Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3410103v&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 10, CiteID L10103
Physics
2
Magnetospheric Physics: Energetic Particles: Trapped, Magnetospheric Physics: Magnetosphere: Inner, Magnetospheric Physics: Numerical Modeling, Magnetospheric Physics: Ring Current, Magnetospheric Physics: Magnetic Storms And Substorms (7954)
Scientific paper
Ion drift calculations in the inner magnetosphere are important for the study of the ring current. We calculate the bounce-averaged hydrogen densities and magnetic gradient-curvature drift velocities for ions moving in the storm-time T04s magnetic field, and compare them with those for a dipole field for various geomagnetic conditions. We find that the hydrogen density for T04s differs with ~5% from that for a dipole field for quiet time and it may become 30% smaller for disturbed conditions on the nightside for L > 4. The velocities for T04s at large L-shells are ~20% higher on the nightside and 20% lower on the dayside than those for a dipole field for quiet time. For disturbed conditions they are respectively ~200% higher and 20% lower than the dipole values. The contribution of the cross-B term to the magnetic drift is ~5%.
Jordanova Vania K.
Vapirev Alexander E.
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