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.

_J_____________I______________I_____________ I______________I--------------1--------------1--------------1--------------1-------------1--------------1----------- 18 21 00 03 UT HOURS Pig. 2. C o n n e c t i o n between auroral torc hes and geomagnetic Ps6 p u l s a t i ons. The upper panel: drawings fr o m a ll-sky frames of five torches drifting above Loparskaya station, the photometer rec o r d i n g is shown lower. The nor- jnal magnetograms w i t h Ps6 pulsations are g i v e n at the bo t t o m panel. The in t e r v a l s of torches passage is shown b y arrows. triangulation me t h o d o n the basis of data f r o m two observational points: Loparskaya ( r'=64.1°. Л'«=114.4°) and A p a t i t y ( 'f =63.4°> Л'=114.1°). Pig. 4 presents the m a p s of sequential p o sitions of boundaries of the n o n p u l sating band of the t o r c h w i t h one minute interval. The eastward drift of the t o r c h is clearly seen. The height of external b oundary of the torch cha ng e s i n the range 100-115 k m co r r e s p onding to characteristic energy 4- 10 ke V of precipitating electron f l u x /5/. The height of the internal b o u n d a r y of n o n p u lsating band is h i g h e r th a n 115 k m (less than 4 k e V i So the outward b oundary of the torch i s formed b y harder particles. D i s c u s s i o n . In conditions w h e n torches are absent diffuse aurora u s u a l l y represents a plane ba n d of several kilometers wide. In most cases it has clear n o r t h e r n as well as southern boundaries. Equatorward of this b a n d at h i g h geomagnetic a c t i v i t y a pulsating luminosity is observed on the weaker background. T h e y lo o k like waves along the equa torial b oundary of a n o n p u lзаting 21.5700 /. Pig. 3. P h o t ogr aphs of the torch made f r o m TV screen w i t h 20 sec interval (April 1, 1984). 89