Observations of a day-time mid-latitude ionospheric trough

Details Observations of a day-time mid-latitude ionospheric trough Observations of a day-time mid-latitude ionospheric trough

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47.1111p&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 47, Nov. 1985, p. 1111-1121.

Computer Science

Sound

9

Daytime, Ionosondes, Ionospheric Electron Density, Ionospheric Sounding, Midlatitude Atmosphere, E Region, F 1 Region, F 2 Region, Ionograms, Space Plasmas, Summer

Scientific paper

A summer, dayside, midlatitude trough detected by a digital ionosonde located at Halley (76 deg S, 27 deg W, L = 4.2) is described. The trough is found to be present in the F2-region only and its movements are found to conform to known trough dynamics. The F1-layer shows a greater degree of development within the trough; slant type sporadic E reflections are present underneath the trough minimum. Satellite data from the Northern Hemisphere show a conjugate trough, with rapid ion flow occurring within it. Possible formation processes for the trough are examined. It is unlikely that depleted nightside plasma could have contributed to the trough. The trough is formed by the effect of enhanced F2 recombination rates combined with a differing solar production term for the plasma associated with the trough minimum and equatorial edge.

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