Pi(c) magnetic pulsations - Their relation to ionospheric currents

Details Pi(c) magnetic pulsations - Their relation to ionospheric currents Pi(c) magnetic pulsations - Their relation to ionospheric currents

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jatp...50..231b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 50, March 1988, p. 231-241.

Physics

5

Auroral Zones, Geomagnetic Pulsations, Ionospheric Currents, Cross Correlation, Geomagnetism

Scientific paper

The association of the phase of the H and D components of the Pi(c) pulsations with the phase of the broadscale H component magnetic bays confirms that Pi(c) pulsations result from auroral electron precipitation induced conductivity enhancements of existing current systems. Statistically determined relationships between the time delays and phases of the H and D components of magnetic Pi(c) pulsations with respect to the optical pulsations are used to infer a delay between the E-region Hall and Pedersen current fluctuations associated with the pulsating electron fluxes. Theoretical modeling of an auroral pulsation patch, as per Oguti and Hayashi, is used to show that the polarization of the Pi(c) pulsations is controlled principally by the delay between the Hall and Pedersen currents and the direction of the background E-region electric field.

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