Predicting ocean rogue waves from point measurements: An experimental study for unidirectional waves.

Area of Science:

• Fluid dynamics
• Nonlinear physics
• Wave phenomena

Background:

• Rogue waves are extreme, localized wave events observed in various physical systems.
• Predicting rogue wave emergence is crucial for safety and operational efficiency in fields like marine engineering.

Purpose of the Study:

• To experimentally validate a reduced-order precursor tool for predicting rogue wave events.
• To assess the tool's effectiveness in forecasting extreme events caused by spatially localized modulation instability.

Main Methods:

• Laboratory experiments were conducted in two distinct water wave facilities.
• Unidirectional water waves were used to study rogue wave formation.
• A recently developed rogue-wave reduced-order precursor tool was applied to quantify prediction potentials.

Main Results:

• The experimental tests demonstrated that the precursor tool accurately predicts the deterministic and spontaneous emergence of extreme events.
• The tool's predictions were consistent across both water wave facilities.
• The study confirms the efficacy of the developed scheme for early-stage rogue wave detection.

Conclusions:

• The validated precursor tool shows significant potential for early detection of extreme wave events.
• The interdisciplinary approach suggests applicability to other nonlinear dispersive media, including optics, plasma, and solids.
• This research advances the understanding and prediction capabilities for rogue waves.