Ion-neutral collisions and the equatorial electrojet

Details Ion-neutral collisions and the equatorial electrojet Ion-neutral collisions and the equatorial electrojet

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jatp...51..947s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 51, Nov.-Dec. 1989, p. 947-951.

Physics

Equatorial Electrojet, Ion Atom Interactions, Scattering Cross Sections, Atmospheric Attenuation, Atmospheric Density, Electrical Resistivity

Scientific paper

There are various theoretical models of ion-neutral collision and the resultant collision frequencies differ significantly in their values. Also there is a range of uncertainty associated with each of the theoretical values of the collision frequencies. The effects of the differing theoretical values and the uncertainty in the ion-neutral collision frequencies on the estimates of the equatorial electrojet (EEJ) current strength are examined numerically. It is found that the differences in various ion neutral collision frequency models affect the amplitude of the EEJ, but leave the peak altitude of the EEJ nearly unchanged. However, modification to the collision frequency by the order of its uncertainty does change the peak altitude of the EEJ by at least 2 km.

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