is to assess the role of meddy-seamount interaction as an input to Mediterranean salt tongue maintenance. Secondary objectives are to clarify the dynamics of meddy-seamount interaction, The results suggest that meddies survive seamount collisions with 60%-70% of their initial cores remaining intact as coherent vortices. Given observed formation rates, it appears meddles, in their interactions with seamounts, inject between one-quarter and one-half of the salt anomaly necessary to sustain the Mediterranean salt tongue. Other considerations suggest the anomalous mass flux by meddies is comparable to that due to the mean flow. In summary, meddies are important to the maintenance of the salt tongue, although other mechanisms are needed. Coherent vortex transport, of which meddies are one example, is a mesoscale process not well described by the downgradient mixing algorithms normally employed in general circulation models. More sophisticated mesoscale models are thus suggested by this study. In particular, survival by meddies of collisions with seamounts emerges as a potentially important limiting effect on the Mediterranean salt tongue. This effect has climatically significant implications for ocean simulations.
机译：利用准地转点涡旋数值模型探讨涡旋与海山的相互作用。这项研究的最终目的是评估药物-海山相互作用对地中海盐舌维持的作用。次要目标是阐明药物与海山相互作用的动力学。结果表明，药物在海山碰撞中幸存下来，其初始核心的60％-70％作为相干涡旋完好无损。给定观测到的形成速率，在与海山的相互作用中似乎出现了干扰，注入了维持地中海盐舌所需的四分之一到二分之一的盐异常。其他考虑因素表明，由于平均流量，药物引起的异常质量通量可与之相比。总而言之，尽管维持其他机制，药物对于维持舌头也很重要。相干涡旋输运（其中药物是一个例子）是一种中尺度过程，通常在一般循环模型中通常采用的降梯度混合算法无法很好地描述这种过程。因此，这项研究提出了更复杂的中尺度模型。特别是，与海山相撞的药物的生存已成为对地中海盐舌的潜在重要限制作用。这种影响对海洋模拟具有气候意义。

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