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Deciphering the role of small-scale inhomogeneity on geophysical flow structuration: a stochastic approach
An important open question in fluid dynamics concerns the effect of smallscales in structuring a fluid flow. In oceanic or atmospheric flows, this is aptly captured in wave-current interactions through the study of the wellknown Langmuir secondary circulation. Such wave-current interactions are described by the Craik-Leibovich system, in which the action of a wave induced velocity, the Stokes drift, produces a so called “vortex force” that causes streaking in the flow. In this work, we show that these results can be generalized as a generic effect of the spatial inhomogeneity of the statistical properties of the small-scale flow components. As demonstrated, this is well captured through a stochastic representation of the flow.
Keyword(s)
Langmuir circulation, Baroclinic models, General circulation models, Stochastic models, Oscillations
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File | Pages | Size | Access | |
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Publisher's official version | 52 | 1 Mo |