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Atmospheric wave-induced instability in the nighttime E-region.Examination of the perturbed continuity equation when the perturbations are the result of an internal atmospheric gravity wave in the E region. The transient response of the ionization is interpreted as the gradient instability and the values of the vertical and horizontal wave numbers that will induce it are plotted for various heights. Only in the presence of westward directed electric fields, which are believed to occur only at night, will the gravity waves induce the gradient instability. Approximate analytic expressions are obtained for the permitted wave numbers as well as for the instability growth times. In the course of this analysis it is shown that in the D region all irregularities, even those that are field-aligned, will tend to move with the ion velocity.
Document ID
19730029793
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Beer, T.
Moorcroft, D. R.
(Western Ontario, University London, Ontario, Canada)
Date Acquired
August 7, 2013
Publication Date
December 1, 1972
Publication Information
Publication: Journal of Atmospheric and Terrestrial Physics
Volume: 34
Subject Category
Geophysics
Accession Number
73A14595
Funding Number(s)
CONTRACT_GRANT: NGR-05-009-076
Distribution Limits
Public
Copyright
Other

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