Physics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9815381u&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A9, p. 15,381-15,401.
Physics
12
Earth Magnetosphere, Magnetic Storms, Magnetohydrodynamic Stability, Magnetosphere-Ionosphere Coupling, Solar Terrestrial Interactions, Current Sheets, Electron Precipitation, Energetic Particles, Evolution (Development)
Scientific paper
A comprehensive data set is here employed to conduct a detailed case study of the relationship between a sudden storm commencement (SSC) and magnetospheric substorm onsets.These observations are discussed within the framework of a model in which the ballooning mode instability (BMI) that develops in the near-earth plasma sheet is taken to be the trigger of the expansion phase. It is concluded that the magnetosphere was probably unstable for the BMI when the SSC occurred, and that the interaction of the SSC with the magnetospheric particles expanded the cross-tail current sheet further earthward: thereby creating plasma conditions in which the BMI could grow.
Block Lars P.
Iversen Iver B.
Korth Alex
Kremser Gerhard
Roux Alain
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