Interpretation of auroral oval equivalent current flow near dusk using inversion techniques

Details Interpretation of auroral oval equivalent current flow near dusk using inversion techniques Interpretation of auroral oval equivalent current flow near dusk using inversion techniques

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84..450h&link_type=abstract

Journal of Geophysical Research, vol. 84, Feb. 1, 1979, p. 450-456. Research supported by the National Research Council of Cana

Physics

5

Auroral Electrojets, Inversions, Magnetohydrodynamic Flow, Nocturnal Variations, Current Density, Flow Theory

Scientific paper

Using linear inversion techniques developed by Oldenburg (1976, 1977), the auroral electrojet configuration in the evening sector is studied with a view to finding the local time dependence of the westward electrojet which flows at the poleward edge of the eastward electrojet. Specific current systems whose magnetic field perturbations fit the observations to within a specified rms error are developed which, in conjunction with the inversions, yield useful information on the current density across the electrojets. It is found that the westward electrojet penetrates up to the dusk meridian for periods of moderate activity even though substorms are not necessarily in progress.

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