A new method to derive 'instantaneous' high-latitude potential distributions from satellite measurements including auroral imager data

Details A new method to derive 'instantaneous' high-latitude potential distributions from satellite measurements including auroral imager data A new method to derive 'instantaneous' high-latitude potential distributions from satellite measurements including auroral imager data

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..439m&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, April 1987, p. 439-442. Research supported by the Swedish Board for Spac

Physics

28

Earth Magnetosphere, Electric Fields, Electrodynamics, Magnetic Fields, Satellite Imagery, Auroras, Field Aligned Currents, Ultraviolet Photography

Scientific paper

Electric field, magnetic field, auroral imager, and particle observations obtained on the Viking satellite for one dusk-dawn crossing through the polar cusp are used to illustrate a new technique to derive 'instantaneous' pictures of the high-latitude electrodynamics. Global electric field distributions are calculated using, as input, UV-imager data of the auroral distribution and in situ measurements of the electrodynamical parameters along the Viking orbit, which are combined with measured average distributions of field-aligned currents (Regions 1 and 2) and conductivities representing the diffuse auroral background. The results demonstrate that self-consistent and realistic solutions of the prevaling 'instantaneous' auroral electrodynamics are obtained in this manner.

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