Evidence for sheet-like auroral ionospheric irregularities

Details Evidence for sheet-like auroral ionospheric irregularities Evidence for sheet-like auroral ionospheric irregularities

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5.1039r&link_type=abstract

Geophysical Research Letters, vol. 5, Dec. 1978, p. 1039-1042.

Physics

6

Auroral Zones, Ionospheric Electron Density, Ionospheric Propagation, Plasma Layers, Radio Waves, Scintillation, Diffraction Patterns, Electron Density Profiles, Geomagnetism, Irregularities

Scientific paper

A uniquely located, statistically prominant radiowave scintillation enhancement has been identified in nighttime auroral-zone data. The enhancement occurs whenever the propagation path coincides with an L-shell in the region of diffuse auroral particle precipitation. It is hypothesized that this enhancement is a purely geometric effect due to sheet-like ionospheric irregularity structures aligned along L-shells. This hypothesis is confirmed by spaced-receiver data showing that the diffraction pattern is elongated along the geomagnetic east-west direction when the scintillation enhancement occurs.

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