Vol. 18, issue 01-02, article # 31
pdf Kim A. G., Grozov V. P., Ratovsky K. G., Medvedev A. V., Potekhin A. P., Shpynev B. G. Features of behavior of ionospheric F-layer parameters in Irkutsk during the magnetic storm on October 29-31, 2003. // Atmospheric and oceanic optics. 2005. V. 18. No. 01-02. P. 167-171.Copy the reference to clipboard
Abstract:
The powerful magnetic storm of October 29-31, 2003 was a superposition of two strong magnetic storms from solar flashes dated to October 28 (Х17.02) and 29 (Х10.00). The ionospheric response to the magnetic storm in Irkutsk was investigated by a DPS-4 digisonde, a FMCW sounder, and an incoherent scatter radar. In this paper, the main attention is paid to the analysis of distinctions in the data obtained with these three different instruments. The general features of the ionospheric response coincide for all the instruments. Appreciable distinctions are observed in the main phases of the both storms and in the recovery phase of the first storm. Distinctions in recovery phase are explained by different geographic locations of the instruments: the central point of FMCW sounder path was located 100 km west from the Irkutsk DPS-4 and almost coincided with the position of the major lobe of the incoherent scatter radar. The discrepancy in the data of the FMCW sounder and the radar is essentially less in comparison with the discrepancy from the digisonde data. Such a character of distinction indicates the existence of very strong gradients of electron concentration in the east-western direction during the recovery phase of the magnetic storm.