Boundary conditions for the neutral and ionospheric transport equations at the base of the equatorial F region

Details Boundary conditions for the neutral and ionospheric transport equations at the base of the equatorial F region Boundary conditions for the neutral and ionospheric transport equations at the base of the equatorial F region

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9213629d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Dec. 1, 1987, p. 13629-13634. CONICET-supported research.

Physics

2

Boundary Conditions, Boundary Value Problems, Current Density, Earth Ionosphere, Equatorial Regions, F Region, Ion Motion, Electric Fields, Geomagnetism

Scientific paper

In previous works, the authors used a simple model of the equatorial E and F regions to predict simultaneously zonal neutral and ion velocities and vertical currents at the base of the F region. In this work, the model is extended to include effects not considered previously: ion-neutral drag at the F-region base, the E-region dynamo electric field, and the F-region zonal electric field. The model is used to predict the variables mentioned above as functions of time and latitude. The results of the calculations show first that the ion velocity is quite sensitive to the combination of the three effects, and a substantial improvement over previous results is found upon comparison with measured values. The calculated zonal neutral wind also reveals the influence of ion drag through its latitudinal variations. Finally, the current density perpendicular to the geomagnetic field exhibits two pronounced peaks of the order of 10 to the -7th A/sq m at sunrise and sunset at the dip equator.

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