Figure 4From: Investigating the particle precipitation of a moving cusp aurora using simultaneous observations from the ground and spaceParticle data from DMSP F18 near the electron precipitation with a very high flux. The top panel (a) represents the normalized ratio of the integral ion number flux to the integral electron number flux in a logarithmic scale. The format of the bottom two panels (b,c) is the same as that of the bottom two panels of Figure 3. The six vertical lines in each panel indicate the boundaries between different particle features.Back to article page