The relationship of Pc 5 micropulsation activity in the morning sector to the auroral westward electrojet

Details The relationship of Pc 5 micropulsation activity in the morning sector to the auroral westward electrojet The relationship of Pc 5 micropulsation activity in the morning sector to the auroral westward electrojet

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978p%26ss...26..473l&link_type=abstract

Planetary and Space Science, vol. 26, May 1978, p. 473-492. Research supported by the National Research Council of Canada.

Physics

5

Auroral Electrojets, Geomagnetic Micropulsations, Morning, Convection Currents, Hall Effect, Ionospheric Currents, Magnetic Measurement, Magnetic Signatures, Polarization Characteristics, Power Spectra

Scientific paper

Data from a line of magnetometers stretching along a corrected geomagnetic meridian approximately 302 degrees E through western Canada are used to study the relationship between the convection westward electrojet and Pc 5 micropulsations in the morning sector. It was found that the dominant spectral bands in the Pc 5 range occur within the same latitudinal range occupied by the electrojet. The intensity contours and the character of the polarization parameters clearly show that the Pc 5 activity tracks the westward convection electrojet. The Pc 5 activity is found to be enhanced in conjunction with rapid configurations of the electrojet. Evidence of spatial oscillations of the borders of the electrojet and variations in the intensity of the electrojet is presented. It is concluded from our study that the Pc 5 activity in the morning sector is closely related to the convection westward electrojet and its associated three-dimensional current system

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