Полярные геомагнитные возмущения и связанные с ними явления : материалы международного симпозиума «Полярные геомагнитные явления», 25-31 мая 1986 г., Суздаль / Междунар. геодез. и геофиз. союз, междунар. ассоциация геомагнетизма и аэрономии, АН СССР, КНЦ, ПГИ. – Апатиты : [б. и.], 1989.

APRIL 1, 1934 Pig. 4. The тара(in geo g r a p h ical coordinates) of sequential positions of the boundaries of non- pulsating re g i o n of the torch (April 1,1984). Solid lines show the altitudes below 110 km, short dashes - 110-130 km, long ones - greater than 130 km. GE O GRAFIC LQNTITUDE band but ne v e r penetrate into it. The direction of expansion of the waves may be different fr o m one pulsation to another and f r o m east to weat and vice versa. They m a y also ha v e noticeable longi tudinal component. The v e locity of expansion m a y r e a c h 20 km/sec and the peri od of pulsations have the range of 5-30 sec. Fur t h e r to eq u a t o r the bac k g r o u n d luminosity becomes w e a k e r and pulsations g a i n more stable forms keeping fr o m pulsation to pulsation. W h e n there is a torch like ind u l a t i o n of diffuse band then a p p arently the nearby drift shells lo c a t e d equatorward al o n g w h i c h the wave-like p recipitation causing p a lsatlng lum i n o s i t y deformates also. Thia create effect of flowing in waves of lum i n o s i t y to the inner r e g i o n of the torch. Pulsating auroral patches develop in the fibres of the cold plasma l ocated outside the plasmo- sphere but apparently they have a plasmosp heric origin /6/. T h e n the magnetic activity is h i g h the remnant layer of the plasma sheet closely sidee wi t h the plaamosphere. T h e n the diffuse stable lum i n o s i t y borders up or partially over laps the r e g i o n of p u lsating auroral patches. In the latter case the patches become unstable and w h e n the development of the torches takes place the p u l s ating l u m i nosity is obs e r v e d inside them. Thus the patches inaide the torches are an a c c o m pany i ng p h e n o m e n o n and they are not an attribute of the torches. C o n c l u s i o n s . 1) The height is lowest on the external bo r d e r of the torches hence it ia f o r m e d by h a r d e r particles. 2) Short period luminosity pulsations inside the torches are acc o m p a n y i n g phenomena an d th e y are not an attribute of the torch. 3) There ia a clear boundary b etween nonpuleating diffuse aurora an d the r e g i o n where wave-l i ke auroral pulsations take place. 90