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.

О.M. Barkhatova at al. Fig. 3. Results of MOF restoration by neural network for trace Irkutsk - Rostov-on-Don by MOF data o f trace Inskip - Rostov-on-Don with attraction of additional parameters (see the text). A solid line - real MOF values o f Irkutsk - Rostov-on-Don trace, a dashed line - the values restored by neural network. Similar neural network restoration o f MOF data has been carried out for trace Cyprus - Rostov-on-Don. In this case as additional parameters were used: IMF module В with time delay 140 minutes; components Bx and By IMF with time delays 80 and 160 minutes, accordingly; a solar zenith angle. The correlation coefficient between real and restored sequences in this case has made 0.9. 5. Conclusions Influence of interplanetary space parameters on DMOF behaviour at subauroral Norilsk - Rostov-on-Don, mid­ latitude Inskip - Rostov-on-Don and Irkutsk - Rostov-on-Don and low-latitude Cyprus - Rostov-on-Don oblique sounding traces is investigated. Calculation of linear correlations and search o f nonlinear connections with use of Elman neural network allows to establish a key parameters with characteristic time delays which have the greatest influence on DMOF at these traces. It is established, that on DMOF o f all researched oblique sounding traces the main influence have Interplanetary Magnetic Field module and its components. Typical time delays of DMOF for researched traces relatively heliogeophysical parameters are calculated. Their values for IMF module В and component By are 100-140 and 120-200 minutes, accordingly. For IMF components Bx and Bz the values o f time delays are 60-80 minutes. The analysis of the received results allow to develop a neural network restoration technique o f initial MOF values of traces Irkutsk - Rostov-on-Don and Cyprus - Rostov-on-Don by MOF data o f Inskip - Rostov-on-Don trace. At neural network restoration the most effective interplanetary space parameters with established time delays were used. Thus high correlation coefficients (more than 0.8) between real and restored sequences are achieved. Acknow ledgem ents. Work is executed at partial support under grant of the RFBR 09-05-00495, and also program Ministry of Education and Science «Development o f higher school scientific potential (2009-2010, project N 1623)». References Ahmed M, Sagalin R.C. Thermal positive ions in the dayside polar cusps, measured on the ISIS-satellite // Space Sci. Rev. V. 13. N3. P.541-547. 1973 Caan M.N. Interplanetary magnetic field changes and the magnetotail // Dinamic Magnetosphere Dordrecht P 63- 75. 1980. Kolesnic A.G., Chernyshev V.I., Belov M.V. Several features o f time-spatial behaviour o f main ionospheric trough / / Geomagnetism and Aeronomy. V. 41. N3. P. 342-346. 2001. Mikhailov A., Schlegel K. Physical mechanism of strong negative storm effects in the daytime ionospheric F2 region observed with EISCAT // Annales Geophysicae. V. 16. P. 602 - 608. 1998. Yokoyama N., Kamide Y., Miyaoka H. The size of the auroral belt during magnetic storms // Annales Geophysicae V. 16. P. 566-573. 1998. 112