Substorm recovery phase

• Lasts about one hour
• Plasma sheet recovers.
• Subauroral electric field events occur (see ionospheric troughs)
• Double oval structure forms, and eastward propagating omega bands are seen on the equatorward one
• Pulsating auroras are very typical in the morning sector; also black aurora may be related to the recovery phase.
• Magnetosphere returns into the pre-substorm state
• May also prepare the magnetosphere for the next substorm

References

• Opgenoorth, H. J., M. A. L. Persson, T. I. Pulkkinen, and R. J. Pellinen, The recovery phase of magnetospheric substorms and its association with morning-sector aurora, J. Geophys. Res., 99, 4115-, 1994.

See also:

• Space Physics Text Book of Oulu