Equatorial ion distributions
Stretched tail field.
Dense plasmasheet
Dipolarization and injections reach geosynchronous.
Auroral onset.
4 OCT 2000 MAINPHASE
Injection complete
Sun contamination
Ions drifts earthward in dipolarization E-field faster than they can be replenished from tail convection field
Flux increase due to conservation of adiabatic invariance
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