Modeling the partial ring current effect in a disturbed magnetosphere

Details Modeling the partial ring current effect in a disturbed magnetosphere Modeling the partial ring current effect in a disturbed magnetosphere

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ge%26ae..48..737b&link_type=abstract

Geomagnetism and Aeronomy, Volume 48, Issue 6, pp.737-746

Mathematics

1

94.30.Jp

Scientific paper

The mathematical model of the magnetic field of the partial ring current has been proposed. This current is considered as a pair of spatial current circuits in the Northern and Southern hemispheres, either of which includes two ring zones, in the geomagnetic equator plane and ionosphere, and two zones of the field-aligned current, flowing along the geomagnetic dipole field lines and joining ring fragments of the circuit. The model parameters are: colatitude of the eastward electrojet, longitudinal shift relative to the Sun-Earth axis, circuit half-angle, and the total current flowing in the circuit. The Biot-Savart-Laplace law has been used to calculate the magnetic field of the current circuit. The magnetic field of the partial ring current has been calculated under the conditions typical of a strong magnetic storm. The technique for calculating the partial ring current intensity, using the Asym-H geomagnetic index, has been proposed.

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