Interpretation of negative disturbances of electron density during geomagnetic storms

Details Interpretation of negative disturbances of electron density during geomagnetic storms Interpretation of negative disturbances of electron density during geomagnetic storms

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ge%26ae..32...88p&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 32, no. 2, Mar.-Apr. 1992, p. 88-94. In Russian.

Computer Science

F 2 Region, Ionospheric Disturbances, Ionospheric Electron Density, Magnetic Storms, Plasmasphere, Atmospheric Diffusion, Ionospheric Composition, Solar Activity Effects, Thermosphere

Scientific paper

The paper reports results of calculations of electron density and temperature in the midlatitude ionosphere and plasmasphere for noon conditions of the spring equinox for both low and high levels of solar activity and both quiet and disturbed conditions. It is shown that, during geomagnetic storms, the appearance of equatorward-moving thermospheric winds causes an uplift of the F2-layer and an increase in Nm (the electron density in the F2 maximum). Under the wind effect a decrease in the O/N2 concentration ratio results, which leads to a decrease in Nm. The total effect of these factors consists in a decrease in Nm compared with nondisturbed conditions.

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