Computer simulation of a geomagnetic substorm

Details Computer simulation of a geomagnetic substorm Computer simulation of a geomagnetic substorm

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981phrvl..46.1038l&link_type=abstract

Physical Review Letters, vol. 46, Apr. 13, 1981, p. 1038-1041. Navy-NASA-supported research.

Physics

55

Computerized Simulation, Earth Magnetosphere, Geomagnetism, Interplanetary Magnetic Fields, Magnetic Storms, Cold Plasmas, Magnetic Field Configurations, Magnetohydrodynamic Flow, Plasma Acceleration, Plasma Sheaths, Space Plasmas, Two Dimensional Models

Scientific paper

A global two-dimensional simulation of a substormlike process occurring in earth's magnetosphere is presented. The results are consistent with an empirical substorm model - the neutral-line model. Specifically, the introduction of a southward interplanetary magnetic field forms an open magnetosphere. Subsequently, a substorm neutral line forms at about 15 earth radii or closer in the magnetotail, and plasma sheet thinning and plasma acceleration occur. Eventually the substorm neutral line moves tailward toward its presubstorm position.

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