Physics of auroral phenomena : proceedings of the 37th Annual seminar, Apatity, 25 - 28 February, 2014 / [ed. board: A. G. Yahnin, N. V. Semenova]. - Апатиты : Изд-во Кольского научного центра РАН, 2014. - 125 с. : ил., табл.

I. Shagimuratov et al. For the isolated storm of 17 September intensive TEC fluctuations were observed during driven phase because recovery phase was quiet. The storm 26 September also followed by substorm activity The TEC fluctuation activity was developed in according to occurrence of substorms. 10.1(12010KUAQ 10.1(17010KUAQ 10.102010KUAQ Figure 2. Temporal and spatial occurrence of TEC fluctuations Temporal and spatial occurrence o f TEC fluctuations The occurrence of TEC fluctuations essentially depend on geomagnetic latitude. Latitudinal behavior of TEC it was analyzed using ROTI measurements over stations located at different latitudes (Fig. 2). For spatial and temporal distribution TEC fluctuations to obtain it was formed images ROTI in Corrected Geomagnetic Latitude (CGL) and Magnetic Local Time (MLT) coordinates. The stations were choused in according their location relative to auroral oval. At auroral station KELY (Fig. 4) low TEC fluctuations were observed all day. During storms the intensity fluctuations increase. In whole development of fluctuations was similar to subauroral NNVN station (Fig. 3) but intensive fluctuations were detected more time interval. Increase of TEC fluctuations were detected at the same UT time, similar NNVN stations. On the Fig. 4 the occurrence TEC fluctuations at RINK station are presented. This station located on polar edgy of auroral oval. The development fluctuations occurred also in according to solar- magnetic activity. At the same time behavior of TEC fluctuations rather is differ against auroral ionosphere. As seen on the picture strong fluctuations were prevailed near day time. NNVN (66.59, 44.10) 2011 September, 9 12 NNVN (66.59, 44.10) 2011 September, 17 NNVN (66.59,44.10) 2011 September, 10 12 NNVN (66.59,44.10) 2011 September, 26 Figure 3. The development of TEC fluctuations over subauroral NNVN station. NNVN (66.59, 44.10) 2011 September, 8 NNVN (66.59, 44.10) 2011 September, 13 91