Computer Science
Scientific paper
Dec 1973
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973p%26ss...21.2089l&link_type=abstract
Planetary and Space Science, Volume 21, Issue 12, p. 2089-2112.
Computer Science
1
Scientific paper
A quantitative theoretical analysis of electric field and current distributions in the ionosphere is given assuming certain time variable convection field profiles at an altitude of 1250 km. A number of idealized assumptions regarding the ionospheric characteristics are defined and discussed. A qualitative discussion of a quasi-stationary configuration with an approximately curl free electric field is also given. Geomagnetically field aligned current densities i∥ of the order 10-5-10-4A/m2 are consistent with quite reasonable assumptions about the convection field E⊥. Oscillations in E⊥ with periods of the order of 10 sec should readily be generated when σ∥ is large. In the quasi-stationary case there may be a mechanism that strengthens and concentrates i∥ locally under certain conditions. It is found that a number of recent high altitude observations of convection field reversals may be consistent with large potential drops along the magnetic field lines. The solutions obtained as well as some of the basic assumptions are compared with observations.
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