Geomagnetic solar-flare effect and ionospheric induction

Details Geomagnetic solar-flare effect and ionospheric induction Geomagnetic solar-flare effect and ionospheric induction

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ijrsp...7....1r&link_type=abstract

Indian Journal of Radio and Space Physics, vol. 7, Feb. 1978, p. 1-5.

Physics

Space Physics

1

Dynamo Theory, Geomagnetism, Ionospheric Currents, Magnetic Variations, Solar Flares, Solar Terrestrial Interactions, D Region, Geomorphology, Ionospheric Conductivity, Magnetic Induction, Solar Activity Effects

Scientific paper

The dynamo theory of the ionospheric current system during a solar flare is studied taking the vector-potential term (i.e., the induction effect) into consideration. A realistic form for the ionospheric conductivity is used. It is noticed that the effect of the induction current is to introduce a time lag of several minutes between the maximum phases of the crochet currents all over the world, as has been deduced by previous morphological analyses. It is further concluded from the calculation that the flare-time current pattern is distinctly different from an augmented Sq field, as also observed by morphological analysts.

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