Implications of a steady-state magnetospheric convection

Details Implications of a steady-state magnetospheric convection Implications of a steady-state magnetospheric convection

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986p%26ss...34..315l&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 34, March 1986, p. 315-318.

Physics

2

Atmospheric Electricity, Magnetospheric Instability, Space Plasmas, Convection, Potential Fields, Time Dependence

Scientific paper

Fundamental to the development of many magnetospheric theories is the assumption of a steady-state magnetospheric convection. It is shown for the first time that this basic assumption is implicitly related to the source of magnetospheric plasma. The existence of a steady-state electric field is consistent with plasma entry into the magnetosphere from the North-South direction. If plasma entry is through the flanks of the magnetosphere, the large-scale magnetospheric electric field is intrinsically time-dependent. Thus, magnetospheric theories with the underlying assumption that the large-scale electric field is derivable from a scalar potential cannot deal with such a situation. Therefore, the origin of magnetospheric plasma and the time-variability of magnetospheric convection are directly related.

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