Coupling between the F-region and protonosphere: Numerical solution of the time-dependent equations

Details Coupling between the F-region and protonosphere: Numerical solution of the time-dependent equations Coupling between the F-region and protonosphere: Numerical solution of the time-dependent equations

Jan 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973p%26ss...21...43m&link_type=abstract

Planetary and Space Science, Volume 21, Issue 1, p. 43-52.

Physics

5

Scientific paper

This paper describes a new method of solution of the time-dependent continuity and momentum equations for H+ and O+ in mid-latitude magnetic field tubes from the F-region to the equator. For each ion the equations are expressed as an integro-differential equation. This equation is treated as an ordinary differential equation and solved by a searching method. By means of this method, the distribution of H+ in the O+-H+ transition region and the protonosphere can be investigated and the influence of H+ fluxes on the F layer examined. As an example of application of the method a suggestion by Park (1971) about observed night-time enhancements of NmF2 is examined. He suggested that lowering of the F layer some hours after a magnetic substorm may cause NmF2 to increase because of increased ion influx from the protonosphere. In the present calculations the Flayer is maintained around a constant height for some time and then abruptly lowered. Under the conditions adopted the resulting increase in downward H+ flux is sufficient to maintain NmF2 against the increased recombination but not to increase NmF2 significantly. It is emphasised that these results are not conclusive.

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