A Physical Interpretation of the Wind-Wave Instability as Interacting Waves

  title={A Physical Interpretation of the Wind-Wave Instability as Interacting Waves},
  author={Jeffrey R. Carpenter and Anirban Guha and Eyal Heifetz},
  journal={Journal of Physical Oceanography},
AbstractOne mechanism for the growth of ocean surface waves by wind is through a shear instability that was first described by Miles in 1957. A physical interpretation of this wind-wave instability is provided in terms of the interaction of the surface gravity wave with perturbations of vorticity within the critical layer—a near-singularity in the airflow where the background flow speed matches that of the surface gravity wave. This physical interpretation relies on the fact that the vertical… Expand

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