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Nonlinear wave evolution with data-driven breaking
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DOI：10.1038/s41467-022-30025-z.png)
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Abstract
En 中文
Wave breaking is the main mechanism that dissipates energy input into ocean waves by wind and transferred across the spectrum by nonlinearity. It determines the properties of a sea state and plays a crucial role in ocean-atmosphere interaction, ocean pollution, and rogue waves. Owing to its turbulent nature, wave breaking remains too computationally demanding to solve using direct numerical simulations except in simple, short-duration circumstances. To overcome this challenge, we present a blended machine learning framework in which a physics-based nonlinear evolution model for deep-water, non-breaking waves and a recurrent neural network are combined to predict the evolution of breaking waves. We use wave tank measurements rather than simulations to provide training data and use a long short-term memory neural network to apply a finite-domain correction to the evolution model. Our blended machine learning framework gives excellent predictions of breaking and its effects on wave evolution, including for external data. Wave breaking mechanisms relevant for modelling of ocean-atmosphere interaction and rogue waves, remain computationally challenging. The authors propose a machine learning framework for prediction of breaking and its effects on wave evolution that can be applied for forecasting of real world sea states.
Keywords:
DEEP-WATER
SCHRODINGER-EQUATION
FREQUENCY DOWNSHIFT
NEURAL-NETWORKS
SURFACE-WAVES
DISSIPATION
INSTABILITY
MODULATION
TURBULENCE
PHYSICS
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15.7
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91.2W
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