Finite geometry effects of field-aligned currents

Details Finite geometry effects of field-aligned currents Finite geometry effects of field-aligned currents

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.8569f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A6, June 1, 1992, p. 8569-8579.

Physics

20

Current Density, Earth Magnetosphere, Field Aligned Currents, Geometry, Magnetosphere-Ionosphere Coupling, Current Sheets, Density Distribution, Magnetic Fields, Magnetic Signatures, Mathematical Models

Scientific paper

Results are presented of model calculations of the magnetic field produced by finite current regions that would be measured by a spaceborne magnetometer. Conditions were examined under which the infinite current sheet approximation can be applied to the calculation of the field-aligned current (FAC) density, using satellite magnetometer data. The accuracy of the three methods used for calculating the current sheet normal direction with respect to the spacecraft trajectory was assessed. It is shown that the model can be used to obtain the position and the orientation of the spacecraft trajectory through the FAC region.

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