On the relationship between the energetic particle flux morphology and the change in the magnetic field magnitude during substorms

Details On the relationship between the energetic particle flux morphology and the change in the magnetic field magnitude during substorms On the relationship between the energetic particle flux morphology and the change in the magnetic field magnitude during substorms

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9417105l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Dec. 1, 1989, p. 17105-17119. Research supported by NASA.

Physics

67

Energetic Particles, Flux (Rate), Geomagnetic Tail, Magnetic Fields, Magnetic Storms, Current Sheets, High Temperature Plasmas, Ion Injection, Plasma Sheaths

Scientific paper

The relationship between the morphology of energetic particle substorm injections and the change in the magnetic field magnitude over the course of the event is examined. Using the statistical relationships between the magnetic field during the growth phase and the change in the field magnitude during substorms calculated by Lopez et al. (1988), a limited number of dispersionless ion injections observed by AMPTE CCE are selected. It is argued that this limited set is representative of a large set of events and that the conclusions drawn from examining those events are valid for substorms in general in the inner magnetosphere. It is demonstrated that in an event when CCE directly observed the disruption of the current sheet, the particle and field data show that the region of particle acceleration was highly turbulent and was temporally, and perhaps spatially, limited and that the high fluxes of energetic particles are qualitatively associated with intense inductive electric fields.

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