Fig. 3From: Secondary instability generated on the equatorial plasma bubbles wall due to an interaction with midnight brightness wavea Spectrogram obtained from the sequence of 29 “slices” at EPB B4. A white arrow indicates the spectral signature of the oscillations due to the growth of the GDI. b Spectrogram obtained from the sequence of “slices” at EPB B3. The white arrow indicates the spectral signature of the energy cascade due to turbulence generationBack to article page