Peculiarities of the outer radiation belt dynamics during the strong magnetic storm of May 15, 2005

The dynamics of energetic electrons (E ^sub e^=0.17-8 MeV) and protons (E ^sub p^=1 MeV) of the outer radiation belt during the magnetic storm of May 15, 2005, at high (GOES-10 and LANL-84 geosynchronous satellites) and low (Meteor-3M polar satellite) altitudes is analyzed. The data have been compar...

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Bibliographic Details
Published in:Geomagnetism and Aeronomy 2007-12, Vol.47 (6), p.696-703
Main Authors: Tverskaya, LV, Ginzburg, E A, Ivanova, T A, Pavlov, N N, Svidsky, P M
Format: Article
Language:English
Subjects:
Dst variations
Electrojet
Geomagnetic disturbances
Geomagnetic storms
Magnetic fields
Radiation
Radiation belts
Satellite data
Satellites
Solar flares
Solar wind magnetic fields
Storms
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Summary:The dynamics of energetic electrons (E ^sub e^=0.17-8 MeV) and protons (E ^sub p^=1 MeV) of the outer radiation belt during the magnetic storm of May 15, 2005, at high (GOES-10 and LANL-84 geosynchronous satellites) and low (Meteor-3M polar satellite) altitudes is analyzed. The data have been compared to the density, plasma velocity, solar wind, and magnetic field measurements on the ACE satellite and geomagnetic disturbances. During the magnetic storm main phase, the nighttime boundary of the region of trapped radiation and the center of westward electrojet shifted to L 3. Enhancements of only low-energy electrons were observed on May 15, 2005. The belt of relativistic electrons with a maximum at L 4 was formed during the substorm, the amplitude of which reached its maximum at 0630 UT on May 16. The results are in good agreement with the regularity relating the position of a maximum of the new relativistic electron belt, boundaries of the trapped radiation region, and extreme low-latitude position of westward electrojet center to the Dst variation amplitude.[PUBLICATION ABSTRACT]
ISSN:0016-7932
1555-645X
0016-7940
DOI:10.1134/S0016793207060023