Causes of the frequency shift of whistler-mode signals

Details Causes of the frequency shift of whistler-mode signals Causes of the frequency shift of whistler-mode signals

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976p%26ss...24..447t&link_type=abstract

Planetary and Space Science, vol. 24, May 1976, p. 447-454. Research supported by the University Grants Committee.

Physics

3

Doppler Effect, Frequency Shift, Ionospheric Propagation, Propagation Modes, Signal Reception, Whistlers, Earth Magnetosphere, Frequency Measurement, Group Velocity, Ionospheric Electron Density, Phase Velocity, Time Measurement

Scientific paper

Whistler-mode signals received at Wellington, New Zealand, from NLK in Seattle are typically Doppler shifted by about 0.1 Hz from the transmitter frequency, implying a changing phase path. At least during quiet times, this is shown to be primarily caused by (inward) drifts of the whistler duct rather than by changing electron density along the path. The mechanism is established by measuring the ratio of the changes in phase and group times for the path during the nights studied. On one of these nights, the drift is further confirmed by measurements on natural whistlers.

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