Two point third order correlation functions for quasi-geostrophic   turbulence: Kolmogorov-Landau approach
  We use the more intuitive approach due to Kolmogorov (and subsequently, Landau in his text on fluid dynamics) to calculate some third-order structure functions for quasi-geostrophic turbulence for the forward cascade of pseudo-potential enstrophy and the inverse energy cascade in quasi-geostrophic turbulence. 
Sagar Chakraborty