Geomagnetic effects of interplanetary sector structure

摘要: Abstract In this paper the geomagnetic effects of interplanetary magnetic sector structure are studied on basis some new criteria and working hypotheses. Thus, we assume that recurrence disturbances should be understood in a dynamical sense, connection with evolution full structure, not necessarily as 27-day recurrence. Accordingly, representation during 1968, deduced by Wilcox Colburn, have defined four ‘main recurring lines’, which link boundaries recurrent successive solar rotations. The term ‘group SC SI events’, abbreviated gr (SC + SI), introduced us previous works to designate morphological grouping individual events collective events, is also used. It pointed out bulk SI) either associated boundaries, or Part these reveal existence ‘secondary within sectors. above hypotheses observations been checked superposed epoch analysis, performed for each main line part all lines combined. following parameters analysed: number total activity index Kp. result analysis consists appearance sharp maximum considered day boundary. This fact proves important general, regard aspects activity. Essentially consist occurrence specific increase Kp index, when pass magnetosphere. suggests accompanied corotating shocks magnetohydrodynamical turbulence. high frequency days noticeable. Each presents certain ‘individuality’, expressed particularly secondary maxima parameters, corresponding lines’. One might due distortions sectors related ‘subsector’ ‘filaments’. distribution near depends direction field polarity change. All results lead conclusion most can accounted interaction between wind connected magnetosphere, flare-induced representing statistically mechanism.