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The spectrum of electron content fluctuations in the ionosphere.Continuous records of the electron content of the ionosphere, from 1965 to 1970, are used to obtain power spectra covering periods from 30 sec to 2 yr at latitudes of 34 deg S and 42 deg S. At periods up to 5 min amplitudes were less than 0.2% of the total electron content. Variations produced by gravity waves were very common in the range from 20 to 80 min, with no preferred periods. The amplitude increased during the day, particularly in winter when periodic components predominated. The cutoff at about 17 min was sharply defined, giving a mean scale height for the neutral atmosphere of about 43 km in summer, 47 km on winter days, and 42 km on winter nights.
Document ID
19720032400
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Titheridge, J. E.
(Auckland, University Auckland, New Zealand)
Date Acquired
August 6, 2013
Publication Date
December 1, 1971
Publication Information
Publication: Planetary and Space Science
Volume: 19
Subject Category
Geophysics
Accession Number
72A16066
Funding Number(s)
CONTRACT_GRANT: NGR-52-001-001
Distribution Limits
Public
Copyright
Other

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