Physics – Geophysics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994rvgeo..32..139j&link_type=abstract
Reviews of Geophysics (ISSN 8755-1209), vol. 32, no. 2, p. 139-157
Physics
Geophysics
12
Earth Magnetosphere, Geomagnetism, Interplanetary Magnetic Fields, Magnetic Dipoles, Magnetohydrodynamics, Crres (Satellite), Radiation Belts, Ring Currents, Scatha Satellite, Solar Wind
Scientific paper
A general overview of magnetospheric modeling is given, along with a more detailed discussion of several empirical models which are widely used. These models are composed of representations of the Earth's main internal field (basically a bipolar field), plus external field contributions due to ring currents (carried by the particles in the Van Allen radiation belts), magnetopause currents (the boundary surface between the Earth's magnetic field and interplanetary magnetic field carried by the solar wind), and tail currents (carried by particles in the neutral sheet of the magnetotail). The empirical models presented here are the Mead-Fairfield, Olsen-Pfitzer tilt-dependent (1977), Tsyganenko-Usamo, Tsyganenko (1987), Olsen-Pfitzer dynamic (1988), Tsyganenko (1989), and Hilmer-Voight models. The derivations, agreement with quiet time and storm time data from the two satellite programs, Spacecraft Charging at High Altitudes (SCATHA) and Combined Release Radiation Effects Satellite (CRRES), and computational requirements of these models are compared.
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