Computer Science – Sound
Scientific paper
Feb 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ge%26ae..49...53d&link_type=abstract
Geomagnetism and Aeronomy, Volume 49, Issue 1, pp.53-57
Computer Science
Sound
3
94.20.Ji, 94.20.Dj, F Region
Scientific paper
The variability degree of the F 2-layer height, hmF2, from the 1950s-1960s to the 1990s has been analyzed based on the vertical sounding data for a series of midlatitude ionospheric stations. It has been found that the scatter of the hmF2 values (standard deviation) abruptly increases from the earlier decades to the later ones. This increase is more evident in the spring period of the year and is independent of geomagnetic activity. An increase in the scatter of hmF2 apparently indicates systematic changes (trends) in the thermospheric dynamics, the existence of which was suggested in the recent publications of the authors.
Danilov Aleksei Dmitrievich
Vanina-Dart L. B.
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