Physics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2331p&link_type=abstract
Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2331-2336. Navy-NSF-supported research.
Physics
19
Field Aligned Currents, Geomagnetic Micropulsations, Ionospheric Currents, Plasma Resonance, Magnetometers, Perturbation, Power Spectra, Radar Tracking, Toroidal Plasmas
Scientific paper
It is noted that the resonance theory for monochromatic Pc 5 micropulsations predicts that the toroidal mode resonances should be accompanied by field-aligned current systems. These currents close via Pedersen current in the ionosphere, and it is thought that the drifting irregularities observed by the STARE (Scandinavian twin auroral radar experiment) radars are generated by the associated electric fields. Recent theoretical calculations by Walker (1980) are used in estimating the micropulsation current systems and accompanying magnetic perturbations. A comparison is then made between STARE radar observations of the pulsation electric field in the ionosphere and the corresponding magnetic perturbation observed with the TRIAD satellite magnetometer.
Nielsen Edward
Potemra Thomas A.
Poulter E. M.
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