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F region electron density irregularity spectra near auroral acceleration and shear regionsTwo orbits of the Atmosphere Explorer D yielded data on F region electron irregularities in the high latitude ionosphere. Data were taken with a retarding potential analyzer, an ion drift meter, a low energy electron experiment and a photoelectron spectrometer. Auroral forms were simultaneously visually sighted by DMSP spacecraft. The irregularities were associated with auroral excitation and large structured flow regions. Steep spectra with one-dimensional spectral index values for wavelengths over 1 km were observed in the acceleration region. Large amplitude irregularities appeared in large structured flow regions and displayed shallow spectra, indicating the presence of large power spectral densities at scale lengths of about 100 m. It is suspected that large velocities or shears in the velocities in adjacent precipitation regions cause the F region density perturbations.
Document ID
19840058831
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Basu, S.
(Emmanuel Coll. Boston, MA, United States)
Basu, S.
(Emmanuel Coll. Boston, MA, United States)
Mackenzie, E.
(Emmanuel College Boston, MA, United States)
Coley, W. R.
(Emmanuel Coll. Boston, MA, United States)
Hanson, W. B.
(Texas, University Richardson, TX, United States)
Lin, C. S.
(Southwest Research Institute San Antonio, TX, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: Journal of Geophysical Research
Volume: 89
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
84A41618
Funding Number(s)
CONTRACT_GRANT: F19628-84-K-0003
CONTRACT_GRANT: F19628-81-K-0011
CONTRACT_GRANT: NSG-5419
CONTRACT_GRANT: NGR-44-004-120
Distribution Limits
Public
Copyright
Other

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