2012/04/01 by Sylvain Joubaud, James Munroe, Philippe Odier +1 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Energy transfer #Instability #Ionosphere and magnetosphere dynamics #Mixing (physics) #Ocean Waves and Remote Sensing #Oceanographic and Atmospheric Processes #Parametric statistics #Stratified flow #Stratified flows #Subharmonic #physics.class-ph #physics.flu-dyn
paper · pdf · doi:10.1063/1.4706183
published as Physics of Fluids 24, 041703 (2012)
openalex publication_date 2012/04/01 · arxiv created 2012/04/27 · arxiv updated 2015/06/04 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
Internal gravity waves contribute to fluid mixing and energy transport, not only in oceans but also in the atmosphere and in astrophysical bodies. An efficient way to transfer energy from large scale to smaller scale is the parametric subharmonic instability. We provide here the first experimental measurement of the growth rate of this instability. We make careful and quantitative comparisons with theoretical predictions for propagating vertical modes in laboratory experiments.