A relationship between synchronous altitude electron fluxes and the auroral electrojet

Details A relationship between synchronous altitude electron fluxes and the auroral electrojet A relationship between synchronous altitude electron fluxes and the auroral electrojet

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80.2319s&link_type=abstract

Journal of Geophysical Research, vol. 80, June 1, 1975, p. 2319-2324.

Physics

1

Auroral Electrojets, Electron Precipitation, Magnetic Surveys, Polar Substorms, Atmospheric Models, Electric Fields, Electron Flux Density, Ionospheric Conductivity, Magnetometers, Radiation Belts

Scientific paper

Simultaneous observations during four substorms are reported from the Lockheed auroral particle spectrometer on ATS 5 and the University of Alberta meridian magnetometer chain. During the four events studied there was a good correlation between the magnitude of the trapped electron fluxes in the energy range from 1.8 to 53 keV and the magnitude of the electrojet current as measured by a station in the magnetometer chain at a latitude close to that expected for the ATS conjugate point. A model electrojet is constructed based on the work of Coroniti and Kennel (1972) which gives a good absolute agreement between the two measured quantities. The results are consistent with the convection electric field's remaining approximately constant during a substantial portion of each of the substorms studied. The temporal variations of the electrojet were apparently controlled by conductivity changes in the ionosphere as determined by the precipitating auroral electrons.

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