Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.191..203b&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 191, no. 2, May 1992, p. 203-211. Research supported by UGCI.
Astronomy and Astrophysics
Astrophysics
1
E Region, Equatorial Electrojet, Ionospheric Drift, Ionospheric Electron Density, Photoionization, Current Density, Ionospheric Composition, Ionospheric Heating, Solar Terrestrial Interactions
Scientific paper
The equatorial electrojet parameters were evaluated for an equatorial station at Thumba (India), using the electron density, electron temperature, and current density profiles obtained on two rocket flights (March 3, 1973 and April 7, 1972) around local noon, corresponding to low and medium solar active conditions. In order to determine whether or not electromagnetic drift (EMD) plays an important role, the balance between the production and the loss rates of photoionization was computed for the latest available solar flux, using cross sections and chemical reaction rate constants for appropriate solar epoch conditions, including the transport term due to EMD. Excellent agreement was found between the computed and the observed electron density profiles, indicating the importance of the transport term due to EMD.
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