Dynamics of radiation belt relativistic electrons in November 2004–January 2005

• Published in: Geomagnetism and Aeronomy 2006-03, Vol.46 (2), p.146-150
• Main Authors: Tverskaya, L. V., Veden’kin, N. N., Ginzburg, E. A., Ivanova, T. A., Pavlov, N. N., Svidskii, P. M.
• Format: Article
• Language: English
• Subjects: Aeronomy; Electrons; Magnetic fields; Radiation; Solar physics; Storms
• ISSN: 0016-7932; 1555-645X; 0016-7940
• DOI: 10.1134/S0016793206020022

The radiation belt dynamics during the extreme solar events in November 2004 and January 2005 is studied based on the measurements of relativistic electrons (with energies of 0.8-8 MeV) on the Express-A2 geostationary satellite and Meteor-3M polar satellite. New radiation belts of relativistic electrons in the space (L 3) between the stationary outer and inner belts were formed as a result of either superstorm (|Dst|^sub max^ = 373 and 289 nT). The position of the maximums of these belts (L^sub max^ = 2.9 and 3.1) coincides with the known dependence of L^sub max^ on the magnetic storm Dst variation amplitude: |Dst|^sub max^ = 2.75 × 10^sup 4^/L ^sub max^^sup 4^ . In November-December the new belt very slowly (ΔL 0.1 per month) shifted toward the Earth. During the series of moderate (100 nT) magnetic storms that developed as a result of the extreme solar events in January 2005, the belt in the space shifted toward deeper L shells (L 2.5). The moderate January storms produced new belts with L^sub max^ ≥ 4.[PUBLICATION ABSTRACT]