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Thermal response of the F region ionosphere in artificial modification experiments by HF radio wavesThe thermal response of the nighttime F region ionosphere to local heating by HF radio waves has been observed with the incoherent scatter radar at Arecibo, Puerto Rico. The observations consist of high-resolution space and time variation of the electron temperature as a high-power HF transmitter is switched on and off with a period 240 s. As soon as the HF transmitter is turned on, the electron temperature begins to rise rapidly in a narrow altitude region near 300 km, below the F2 layer peak. The electron temperature perturbation subsequently spreads over a broader altitude region. The observations are compared with the anticipated thermal response of the ionosphere based on numerical solutions of the coupled time-dependent heat conduction equations for the electron and composite ion gases and are found to be in good agreement over the entire altitude region covered by the observations.
Document ID
19810040179
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mantas, G. P.
(Crete, University Herakleion, Greece)
Lahoz, C. H.
(Texas, University Richardson, Tex., United States)
Carlson, H. C., Jr.
(Texas Univ. at Dallas Richardson, TX, United States)
Date Acquired
August 11, 2013
Publication Date
February 1, 1981
Publication Information
Publication: Journal of Geophysical Research
Volume: 86
Subject Category
Geophysics
Accession Number
81A24583
Funding Number(s)
CONTRACT_GRANT: NGL-44-004-130
CONTRACT_GRANT: NSF ATM-76-80208
Distribution Limits
Public
Copyright
Other

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