Effects of greatly increased O(+) loss in the ionospheric F-region

Details Effects of greatly increased O(+) loss in the ionospheric F-region Effects of greatly increased O(+) loss in the ionospheric F-region

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40.1631m&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 12, p. 1631-1637.

Physics

5

F Region, Ionospheric Drift, Ionospheric Ion Density, Oxygen Atoms, Oxygen Ions, Positive Ions, Atmospheric Models, Plasmasphere, Transport Properties

Scientific paper

A model of the ionosphere and plasmasphere is used to study some of the signatures of an idealized SAID (subauroral ion drift) event in the nightside ionosphere. A closed subauroral tube of plasma is considered under solar maximum atmospheric conditions and the westward velocity of 3 km/s persists for 30 min. By pursuing, in turn, calculations in which plasma diffusion is suppressed and in which chemical loss of O(+) is suppressed, the signatures of O(+) chemistry alone and of field-aligned diffusion alone during the SAID event can be elucidated. Both chemical loss and transport contribute to the decay of the F-layer. Results from full calculations (including both chemistry and transport) demonstrate strong chemical-transport interaction.

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