Physics – Space Physics
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ijrsp...4..132k&link_type=abstract
Indian Journal of Radio and Space Physics, vol. 4, June 1975, p. 132-137. Research supported by the Department of Space of Indi
Physics
Space Physics
1
Equatorial Electrojet, Interplanetary Magnetic Fields, Plasma Density, Solar Wind, Auroral Zones, Earth Magnetosphere, Geomagnetic Tail, Ionospheric Currents, Plasma Dynamics
Scientific paper
A comparative study of the day-to-day changes of equatorial electrojet parameters and interplanetary plasma parameters indicates that the normal noon-time electrojet weakens and the counter-electrojet intensifies when the positive IMF component B sub x (towards sun), the negative component B sub z (southward) and plasma density N increase and the inverse tan (B sub y/B sub x) becomes perpendicular to the garden-hose direction, even on quiet days (Ap = 0.7). It is suggested that interplanetary plasma leaks into the magnetosphere through the geomagnetic tail for selected orientations of the interplanetary field and causes ionospheric currents in the polar/auroral regions which may extend up to the equator.
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