PROBLEMS OF GEOCOSMOS

Proceedings of the 7th International Conference "Problems of Geocosmos" (St. Petersburg, Russia, 26-30 May 2008)
More detailed example of electron precipitations observed at high latitudes at this time in the
southern polar region during 20 September is presented in Fig. 2 (top panel). It is possible to see that the
next southern polar cap (1.5 hour later), shown at he bottom panel, does not contain any electron
precipitations. The integral flux of electrons with the energies > 500 keV (light blue) is presented in
addition to 300-600 (dark blue) and 0.6-1.5 MeV (lilac) in Fig. 2. We can see that for al three energy
ranges the electron precipitations in polar regions are clearly selected.
Figure 2. The example of intensive electron precipitation at high latitudes during 20 September,
2003 (top panel) and the next crossing of polar region (1.5 hour later) without any electron
precipitations.
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