Electrodynamics in the low and middle latitude ionosphere: a tutorial

Details Electrodynamics in the low and middle latitude ionosphere: a tutorial Electrodynamics in the low and middle latitude ionosphere: a tutorial

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jastp..66..825h&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 66, Issue 10, p. 825-838.

Physics

68

Ionosphere Electrodynamics, Wind Dynamo

Scientific paper

Electric fields in the low and middle latitude ionosphere result from currents driven internally by neutral winds and gravity, and externally by applied potentials. The resulting internal electric polarization fields arise from the need to make the total current divergence free. By considering the current drivers many of the attributes of the observed ion and electron drifts can be understood including the E- and F-region dynamos, the initial growth of ionospheric depletions, and effects from high latitudes. Such an exercise leads to an overall understanding of the governing principles. However, it is necessary to know all the large-scale spatial gradients in the drivers, many of which are presently unknown, in order to unravel the outstanding mysteries of the electrodynamics of the region.

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