论文标题

墙上的墙面哲学

Quasigeostrophy against the wall

论文作者

Venaille, Antoine

论文摘要

海岸是由于沿海地部缓慢捕获的开尔文波和反气旋的较慢的共振而导致连续分层的准真诚方程的经典推导障碍。 [Deremble等人海洋建模2017]提出了准真实性内部和边界层开尔文波动力学之间的耦合模型。我们重新审视该模型的推导,特别关注保护法。我们发现,尽管边界层中存在开尔文波冲击,但准真实性能是保存的。这些冲击的影响是改变潜在涡度的全球分布,从而改变内部流动结构。在这方面,我们表明内部流动的边界区域有一个主动控制。

Coasts are obstructions to the classical derivation of continuously stratified quasigeostrophic equations, due to possible resonances between slow internal coastally trapped Kelvin waves and anticyclones. [Deremble et al Ocean Modelling 2017] proposed a coupled model between a quasigeostrophic interior and boundary layer Kelvin wave dynamics. We revisit the derivation of this model, paying particular attention to conservation laws. We find that quasigeostrophic energy is conserved despite the existence of Kelvin wave shocks in the boundary layer. The effect of those shocks is to change the global distribution of potential vorticity, and, consequently the interior flow structure. In that respect, we show that there is an active control of the boundary region on the interior flow.

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