Multiple correlation between auroral and magnetic pulsations. Part 2: Determination of electric currents and electric fields around a pulsating auroral patch

Details Multiple correlation between auroral and magnetic pulsations. Part 2: Determination of electric currents and electric fields around a pulsating auroral patch Multiple correlation between auroral and magnetic pulsations. Part 2: Determination of electric currents and electric fields around a pulsating auroral patch

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..395o&link_type=abstract

In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 395-398 (SEE N85-24544 14-46)

Physics

Auroras, Electric Field Strength, Geomagnetic Pulsations, Ionospheric Conductivity, Auroral Electrojets, Field Aligned Currents, Least Squares Method, Magnetic Storms

Scientific paper

The electric currents induced in and around a pulsating auroral form are determined by breaking down the magnetic variation observed at a single station into the contributions from various pulsating auroral forms by the least squares method. Multiple correlation analysis shows that the magnetic deflections at ground points below a pulsating auroral form can be estimated even when many pulsating patches appear at the same time. A model calculation shows that the horizontal magnetic deflections, observationally determined, are fully explained by the combination of ionospheric and field aligned electric currents theoretically expected to be induced in and near a local enhancement of conductivity of a pulsating auroral patch under the existence of a uniform, convection electric field.

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