Computer Science – Numerical Analysis
Scientific paper
Jul 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975p%26ss...23.1071a&link_type=abstract
Planetary and Space Science, vol. 23, July 1975, p. 1071-1080.
Computer Science
Numerical Analysis
Atmospheric Tides, F 2 Region, Ionospheric Drift, Ionospheric Electron Density, Lunar Tides, Continuity Equation, Diurnal Variations, Geomagnetism, Magnetic Equator, Numerical Analysis, Photoionization, Solar Activity Effects
Scientific paper
Variations in both NmF2 and hmF2 resulting from the interaction of solar drift and lunar tidal effects are analyzed on the basis of a numerical solution of the full time-varying continuity equation for the F2-layer ionization. Terms representing production by photoionization, loss by recombination, diffusion and electrodynamic E X B drift are included. The lunar component of drift is assumed to be sinusoidal with a period half a lunar day and amplitude one tenth of the solar drift amplitude. Lunar variations are found to be highly dependent on magnetic latitude and solar time. The average semi-diurnal lunar variations at any given lunar time are out of phase by about 6 hours in the magnetic equatorial zone and out of phase by about 2 hours at moderate latitudes. The phase of NmF2 undergoes a rapid shift of about 5 lunar hours in going from 8 to 12 deg. These results are in good accord with experimental data.
Abur-Robb F. K. M.
Dunford E.
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