Post substorm convection and auroral arc currents determined from multiple ionospheric, magnetic, and electric field observations

Details Post substorm convection and auroral arc currents determined from multiple ionospheric, magnetic, and electric field observations Post substorm convection and auroral arc currents determined from multiple ionospheric, magnetic, and electric field observations

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.9975w&link_type=abstract

Journal of Geophysical Research, vol. 86, Nov. 1, 1981, p. 9975-9988.

Computer Science

Sound

5

Auroral Arcs, Convective Flow, Ionospheric Currents, Polar Substorms, Atmospheric Models, Auroral Electrojets, Field Aligned Currents, Ohms Law, Plasma Probes, Rocket Sounding, Vertical Distribution

Scientific paper

Analyses of auroral current systems during the recovery phase of a substorm were conducted based on (1) field, particle and optical observations from rocket-borne probes; (2) magnetic data from a meridian chain of stations; and (3) data from three scanning photometers. Current models were determined independently of both magnetic field observations and electric field and ionospheric observations. The models indicated that there are several different and independent current systems, consisting of ionospheric Hall and Pedersen currents of varying intensities and directions, which were linked to field-aligned currents in such a way as to form solenoidal current loops or cells. Current systems within a broad, enhanced, inverted-V region were narrow, and some of the outward field-aligned currents were coincident with auroral arcs and local enhancements in the energetic particle flux.

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