Experiments on wind-perturbed rogue wave hydrodynamics using the Peregrine breather model

TL;DR

This study experimentally investigates how wind influences the evolution of Peregrine breather solutions, a model for oceanic rogue waves, demonstrating their persistence under strong wind conditions and potential for rogue wave prediction.

Contribution

It provides the first experimental analysis of wind-perturbed Peregrine breathers, showing their robustness and spectral characteristics in chaotic wind-driven water wave fields.

Findings

Peregrine breather dynamics persist despite strong wind forcing.

Characteristic spectrum remains identifiable at high wind velocities.

Breather features can aid in rogue wave prediction under wind influence.

Abstract

Being considered as a prototype for description of oceanic rogue waves (RWs), the Peregrine breather solution of the nonlinear Schr\"odinger equation (NLS) has been recently observed and intensely investigated experimentally in particular within the context of water waves. Here, we report the experimental results showing the evolution of the Peregrine solution in the presence of wind forcing in the direction of wave propagation. The results show the persistence of the breather evolution dynamics even in the presence of strong wind and chaotic wave field generated by it. Furthermore, we have shown that characteristic spectrum of the Peregrine breather persists even at the highest values of the generated wind velocities thus making it a viable characteristic for prediction of rogue waves.