Mechanisms for observed total electron content pulsations at midlatitudes

Details Mechanisms for observed total electron content pulsations at midlatitudes Mechanisms for observed total electron content pulsations at midlatitudes

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49..231p&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, March 1987, p. 231-236. Research supported by the Mini

Physics

18

Atmospheric Ionization, F Region, Geomagnetic Micropulsations, Ionospheric Electron Density, Midlatitude Atmosphere, Advection, Divergence, Ionospheric Conductivity, Photoionization

Scientific paper

Total electron content variations in the Pc3-Pc4 range of frequencies of the order of 4 parts in 10,000 have been reported in apparent correlation with simultaneous ground based magnetic pulsation observations. By means of a term-by-term analysis of the continuity equation for electrons, the plausibility of various mechanisms is investigated. The most likely explanation is in terms of localized increases in the electron density at F-region heights caused by the field-aligned (compressional) component of the pulsation magnetic field. The analysis predicts a tendency for the amplitude of the TEC pulsations to vary in antiphase with ground-based measurements of the north-south component of the pulsation field.

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