Ionisation in the Antarctic stratosphere

Details Ionisation in the Antarctic stratosphere Ionisation in the Antarctic stratosphere

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jatp...54..235v&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 54, Mar.-Apr. 1992, p. 235-242.

Physics

8

Antarctic Regions, Atmospheric Ionization, Radar Measurement, Relativistic Particles, Stratosphere, Backscattering, Electron Density Profiles, Electron Precipitation

Scientific paper

Results from a partial reflection radar experiment, operated at a frequency of 2.9 MHz at Scott Base, Antarctica, are presented for the time interval from January 1987 to June 1991. It is shown that a layer of ionization can frequently be identified at scattering heights between 40 and 50 km. Details regarding the maximum density, thickness, and frequency of occurrence of this ionization layer are presented. From sequential occurrences of the ionization an approximate life time of 70 min is deduced for the layer. The possibility that the ionization layer is produced by a flux of relativistic electrons is investigated.

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