Polar cusp electrodynamics

Details Polar cusp electrodynamics Polar cusp electrodynamics

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.270..255s&link_type=abstract

In ESA, Proceedings of the 8th ESA Symposium on European Rocket and Balloon Programs and Related Research p 255-260 (SEE N88-162

Computer Science

Electrodynamics, Interplanetary Magnetic Fields, Polar Cusps, Atmospheric Conductivity, Auroras, Magnetic Storms, Magnetosheath, Ohmic Dissipation, Plasma Drift, Resistance Heating

Scientific paper

By combining continuous ground-based observations of polar cusp auroras with electromagnetic parameters obtained from satellites in polar orbit and in the magnetosheath, electrodynamic processes in the polar cusp were investigated. The observed shifts in latitude of the cusp and the relationship with the interplanetary magnetic field orientation and magnetospheric substorms were studied. Satellite measurements of magnetic field and ion drift components above auroral structures observed from the ground permit detailed investigations of auroral electrodynamics in the cusp ionosphere. Results include the recording of equatorward movements of cusp simultaneous with evening-midnight sector auroras during a period of stable, negative magnetosheath magnetic field 2 component, well before substorm expansion phase onset.

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