Ionospheric currents induced by solar wind interaction with planetary atmospheres

Details Ionospheric currents induced by solar wind interaction with planetary atmospheres Ionospheric currents induced by solar wind interaction with planetary atmospheres

Mar 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973p%26ss...21..463c&link_type=abstract

Planetary and Space Science, Volume 21, Issue 3, p. 463-474.

Computer Science

10

Scientific paper

In a steady-state model for the interaction of the solar wind with the atmosphere of a non-magnetic planet, the magnetized solar wind acts as a dynamo over the dayside of the planet and induces Ohmic currents in the planet's ionosphere. A model for the dynamo mechanism and for the induced current configuration is developed. Based on this model and assumed model atmospheres of Mars and Venus, the distribution of currents entering the ionosphere through the ionopause is calculated. The requirement that the total current be of such a magnitude as to cancel the shock-compressed interplanetary magnetic field fixes the ionopause altitude. The calculations for Venus are in reasonable agreement with observations. The calculations for Mars indicate the possibility of an observable ionopause in the altitude range from 325 to 425 km.

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