Mini-belt as a fine spatial structure of the outer radiation belt in quiet and disturbed conditions

A. Dmitriev, G. Popov, V. Degtyarev, S. Chudnenko, G. Reeves

研究成果: 雜誌貢獻期刊論文同行評審


Electron flux data from LANL geostationary spacecrafts were statistically treated and ordered in a special magnetic coordinate system (effective L-coordinate and MLT). The data treating procedure allowed to obtain the dynamics of quasi-trapped electrons of different energies on effective L-shells ranging from 6.6 to 7.0. It was found that in quiet conditions a stable fine spatial structure of quasi-trapped electrons exists with maximum of fluxes near L = 6.78 and MLT=12. This structure may be looked at as an asymmetrical "mini-belt". The position of the maximum depends on electron energy and changes with magnetic activity. The dynamics of this mini-belt for both quiet and disturbed periods is illustrated and discussed. During isolated magnetic storms the mini-belt maximum shifts in a regular manner outward and inward; a diffusion wave of quasi-trapped particles propagates from outside of the geostationary orbit and serves as a source of new particles for the mini-belt. The azimuthal geometry of this diffusion wave extracted from experimental data is illustrated. The possible role of the "mini-belt" is discussed in relation with well- known "anomalous" dynamics of the inner radiation belt.

頁(從 - 到)2855-2859
期刊Advances in Space Research
出版狀態已出版 - 12月 2002


深入研究「Mini-belt as a fine spatial structure of the outer radiation belt in quiet and disturbed conditions」主題。共同形成了獨特的指紋。