Physics
Scientific paper
Mar 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37..419k&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 37, Mar. 1975, p. 419-428. Research supported by the Instituto de Pesquisa
Physics
Diurnal Variations, Drift Rate, F Region, Ionospheric Drift, Dynamo Theory, Electric Fields, Incoherent Scattering, Night Sky, Radar Scattering, Velocity Distribution
Scientific paper
Drift measurements perpendicular to the magnetic field are examined, taking into account also some nighttime measurements. Nighttime measurements of drift velocities are more difficult because densities are lower. However, the uncertainty in the drift velocities can be optimized by making use of an approach reported by Kirchhoff (1973). The approach involves a careful selection of the elevation angle of the radar antenna. Measured velocities are discussed along with the magnetospheric perturbation effect. The measurements are compared with conclusions of the dynamo theories.
Carpenter L. A.
Kirchhoff W. J. H. V.
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