Computer Science – Sound
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.2941r&link_type=abstract
Journal of Geophysical Research, vol. 85, June 1, 1980, p. 2941-2948.
Computer Science
Sound
3
Auroral Zones, Ionospheric Sounding, Night Sky, Satellite Sounding, Scintillation, Ionospheric Currents, Ionospheric Disturbances, Ionospheric Electron Density, Magnetic Field Configurations
Scientific paper
Simultaneous observations of the polar-orbiting Wideband satellite at two auroral zone stations were made during November 1977. The latitudinal distribution of the average scintillation occurrence at each station shows a local maximum at the point where the propagation vector lies within an L shell. This supports the hypothesis that the enhancement is a geometrical effect due to L shell aligned, sheetlike irregularities. The detailed structure of the average scintillation occurrence and of scintillation patterns on individual passes shows, however, that the source regions are confined in latitude. From a detailed analysis of total electron content data it was shown that the local scintillation enhancements occur in a region of enhanced F region ionization with a steep gradient at its equatorward edge. These results are discussed in light of analysis by Osakow and Chaturvedi (1979) that shows that the current convective instability can explain the irregularities.
Owen Jacqueline
Rino C. L.
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