Paper#: 15
Poster #: 12
Session Name: Poster Session 2
Room: East Ballroom
Day: Thursday
Time: 10:10 a.m.-Noon
Abstract Title: Plasma Velocity Fluctuations inside the Plasma Sheet during Magnetospheric Substorm
PresentSurname: Antonova, E.E.
All Authors: E.E. Antonova, I.L.Ovchinnikov, Y.I.Yermolaev
Abstract : The results of INTERBALL/Tail observations of velocity fluctuations in the geomagnetic tail during selected geomagnetic substorms are analyzed. The main feature of the velocity fluctuations are the increase of the amplitude of fluctuations after the beginning of substorm expansion phase onset and gradual decrease during the substorm recovery phase. The process of the generation of the turbulence is discussed. The distribution of the magnetic field and plasma concentration in the turbulent plasma sheet during different substorm phases are modeled. The feature of the magnetospheric substorm which can be described by the theory of the plasma sheet with medium-scale turbulence are selected.