First direct ground-based measurements of electron drift in the ionospheric F region

Details First direct ground-based measurements of electron drift in the ionospheric F region First direct ground-based measurements of electron drift in the ionospheric F region

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....9110178b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Sept. 1, 1986, p. 10178-10182.

Physics

2

F Region, Ionospheric Drift, Plasma Drift, Plasma Frequencies, Doppler Effect, Ion Currents, Ion Scattering, Ionospheric F-Scatter Propagation, Thermosphere

Scientific paper

For the first time, vertical electron drift velocities in the F region of the ionosphere have been directly determined using the Doppler shift of the electron component of the incoherent-scatter spectra. Simultaneous measurements of ion drift velocities were also made. A large difference between the electron and ion velocities of the order of 100 m/s with corresponding currents of 0.00001 A/sq m was observed at sunrise. The most likely source of these currents appears to be the action of the local thermospheric wind on the large conductivity gradients associated with the sunrise line.

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