Differential rotation of the magnetospheric plasma as cause of the Svalgaard-Mansurov effect

Details Differential rotation of the magnetospheric plasma as cause of the Svalgaard-Mansurov effect Differential rotation of the magnetospheric plasma as cause of the Svalgaard-Mansurov effect

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80.2311v&link_type=abstract

Journal of Geophysical Research, vol. 80, June 1, 1975, p. 2311-2315.

Physics

2

Earth Magnetosphere, Geomagnetism, Interplanetary Magnetic Fields, Ionospheric Currents, Magnetic Variations, Rotating Plasmas, Electric Fields, Magnetohydrodynamics, Mathematical Models, Plasma Dynamics, Polar Caps

Scientific paper

A correspondence between the geomagnetic variations at the geomagnetic poles and the sector polarity of the interplanetary magnetic field was discovered independently by Svalgaard (1968) and by Mansurov (1969). Heppner (1972) noted a dawn-dusk asymmetry in the magnetospheric electric convection field observed by the Ogo 6 satellite within the polar caps at ionospheric altitudes. This asymmetry is also related to the sector polarity of the interplanetary magnetic field. It is shown that both effects can be consistently explained by differential rotation of the magnetospheric plasma with respect to the earth.

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