Observational and theoretical studies of a cross meridian refraction of VLF waves in the ionosphere and magnetosphere

Details Observational and theoretical studies of a cross meridian refraction of VLF waves in the ionosphere and magnetosphere Observational and theoretical studies of a cross meridian refraction of VLF waves in the ionosphere and magnetosphere

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jatp...42...51d&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 42, Jan. 1980, p. 51-60.

Physics

1

Ionospheric Propagation, Magnetospheric Instability, Radio Wave Refraction, Signal Analysis, Ariel 3 Satellite, Ariel 4 Satellite, Daytime, Night Sky, Ray Tracing, Very Low Frequencies

Scientific paper

The signals at an altitude of 500-600 km from two ground-based transmitters (GBR, NAA) at frequencies of 16.0 kHz and 17.8 kHz, respectively, have been studied in experiments aboard the satellites Ariel 3 and Ariel 4. Refraction of whistler mode energy in a direction perpendicular to the local magnetic meridian has been observed and measured. The direction of the refraction reverses between day-time and night-time and correlates with the reversal of that component of the refractive index vector due to cross meridian gradients of electron density. Ionospheric and magnetospheric ray tracings have provided estimates of the cross meridian electron density gradients required to give the observed refraction.

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