Studies of substorm on March 12, 1991: 2. Auroral electrons. Acceleration, injection, and dynamics

被引:0
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作者
L. L. Lazutin
T. V. Kozelova
N. P. Meredith
M. Danielides
B. V. Kozelov
J. Jussila
A. Korth
机构
[1] Moscow State University,Skobel’tsyn Institute of Nuclear Physics
[2] Russian Academy of Sciences,Polar Geophysical Institute, Kola Scientific Center
[3] British Antarctic Survey,undefined
[4] Oulu University,undefined
[5] Max Planck Institute,undefined
来源
Cosmic Research | 2007年 / 45卷
关键词
94.30.Lr; 94.30.Aa; 94.20.Ac;
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摘要
In the first part of this study of the substorm of March 12, 1991, the space-time structure of substrorm disturbance and dynamics of auroral ions were considered. This second part presents an analysis of measurements of auroral electrons onboard the CRRES satellite. It is demonstrated that enhancements of the electron flux (injections) during large-scale and local dipolarizations of the magnetic field are determined by a combination of field-aligned, induction, and betatron mechanisms of acceleration with an effect of displacement of the drift shells of particles. The relative contributions of these mechanisms in relation to the energy of auroral electrons are determined.
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页码:89 / 96
页数:7
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