On the Dynamics of the Auroral Ionosphere during the Breakup of a Substorm.
Final rept. 28 Jan 83-31 Aug 86,
NORTHEASTERN UNIV BOSTON MA
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The research investigation described here concentrated on several dynamic features of substorm evolution during its breakup phase. More specifically, we focussed upon the development of a model for the propagation of the Westward Travelling Surge WTS as seen from the viewpoint of an active ionosphere. We also considered a mechanism for the generation of pi2 pulsations. An important feature of our approach is the natural coupling which exists between the WTS motion and the frequency spectrum of the Pi2 modes. Thus, our theory predicts the correlation of Pi2 waveforms to substorm onsets. This correlation seems to be a reasonable one in light of recent observations of substorm morphology. Keywords Magnetic storms Aurorae.
- Atmospheric Physics