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.

A.G. Yahnin et al. As a result, most of events are mapped within 0.5 R e from the modeled plasmapause. Since the proton precipitation responsible for the spots closely relates to generation of quasi-monochromatic Pci, we conclude that the cold plasma gradient is the preferable location for generation of this type of the EMIC waves. We conclude that the rest of the spot events which are at larger distances from the plasmapause are also the result of the ion-cyclotron interaction related either to the gradients of the cold plasma inside the plasmapause or to the detached cold plasma regions. Acknowledgements. The work of A. Yahnin and T. Yahnina is supported by the basic research programs of the Russian Academy of Sciences #22 and #4. The work of T. Yahnina is also supported by the Russian Foundation for Basic Research grant #11-02-00397. V. 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