CRITICAL LAYERS AND PROTOPLANETARY DISK TURBULENCE

@article{Umurhan2016CRITICALLA,
  title={CRITICAL LAYERS AND PROTOPLANETARY DISK TURBULENCE},
  author={Orkan M. Umurhan and Karim Shariff and Jeffrey N. Cuzzi},
  journal={The Astrophysical Journal},
  year={2016},
  volume={830}
}
A linear analysis of the zombie vortex instability (ZVI) is performed in a stratified shearing sheet setting for three model barotropic shear flows. The linear analysis is done by utilizing a Green’s function formulation to resolve the critical layers of the associated normal-mode problem. The instability is the result of a resonant interaction between a Rossby wave and a gravity wave that we refer to as Z-modes. The associated critical layer is the location where the Doppler-shifted frequency… 

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