Physics of auroral phenomena : proceedings of the 40th annual seminar, Apatity, 13-17 March, 2017 / [ed. board: N. V. Semenova, A. G. Yahnin]. - Апатиты : Издательство Кольского научного центра РАН, 2017. - 143 с. : ил., табл.

N.G. Kleimenova et al. 24 Nov 2001 2 2 J a r» 2 0 1 3 Figure 1. An example of the dayside polar substorm observed on November 24, 2001. The upper panel demonstrates the IMF conditions: strong negative IMF By (-25 nT) and positive IMF Bz (+50 nT) values. The bottom panel shows the magnetograms from high- latitude IMAGE stations. Strong daytime negative bay­ like magnetic disturbances (“dayside polar substorms”) are seen at three stations (NAL, LYR, HOR) at geomagnetic latitudes > 70°. The AMPERE data during the considered dayside polar substorm is presented in Fig. 3. It is seen the magnetic vortex above Svalbard stations (marked by the green ellipse) and intense upward FACs which were surrounded by two sheets o f the downward currents, located to the north and south. 22 Jan 2012 0928Я» - 09380) UT 0? Figure 2. IMF data. NAL 76 . 1 ' HCR 74 . 0 ® BJN 71 . 3 " SOR 67.a* 09 11 13 U T data and IMAGE magnetometer Figure 3. AMPERE data (left panel) shows the magnetic disturbances, and right one - FAC distribution. The SUPERDARN radar data. Fig. 4 shows three high-latitude ionospheric convection maps generated by the Super Dual Auroral Radar Network (SuperDARN) HF radar network corresponding to the representative intervals o f 08.40- 08.42 UT, 09.30-09.32 UT, and 10.40-10.42 UT, i.e. before, during and after the considered dayside substorm. It is 24