Different phases of a magnetospheric substorm on June 23, 1979

Details Different phases of a magnetospheric substorm on June 23, 1979 Different phases of a magnetospheric substorm on June 23, 1979

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7443t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7443-7457. Research supported by FFWF, Oesterreichis

Computer Science

Sound

21

Magnetic Storms, Magnetospheric Instability, Particle Precipitation, Atmospheric Sounding, Data Correlation, Electron Energy, Interplanetary Magnetic Fields, Spectral Energy Distribution

Scientific paper

Ground-based, balloon, and GEOS-2 satellite data are used here to study the evolution of a magnetospheric substorm starting at 2101 UT on June 23, 1979. It is found that the precipitation front, moving equatorward during the loading phase, was not plane but convex toward the equator. The ion phase space density near midnight at geosynchronous orbit increased during the loading phase. The increase stopped at or soon after substorm onset and was followed by a decrease during the recovery phase. Pi 2 pulsations were evident in ground magnetometers not only at substorm onset but also at the later intensifications. Variations in the IMF Bz component showed some correlation with substorm activity.

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