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In situ measurements of the spectral characteristics of F region ionospheric irregularitiesThe retarding potential analyzer aboard Ogo 6 has provided high-resolution observations of the ion concentration along the satellite path. Changes in ion concentration as small as 0.03% and at times as small as 0.01% could be measured. Spatial resolution varied from 35 to 380 m. Samples of data have been analyzed to determine the spectral properties of the F region irregularities observed. The most common frequency spectrum observed suggests that the responsible irregularities result from the turbulent dissipation of larger irregularities. At the equator, the larger irregularities are probably produced by convective electric fields. At high latitudes, electric fields may also be involved, but other factors such as precipitating particles may contribute to, or be primarily responsible for, the production of large irregularities. Examples of other types of spectra associated with wavelike irregularities and with 'ground glass' (high-frequency noise) irregularities are also shown.
Document ID
19740044945
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dyson, P. L.
(Texas, University Dallas, Tex.; La Trobe University, Bundoora, Victoria, Australia)
Mcclure, J. P.
Hanson, W. B.
(Texas, University Dallas, Tex., United States)
Date Acquired
August 7, 2013
Publication Date
April 1, 1974
Publication Information
Publication: Journal of Geophysical Research
Volume: 79
Subject Category
Geophysics
Report/Patent Number
NSSDC-ID-69-051A-03-PM
Accession Number
74A27695
Funding Number(s)
CONTRACT_GRANT: NGL-44-004-001
CONTRACT_GRANT: NAS5-23184
CONTRACT_GRANT: NAS5-9311
CONTRACT_GRANT: NSF GA-31318
Distribution Limits
Public
Copyright
Other

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