Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm71a0573v&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM71A-0573
Physics
2730 Magnetosphere: Inner, 2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2764 Plasma Sheet, 2788 Storms And Substorms
Scientific paper
Fluctuations of the plasma bulk velocity across the plasma sheet are studied using single-point measurements form the Corall instrument onboard the Interball-Tail satellite. Several hour-long intervals of continuous data corresponding to the different phases of isolated substorms are analyzed. The plasma sheet flow appears to be strongly turbulent, i. e. is dominated by fluctuations that are unpredictable. However it was found that the level of turbulence increases significantly after the substorm expansion phase onset and descreases slowly to the initial level during the recovery phase. Corresponding Eddy diffusion coefficients were obtained as a function of the autocorrelation time and rms velocity.
Antonova Elizabeth E.
Ovchinnikov Ilya L.
Stepanova M. V.
Vucina-Parga T. B.
Yermolaev Yu I.
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