Physics of auroral phenomena : proceedings of the 35th Annual seminar, Apatity, 28 Februaru – 02 March, 2012 / [ed. board: A. G. Yahnin, A. A. Mochalov]. - Апатиты : Издательство Кольского научного центра РАН, 2012. - 187 с. : ил., табл.

V. V. Ivanov, E.S. Gorshkov The only difference is duration o f the eclipse phase: from several minutes for NM (FM, SE, LE) to about 6 hours for the Mercury and Venus transiting across the solar disk and over 4 months for the polar night. Such a pattern o f DSM changes in various situations reflects the similarity o f the processes, related either to the fact o f three celestial bodies conjunction: Sun-Earth-Moon (Mercury, Venus) or to the solar “eclipse” akin to the polar night. ce nter 45 ' 1 32 63 94 125 156 187 218 249 280 311 342 day number 50 1 13 25 37 49 61 73 85 97 109 121 133 145 157 169 181 193 205 element number 1 13 25 37 49 61 73 85 97 109 121 133 145 element number local time Fig. 8. DSM fluctuations during various analyzed intervals, including: a) NM (SE); b) nadir o f the Sun; c) the Venus transiting across the solar disk; d) the polar night. Illustration o f similar character o f the processes. The findings confirm the direct relation o f the phenomena in question to the dynamics o f biospheric processes. 171