Electron density and energetic particle precipitation observed during the eclipse of 26 February 1979

Details Electron density and energetic particle precipitation observed during the eclipse of 26 February 1979 Electron density and energetic particle precipitation observed during the eclipse of 26 February 1979

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jatp...45..427s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 45, July 1983, p. 427-436.

Computer Science

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9

D Region, E Region, Electron Precipitation, Energetic Particles, Ionospheric Electron Density, Solar Eclipses, Electron Density Profiles, Flux (Rate), Ionospheric Sounding, Rocket Sounding, Solar Terrestrial Interactions

Scientific paper

Electron density profiles and energetic particle fluxes are obtained based on data collected by two rockets launched from Red Lake, Ontario, respectively, at the beginning and end of totality during the solar eclipse of February 26, 1979. Data obtained by a rocket launched on February 24, 1979 showed that the electron density was normal (at 10,000 cu cm) above 110 km, to rocket apogee (130.5 km). Below 110 km, the electron density was found to be enhanced compared with data from Wallops Island at the same solar zenith angle (63 deg). It is proposed that this enhancement was due to the large flux of field-aligned energetic particles observed on the same rocket. The electron density above 110 km to rocket apogee (132.6 and 132. 3 km) was found to be reduced during totality by a factor of about three. However, below 110 km, the electron density was found to be much greater than observed during previous eclipses, probably due to the additional ionization resulting from energetic particles. The particle flux measured on February 26 was found to be an order of magnitude less than on February 24 but showed greater variability, particularly at the higher energies (100 keV).

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