Physics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31..435s&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 31, April 1983, p. 435-458. Research supported by the Natural Sciences and En
Physics
53
Auroral Electrojets, Geomagnetic Micropulsations, Ionospheric Currents, Magnetic Storms, Polarization (Charge Separation), Auroral Arcs, Electron Precipitation, Field Aligned Currents, Hall Effect, Picosecond Pulses, Power Spectra, Riometers
Scientific paper
The study of Rostoker and Samson (1981) is extended, taking in features of Pi2's in and near the region of the westward traveling surge (WTS). Particular emphasis is placed on choosing simple, isolated onsets and on a careful correlation of the Pi2's morphology with the behavior of the ionospheric currents and field aligned current (FAC) in the surge. Attention is called to the work of Pashin et al. (1982), in which some of the polarization features of Pi2's near the auroral breakup region and head of the WTS have been outlined. It is noted that they found that the maximum in Pi2 intensity was near the head of the WTS, where the most intense luminosity of the aurora is located. With regard to polarization characteristics, they found a four-quadrant pattern for the Pi2's, with the center of the pattern coincident with the head of the WTS. Even though the results presented here agree with those of Pashin et al. in some details, it is found that the spatial character of the polarization pattern deviates from the four-quadrant picture suggested by both Pashin et al. and Kuwashima and that the intensity maximum of the Pi2 is not necessarily at the head of the WTS.
Rostoker Gordon
Samson John C.
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