Figure 7
From: Multi-spectral optical imaging of the spatiotemporal dynamics of ionospheric intermittent turbulence

Nonlinear analysis of ionospheric intermittent turbulence on 28 September 2002. Kurtosis and phase coherence index as a function of the spatial scale r, and scaling exponents ζ(p) of the pth-order structure function for two-point differences of the emission intensity (δI) in the North-South direction (black) and East-West (red) direction of the: (a,b,c) OI 630.0 nm emission at 21:48:08 LT of Fig. 1b; (d,e,f) OI 777.4 nm emission at 21:46:04 LT of Fig. 1d. The Kolmogorov K41 self-similar scaling is indicated by a dashed line in (c,f).