Geoscience Reference
In-Depth Information
Fig. 5.5
Oscillogram of luminescence of all discharge areas of elf and sprites (Barrington-
Leigh
2000
). Reproduced with kind permission
180
90
0
90
180
60
30
0
30
60
Fig. 5.6
Observations of flashes of UV and IR radiations on the night side from “Tatyana-2”
(Sadovnichiy et al.
2011
; Veden'kin et al.
2011
) Reproduced with kind permission
Thus, many questions are left open:
How does the initiation of ionization processes in the elves occur?
Why are large-scale formations on their bottom border arising?
What is the mechanism of the filamentary discharge initiation in the sprites?
Why does sprite development occur during a time that essentially exceeds the
duration of lightning discharges, etc.?
For the answer to such questions, it was necessary
To find out all the dynamics of electric and electromagnetic fields behavior during
a thunderstorm
Based on experience of laboratory discharge observations in similar conditions,
to carry out numerical calculations of ionization processes in the mesosphere
