Modeling the ionospheric response to artificially produced density enhancements

Details Modeling the ionospheric response to artificially produced density enhancements Modeling the ionospheric response to artificially produced density enhancements

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.1193c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, Feb. 1, 1992, p. 1193-1207.

Physics

8

Artificial Clouds, Barium Ion Clouds, Ionospheric Disturbances, Plasma Density, Plasmasphere, Equatorial Regions, Evening, F Region, Models, Plasma Clouds, Space Plasmas

Scientific paper

A 2D model incorporating flux tube integrated quantities is used to investigate the motion of plasma density enhancements (barium clouds) artificially introduced into the postsunset equatorial F region. The temporal development of the ionosphere, in which the density perturbations are imbedded, is derived from a 1D set of relations modeling plasma transport and the vertical electrical field from initial conditions and a prescribed variation of the horizontal electric field as a function of time. The calculations show that the strong horizontal shear flows existing at the nighttime F region ledge reduce the growth of polarization fields associated with the enhancements and adjacent relative depletions of plasma for weak perturbations.

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