A Satellite Survey of Vector Electric Fields in the Ionosphere at Frequencies from 10 to 500 Hertz. 3. Low Frequency Equatorial Emissions and Their Relationship to Ionospheric Turbulence.
CALIFORNIA UNIV BERKELEY SPACE SCIENCES LAB
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Occasional observations of intense low frequency electric field fluctuations have been detected near the magnetic equator by the vector ac electric field experiment performed on the OV1-17 satellite which was in a circular polar orbit at an altitude of about 400 kilometers. The observed fluctuations are correlated with spread F at an equatorial ground station located near the projection of vehicle trajectory The observed fluctuations are correlated with spread F at an equatorial ground station located near the projection of the vehicle trajectory onto the surface of the earth. This correlation suggests that the ionospheric electric field turbulence is related to the modification of the propagation of radio waves resulting in scattering of the radio signals from irregularities of the medium. The polarization, intensity and spectral characteristics of the signal are similar to the high latitude low frequency electric fields detected on every orbit of OV1-17 and which were described in paper 1 of this series. Author
- Atmospheric Physics