Physics
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.1981m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, March 1, 1988, p. 1981-1986.
Physics
4
Auroral Echoes, Geomagnetic Micropulsations, Radar Echoes, Doppler Effect, Time Dependence
Scientific paper
Observations from the Sweden and Britain Radar Experiment and the Scandinavian Twin Auroral Radar Experiment are presented of a Pc 5 pulsation which was monochromatic in a reference frame moving in the north-south direction with respect to the radar grid. This reference frame was fixed with respect to a boundary across which the latitudinal phase variation of the pulsation experienced a distinct discontinuity. The pulsation was embedded in westward or convection flow, and its azimuthal wave number was low. The data are reminiscent of those of a double resonance but nevertheless differ in significant ways. The event is discussed in terms of recent theoretical developments which, however, are not found to provide an adequate explanation.
McDiarmid D. R.
Nielsen Edward
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