Physics of auroral phenomena : proceedings of the 33rd Annual seminar, Apatity, 02 - 05 March, 2010 / [ed.: A.G. Yahnin, A. A. Mochalov]. - Апатиты : Издательство Кольского научного центра РАН, 2011. - 206 с. : ил.

The solar wind Bz-events and their effects on the geomagnetic activity Bz > 5 nT Bz < -5 nT IMF В Num Bz+=356 Num Bz' =335 250 - 349 400 -449 500 - 549 600 -649 > 7 0 0 l k m /s e c 60 50 40 30 20 10 0 - Num Bz+=238 Num Bz =237 ' IVSpgl, 1 — — T— ,— T— ,— , 0 - 2 0 71 -150 201 -3 0 0 >300 Figure 1. Assignment of the solar wind parameters in 5z-e vents during 1967 - 1987 (from top to bottom): module of the IMF vector ( В ), density ( N) and velocity (V) of the solar wind, particle temperature (7). Each panel shows total number o f of 5 z+-events and Bz ~events (Num Bz* and Num Bz~ correspondingly) and expressed as percentage number o f Bz+-events (sparse hatching) and Bz' -events (dense hatching) within indicated on the bottom axis scale spacing. 57