3 papers
physics.flu-dyn2026
Frequency spreading of internal wave energy by balanced flows in two dimensions
Nicholas DeFilippis, Oliver Bühler, K. Shafer Smith
Interactions between inertia-gravity waves and balanced flows lead to a spectral diffusion of wave action. Prior work has established that this diffusion is weak across constant fr…
physics.ao-ph2025
Emergent vorticity asymmetry of one and two-layer shallow water system captured by a next-order balanced model
Ryan Shìjié Dù, K. Shafer Smith
The turbulent evolution of the shallow water system exhibits asymmetry in vorticity. This emergent phenomenon can be classified as "balanced", that is, it is not due to the inertia…
physics.flu-dyn2025
Next-order balanced model captures submesoscale physics and statistics
Ryan Shìjié Dù, K. Shafer Smith, Oliver Bühler
Using nonlinear simulations in two settings, we demonstrate that QG, a potential-vorticity based next-order-in-Rossby balanced model, captures several aspects of ocea…