From research on stratospheric dynamics there has emerged what might prove to be some useful fresh ideas about the problem of water-wave generation by wind. As pointed out in an earlier contribution (1993), water waves can be systematically amplified by two irreversible, ratchet-like mechanisms that depend on spatio-temporal inhomogeneities, such as wind gustiness and wave groupiness. Neither m...

The breaking of a detailed balance in fluids through Coriolis forces or odd-viscous stresses has profound effects on the dynamics surface waves. Here we explore both weakly and strongly nonlinear waves three-dimensional fluid with vertical odd viscosity without effect. Our model describes free shallow composed nearly vortex filaments, which all stand perpendicular to surface. We find that this ...

The influence of an underlying current on three-wave interactions of capillary water waves is studied. The fact that in irrotational flow resonant three-wave interactions are not possible can be invalidated by the presence of an underlying current of constant non-zero vorticity. We show that: 1) wave trains in flows with constant non-zero vorticity are possible only for two-dimensional flows, 2...