Physics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9619353d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Nov. 1, 1991, p. 19,353-19,362. Research supported by Lockheed Corp.
Physics
9
Auroral Zones, Earth Magnetosphere, Electron Energy, Nonlinear Systems, Plasma-Particle Interactions, Pulsed Radiation, Cold Plasmas, Electron Precipitation, Strange Attractors, Very Low Frequencies
Scientific paper
Using a nonlinear model of the auroral pulsation system that includes processes important to the interactions between VLF waves and energetic electrons, it is shown that the temporal variations in electron precipitation patterns observed in the morningside auroras may be driven by preexisting spatial variations in plasma density. The model, developed earlier by Davidson and Chiu (1986), consists of three differential equations, with time derivatives generated in reference frames moving with either the energetic electrons, the cold plasma, or the VLF waves that interact with the energetic electrons. The results demonstrate the existence of coupling between spatial irregularities and the electron precipitation process.
Chiu Yam T.
Davidson Gerald T.
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