Calculation of the vertical drift of the sodium ion

Details Calculation of the vertical drift of the sodium ion Calculation of the vertical drift of the sodium ion

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983angeo...1..509k&link_type=abstract

Annales Geophysicae (ISSN 0755-0685), vol. 1, Nov.-Dec. 1983, p. 509-513.

Physics

Ionospheric Drift, Sodium, Vertical Motion, Wind Shear, Atmospheric Tides, E Region, Electric Fields, Positive Ions

Scientific paper

The effect of the sodium ion in sodium layer theory is treated in relation to wind shear theory by calculating semidiurnal and diurnal tides, together with the effect of an ionospheric electic field, while accounting for variable ion velocity. The 86-100-km region at low latitudes is considered. A downward motion of the ion convergence is obtained, but only for one-half of the diurnal center. The net vertical velocity tends to decrease when the electric-field-induced vertical ion velocity component is included. During the dark hours, the electric-field-induced vertical ion velocity tends to inhibit the downward motion of the ion convergence center, which remains fixed at 99 km between 4 and 8 hours. The downward motion of the center during sunlit hours (10 to 16 hours) is also effective in the presence of the electric field, which increases the height of the center by only 1 km.

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