Physics
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.9009z&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, July 1, 1989, p. 9009-9027.
Physics
20
Ionospheric Disturbances, Magnetohydrodynamic Stability, Space Plasmas, Energy Spectra, F Region, Power Spectra, Two Dimensional Models
Scientific paper
The dynamical properties and spectral characteristics of the ionospheric interchange instability in the collisional and inertial regimes are investigated numerically and analytically, using a two-dimensional fluid model. This model, which describes the collisional and inertial dynamics of the F region ionosphere, is similar to the models of Ott (1978) and Kintner and Seyler (1985). By numerically integrating the model equations, the nonlinear evolution of three interchange unstable configurations in the collisional and inertial regimes are followed, and their dynamical and spectral properties are studied. The solutions indicate that the dynamical properties of a collision-dominated regime are distinctly different from those of an inertia-dominated regime. The qualitative characteristics of a plasma bubble in both regime-types are described.
Seyler Charles E.
Zargham Shahrokh
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