Figure 2. Comparison of electron loss
rates (a) and electron density (b), computed at 70 km for the
proton events of 13 August 1989 (white signs) and 23 October 1989
(black signs): 1-4, loss rates for the first event equal to
k1[ O2]2,
k2
[ O3],
adi
Ni+,
accordingly, and the total
losses, 5-7, are the same for the second event; 8 and 9, electron
density variation for the first and second event, accordingly.