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PSI to turbulence during internal wave beam refraction through the upper ocean pycnocline

Gayen, B.; Sarkar, S.


A numerical study based on large eddy simulation (LES) is performed to investigate the nonlinear interaction of a semidiurnal (M2) internal wave beam with an upper ocean pycnocline. During refraction through the pycnocline, the wave beam undergoes parametric subharmonic instability (PSI) with formation of waves with (1/2)M2 frequency. The three-dimensional LES enables new results that quantify the route to turbulence through PSI. The subharmonic waves generated from PSI have an order of...[Show more]

CollectionsANU Research Publications
Date published: 2014-12-16
Type: Journal article
Source: Geophysical Research Letters
DOI: 10.1002/2014GL061226


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