Fine structure of auroras during auroral breakup according to the ground-based and satellite observations

被引：0
作者：
I. A. Kornilov
E. E. Antonova
T. A. Kornilova
O. I. Kornilov
机构：
[1] Russian Academy of Sciences,Polar Geophysical Institute (PGI), Kola Scientific Center
[2] Moscow State University,Skobeltsyn Research Institute of Nuclear Physics
[3] Russian Academy of Sciences,Space Research Institute
来源：
Geomagnetism and Aeronomy | 2008年 / 48卷
关键词：
94.10.Rk;
D O I：
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学科分类号：
摘要：
The dynamics and fine structure of auroras before and during 60 auroral breakups, including pseudobreakups and breakups at moderate and high auroral activity, have been studied using the developed method for processing television images. The IMAGE and POLAR satellite and simultaneous ground images of auroras, ground magnetic data, and measurements of IMF and solar wind plasma parameters have been analyzed. The signatures that can be precursors of breakup have been found out in the auroral dynamics and morphology in the spatial—temporal vicinity of breakup. The morphological characteristics of auroral structures have been analyzed statistically. The directions of motion of weak subvisual structures have been determined. The velocities of motion of such structures are presented. The relation of the initial auroral arc bright-ening during breakups and pseudobreakups to the beginning of magnetic activation and formation of rayed structures has been analyzed.
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页码：7 / 19
页数：12
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