High-Latitude Electrodynamics - The Earth's Ionosphere: Plasma Physics and Electrodynamics - page 393

12

60°

70°

80°

Dusk 18 S 06 Dawn

24

Figure 8.5 Ionospheric flow paths at high latitudes including the effect of corotation of
the plasma with the earth. The diagram is fixed with respect to the sun.

Sun

Magnetopause

Corotating
plasmasphere

Plasma
sheet

Figure 8.6 Contours of plasma flow velocity and equipotentials in the magnetic equato-
rial plane. The concentric circles indicate corotating plasma deep in the magnetosphere.
The diagram is fixed with respect to the sun.