Physics
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.1727c&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 16, p. 1727-1730.
Physics
3
Energy Storage, Equatorial Regions, Liouville Theorem, Magnetic Storms, Particle Energy, Ring Currents, Transport Properties, Earth Magnetosphere, Magnetopause, Plasma Layers, Steady State
Scientific paper
We perform a phase space mapping study to estimate the enhancement in energy content that results from stormtime particle transport in the equatorial magnetosphere. Our pre-storm phase space distribution is based on a steady-state transport model. Using results from guiding-center simulations of ion transport during model storms having main phases of 3 hr, 6 hr, and 12 hr, we map phase space distributions of ring current protons from the pre-storm distribution in accordance with Liouville's theorem. We find that transport can account for the entire ten to twenty-fold increase in magnetospheric particle energy content typical of a major storm if a realistic stormtime enhancement of the phase space density f is imposed at the nightside tail plasma sheet (represented by an enhancement of f at the neutral line in our model).
Chen Margaret W.
Lyons Larry R.
Schulz Michael
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