The substorm on March 12, 1991 is studied using the data of ground-based network of magnetometers, all-sky cameras and TV recordings of aurora, and measurements of particle fluxes and magnetic field onboard a satellite in the equatorial plane. The structure of substorm activity and the dynamics of auroral ions of the central plasma sheet (CPS) and energetic quasi-trapped ions related to the substorm are considered in the first part. It is shown that several sharp changes in the fluxes and pitch-angle distribution of the ions which form the substorm ion injection precede a dipolarization of the magnetic field and increases of energetic electrons, and coincide with the activation of aurora registered 20° eastward from the satellite. A conclusion is drawn about different mechanisms of the substorm acceleration (injection) of electrons and ions.
Studies of the substorm on March 12, 1991: 1. Structure of substorm activity and auroral ions
Cosmic Res
Cosmic Research ; 45 , 1 ; 27-38
2007-02-01
12 pages
Article (Journal)
Electronic Resource
English
Studies of the substorm on March 12, 1991: 1. Structure of substorm activity and auroral ions
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