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Abstract
An overlooked conservation law for near-inertial waves propagating in a steady background flow provides a new perspective on the concentration of these waves in regions of anticyclonic vorticity. The conservation law implies that this concentration is a direct consequence of the decrease in spatial scales experienced by an initially homogeneous wave field. Scaling arguments and numerical simulations of a reduced-gravity model of mixed-layer near-inertial waves confirm this interpretation and elucidate the influence of the strength of the background flow relative to the dispersion.
Original language | English |
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Journal | Journal of Fluid Mechanics |
Volume | 773 |
Issue number | R2 |
Early online date | 14 May 2015 |
DOIs | |
Publication status | Published - Jun 2015 |
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