Other
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ge%26ae..22..985m&link_type=abstract
Geomagnetizm i Aeronomiia, vol. 22, Nov.-Dec. 1982, p. 985-990. In Russian.
Other
Geomagnetic Pulsations, Ionospheric Currents, Lines Of Force, Polar Caps, Traveling Ionospheric Disturbances, Circular Polarization, Electric Dipoles, Field Aligned Currents, Geomagnetic Micropulsations, Ionospheric Conductivity, Magnetic Dipoles, Polarization Characteristics
Scientific paper
A theoretical study is presented of the penetration of geomagnetic pulsations excited in one polar cap in the region of open field lines to the other polar cap. It is shown that this phenomenon is associated with the flow of ionospheric disturbance currents from one hemisphere to the other along the boundary of the region of closed magnetic field lines. In the case of long-period oscillations and symmetric conditions in the northern and southern polar caps, the effect of the ionosphere of the opposite hemisphere produces a 1.5-fold increase in the electric currents flowing from the source to the boundary of the polar cap. In the case of short-period oscillations, a part of the field-aligned current flowing between the hemispheres branches into polarization currents. As a result, the electric field and currents in the ionosphere of the opposite hemisphere can decrease significantly compared with the case of long-period oscillations.
Liatskii V. B.
Maltsev Iu. P.
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