Evolution of the ionosphere

Details Evolution of the ionosphere Evolution of the ionosphere

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.4785s&link_type=abstract

Journal of Geophysical Research, vol. 81, Sept. 1, 1976, p. 4785-4788.

Physics

Atmospheric Composition, Earth Atmosphere, Electron Density Profiles, Ionospheric Electron Density, Primitive Earth Atmosphere, Atmospheric Models, F 2 Region, Nitrogen Ions, Oxygen Ions

Scientific paper

Studies were made of the electron density profiles at various stages of atmospheric evolution, with the assumption that the atmospheric composition has changed due to the gradual increase of oxygen while the nitrogen level has remained constant. The result of model calculations indicates that when the oxygen content is less than about 1% of the present earth's atmosphere level, the major ions in the F2 region will change from O(+) to N(+). The maximum number density of N(+) ions reaches approximately 10 million per cu cm because of the absence of a rapid loss mechanism for N(+). The height of the N(+) ion density peak is much lower than the height of the F2 layer peak of the current ionosphere.

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