Dynamical injections as the source of near geostationary quiet time particle spatial boundaries

Details Dynamical injections as the source of near geostationary quiet time particle spatial boundaries Dynamical injections as the source of near geostationary quiet time particle spatial boundaries

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....8810011m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Dec. 1, 1983, p. 10011-10024.

Physics

43

Geosynchronous Orbits, Magnetospheric Ion Density, Plasma Dynamics, Radiation Belts, Space Plasmas, Boundary Layer Plasmas, Convection, Magnetospheric Electron Density, Spatial Distribution, Statistical Analysis, Synchronous Satellites

Scientific paper

The question whether the noon-dusk feature is a manifestation of the spatial structures that should arise from quasi-stationary convection is examined. The key consideration here is whether the energy dispersion of the feature can be explained. It is shown that the observed energy dispersion cannot be attributed to the standard stationary convection configurations, either perturbed or unperturbed. It is also demonstrated, using a detailed computer simulation, that the nighttime, double-spiral-shaped injection boundary (used previously to reproduce the fast changing nighttime features) is successful at reproducing the noon-dusk feature by allowing the particles to evolve for periods of 12 to 36 hours after the injection. It is stressed that the portion of the injection boundary responsible for the feature looks very different from the standard convection boundaries configuration. Conclusions are offered concerning the importance of quasi-stationary convection as the mechanism by which the near geostationary regions are populated.

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