Global scale electrodynamic coupling of the auroral and equatorial dynamo regions

Details Global scale electrodynamic coupling of the auroral and equatorial dynamo regions Global scale electrodynamic coupling of the auroral and equatorial dynamo regions

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jatp...41..189r&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 41, Feb. 1979, p. 189-201.

Physics

19

Auroral Zones, Dynamo Theory, Electrodynamics, Equatorial Electrojet, Backscattering, Electric Fields, Radar Measurement, Radar Scattering

Scientific paper

VHF backscatter radar observations of the equatorial electrojet at Thumba, India show that most of the bay-type disturbances in the surface geomagnetic field, with typical durations of 20-50 min, result from corresponding fluctuations of the overhead currents in the ionospheric dynamo region. Even minor disturbances in the dynamo-region electric fields at auroral and polar latitudes are found to result in observable perturbations in the equatorial electrojet. Detailed analyses of two disturbance events are presented.

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