Year: 2025
Type: article
Abstract: In oceans, multiple inertia-gravity waves often coexist in a region. We study the stability of two coexisting plane inertia-gravity waves, with the same frequencies and wavevector norms. Specifically, we explore the decay of two primary waves through triadic resonant instabilities in cases where two primary waves have a common secondary wave, and this results in a 5-wave system composed of two different triads. We show that 5-wave systems are the dominant instabilities with higher growth rates than standard triads for latitudes greater than 9 degrees.
Source: Physical Review Fluids
Authors: Saranraj Gururaj, Anirban Guha
Institution: University of Dundee
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4408927760