Координированные наблюдения авроральных явлений 1-2 декабря и 11-12 декабря 1977 г. на Кольском полуострове и в Финляндии / С. А. Черноус, Н. И. Федорова, Г. А. Логинов и др. ; Акад. наук СССР, Кол. фил. им. С. М. Кирова, Поляр. геофиз. ин-т. – Препр. ПГИ-79-3. - Апатиты : [б. и.], 1979. - 31 с.

Figure captions Fig.1 Fig. 2 Fig.3 Fig.4 Fig. 5 Fig. 6 Fig.7 Fig.8 Map of the observing sites and instruments of this study. All-sky pictures of aurora. a) Development of the red auroral corona at Muonio 04.52-04.41 UT. b) Aurora at Loparskaya, 1-3- red aurora, 4-6 - aurora between the appearance of the red coronas The morning spectra of aurora at Dec, 2, 1977. a) In the early morning sector at 01.30 UT (the usual green aurora). b) In the late morning sector at 04.30 UT (the abnormal red aurora). Spectral and photometric data and magnetic pulsa­ tions at Dec.1/2 and 11/12, 1977» Variations of horizontal components (H) in the Fi­ nnish (by the courtesy of H.Maurer) and Soviet chains of magnetometers. a) Dec. 1/2, 1977- b) Dec. 11/12, 1977. Magnetic data for the morning of Dec. 2, 1977* top-the electrojet azimuth and magnetic deviations at Sodankyla, middle-magnetic deviations in the Soviet stations, bottom-the electrojet location by Sodankyla and Lovozero data. Variations in absorption recorded by the Finnish chain of riometers. a) Dec.1/2, 1977. b) Dec. 11/12 1977. Variations of hardness characteristics of precipi­ tating particles on Dec. 1/2 and 11/12 1977. a) Intensity ratio of 6300 a and 5577 & emissions b) Frequency dependence according to riometer data of Finnish stations. c) The ratio between absorption and auroral inten­ sity according to Loparskaya data.