Resonant Triad Instability in Stratified Fluids

Abstract

Internal gravity waves contribute to fluid mixing and energy transport, not only in oceans but also in the atmosphere and in astrophysical bodies. We provide here the first experimental measurement of the growth rate of a resonant triad instability (also called parametric subharmonic instability) transferring energy to smaller scales where it is dissipated. We make careful and quantitative comparisons with theoretical predictions for propagating vertical modes in laboratory experiments.

References in corpus (2)

• A novel internal waves generator
• New wave generation

Cited by in corpus (24)

• Instabilities of Internal Gravity Wave Beams
• Experimental study of parametric subharmonic instability for internal waves
• Non-linear fate of internal wave attractors
• Internal wave attractors examined using laboratory experiments and 3D numerical simulations
• Direct numerical simulations of an inertial wave attractor in linear and nonlinear regimes
• Internal wave attractors: different scenarios of instability
• Experimental observation of a strong mean flow induced by internal gravity waves
• Shortcut to geostrophy in wave-driven rotating turbulence: the quartetic instability
• Experimental study of three-wave interactions among capillary-gravity surface waves
• Mixing by internal waves quantified using combined PIV/PLIF technique
• Observation of resonant interactions among surface gravity waves
• Scale effects in internal wave attractors
• Internal wave turbulence in a stratified fluid with and without eigenmodes of the experimental domain
• Three-dimensionality of the triadic resonance instability of a plane inertial wave
• Excitation and resonant enhancement of axisymmetric internal wave modes
• Mixing and formation of layers by internal wave forcing
• Nonlinear internal wave penetration via parametric subharmonic instability
• The long view of triadic resonance instability in finite-width internal gravity wave beams
• Forced three-wave interactions of capillary-gravity surface waves
• Experimental self-generation of axisymmetric internal wave super-harmonics
• Triadic resonant instability in confined and unconfined axisymmetric geometries
• Turbulent spectrum of 2D internal gravity waves
• Generation of weakly nonlinear turbulence of internal gravity waves in the Coriolis facility
• Explosive instability of dust settling in a protoplanetary disc