Radio-auroral scattering at two closely spaced frequencies
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Published:1980-10-01
Issue:10
Volume:58
Page:1485-1491
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ISSN:0008-4204
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Container-title:Canadian Journal of Physics
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language:en
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Short-container-title:Can. J. Phys.
Author:
Sinclair I. P. W.,Forsyth P. A.
Abstract
Two radio frequencies near 40 MHz and separated by 500 Hz were used to investigate the type of radio-auroral scattering which arises in ion-acoustic waves. The results confirm those of Haldoupis and Sofko who found that individual ion-acoustic wave trains have lifetimes of only tenths of seconds. In addition it was found that instantaneous signal amplitudes on these two frequencies were sometimes poorly correlated indicating the coexistence of widely separated ion-acoustic wave trains. It appears that the radio-auroral scattering region is typically large but within it individual ion-acoustic wave trains grow and decay rapidly. Significant periodicities were found in the signals and these are attributed to magnetospheric modulation of the auroral process.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
1 articles.
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