Physics of auroral phenomena : proceedings of the 34th Annual seminar, Apatity, 01 - 04 March, 2011 / [ed.: A. G. Yahnin, A. A. Mochalov]. - Апатиты : Издательство Кольского научного центра РАН, 2011. - 231 с. : ил.

M.A. Volkov tubes and their thermal energy are significantly increased. The thermal energy increases significantly as it is seen in fig.3 for the adiabatic process. This significant increase of the thermal energy in this model suggests that at large distances from the Earth the two-dimensional motion of the magnetospheric plasma perpendicular to the magnetic field lines should be considered. Conclusions The precipitation of the charged particles effects the redistribution of plasma pressure and the Bz component of the magnetic field in the magnetosphere tail. This effect is manifested as the dipolarization of the magnetic field lines. This effect according to the results is essential for a distance not exceeding 10 RE. At larger distances the cooling of magnetic tubes is difficult to explain only by precipitation of the particles. It is estimated that the plasma velocity decreases towards the Earth from 220 km/c at the distance of 20 R e up to 25 km/с at the distance SRE during the dipolarization, that is consistent with observations. References Angelopoulos, V., Kennel, C., Coroniti, F., Pellat, R., Kivelson, М., Walker, R., Russell, C., Baumjohann, W., Feldman, W.,and Gosling, J.: Statistical Characteristics of Bursty Bulk Flow Events, J. Geophys. Res., 99(A11), 21257-21280, 1994. Baumjohann, W., G. Paschmann, and H. L.uhr (1990), Characteristics of high speed ion flows in the plasma sheet, J. Geophys. Res., 95, 3801-3809. Knight, S., Parallel electric fields, Planet. Space Sci., 21, 741, 1973. Marklund G., Sandahl I., and Opgenoorth H. A study of the dynamics of a discrete auroral arc. Planet.Space.Sci., vol.30, p. 179,1982. Reeves, G. D., Henderson, M. G., McLachlan, P. S., Belian, R. D., Friedel, R. H.W., and Korth, A.: Radial propagation of substorm injections, in Proceedings of ICS-3, Versailles, France, 12-17 May 1996, ESA SP-389, 579-584,1996. Runov, A., V. Angelopoulos, M.I. Sitnov, V.A. Sergeev, J. Bonnell, J.P. McFadden, D. Larson, K.- Glassmeier, and U. Auster, THEMIS observations of an earthward-propagating dipolarization front, Geophysical Research Letters, Vol.36, L14106, doi: 10.1029/2009GL03 8980,2009. Shiokawa, K., W. Baumjohann, and G. Haerendel. Breaking of high-speed flows in the near-Earth tail, Geophys. Res. Lett., 24, 1179-1182. 1997. Tsyganenko N. A., Modeling the Earth's Magnetospheric Magnetic Field Confined Within a Realistic Magnetopause, J.Geophys.Res., 100, 5599-5612,1995. Volkov M.A. The influence of electric field increasing on the substorm currents formation. Proceedings of the 33rd Annual Seminar “Physics of auroral phenomena”, Apatity 2011, p.46-48. 24