Ionospheric sources of Pi(c) pulsations

Details Ionospheric sources of Pi(c) pulsations Ionospheric sources of Pi(c) pulsations

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47..587b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 47, June 1985, p. 587-599.

Physics

8

Cross Correlation, Earth Magnetosphere, Geomagnetic Pulsations, Ionospheric Currents, Electrojets, Electromagnetic Pulses, Field Aligned Currents, Histograms, Magnetic Fields

Scientific paper

Data collected at Macquarie Island (invariant latitude 64.5 deg S) shows average delays of 0.6 s and 0.2 s between D and H component Pi(c) pulsations, respectively, and the N2(+) 1NG(0,1) optical band pulsations. The dominant phase of the cross-correlations between the H component pulsations and the optical pulsations is consistent with the H component fluctuations being generated by increases in a westward electrojet. The D component fluctuations are consistent with either an increase in an equatorward Pedersen current or an increase in a field aligned current. The polarization of the Pi(c) pulsations may be explained in terms of the altitude of the respective currents.

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