Geotail Field Model 1979


Author: D. B. Beard
Department of Physics and Astronomy
University of Kansas
Lawrence, Kansas 66045

Parameter: Earth's magnetic field vector and strength including external sources

Brief Description:
This data set consists of a set of subroutines designed to calculate the magnetic field of the Earth from -40 Earth radii to +10 Earth radii. The coefficients are calculated assuming the axis of the Earth's dipole is perpendicular to the Earth-Sun line. The magnetic potential was obtained by integrating over a model magnetotail current system and fitting the surface field to a set of Bessel functions.

References:
D. B. Beard, The Magnetotail Magnetic Field, J. Geophys. Res. 84, 2118, 1979.


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