Journal
JOURNAL OF FLUID MECHANICS
Volume 773, Issue -, Pages -Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jfm.2015.252
Keywords
geophysical and geological flows; internal waves; ocean processes
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Funding
- UK Natural Environment Research Council [NE/J022012/1]
- NERC [NE/J022012/1] Funding Source: UKRI
- Natural Environment Research Council [NE/J022012/1] Funding Source: researchfish
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An overlooked conservation law for near-inertial waves (NIWs) 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 dins 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 NIWs confirm this interpretation and elucidate the influence of the strength of the background flow relative to the dispersion.
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