Journal ArticleDOI
Dispersive motions of ionospheric irregularities
TLDR
In this paper, the effects of a vertical velocity component upon the conventional horizontal spaced receiver measurements are carefully analyzed and the correlation between multi-frequency scintillation records of a radio star is investigated.About:
This article is published in Journal of Atmospheric and Solar-Terrestrial Physics.The article was published on 1970-03-01. It has received 6 citations till now. The article focuses on the topics: Correlation function (statistical mechanics) & Skewness.read more
Citations
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Journal ArticleDOI
Modeling of spaced‐receiver scintillation measurements
A. W. Wernik,C. H. Liu,K. C. Yeh +2 more
TL;DR: In this article, the effects of velocity distribution of scatterers, diffusion of irregularities and velocity gradient across the scattering layer on parameters derived from spaced-receiver scintillation experiments are considered.
Journal ArticleDOI
Phase velocity dispersion of F-region waves
T.J. Herron,T.J. Herron +1 more
TL;DR: A phase velocity dispersion study of lower F -region ionospheric waves, in the 10-100 min period range, has shown that the horizontal phase velocity varies approximately as the inverse square root of the period, a relationship which implies that horizontal group velocity is twice phase velocity at all periods.
Journal ArticleDOI
Dispersive motions in the ionosphere
D Jones,A.D. Maude +1 more
TL;DR: In this article, a number of dispersion analysis results for the E -region showing marked dispersion is presented, and comparisons are made with the results of conventional analysis methods, in particular, the full correlation method has no advantage over the similar fades method as far as the velocity vector is concerned.
Journal ArticleDOI
Dispersive Motions in the F-Region of the Equatorial Ionosphere
TL;DR: In this paper, some results of "dispersion" analysis of F-region drift data obtained at Ibadan (dip 6°S) are presented, which suggest that in the correlation analysis the apparent velocity probably measures the motion better than the true velocity, whether or not dispersion is present.
Journal ArticleDOI
Dispersive motions in the equatorial ionosphere
TL;DR: In this paper, the results of the dispersion analysis of the spaced receiver records of fading for an equatorial station in the Indian zone are discussed and it is shown that the apparent drift speed increases almost linearly with the frequency of fading in all the cases studied for both the E and F regions.
References
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Book
Spectral analysis and its applications
TL;DR: In this paper, Spectral Analysis and its Applications, the authors present a set of applications of spectral analysis and its application in the field of spectroscopy, including the following:
Journal ArticleDOI
Measurement and interpretation of power spectrums of ionospheric scintillation at a sub-auroral location
TL;DR: In this paper, the power density spectrum of ionospheric scintillation of a radio star and satellites, at a subauroral location, has revealed the following: (1) Scintillations generally display a "pink" noise spectrum, with almost uniform spectral density at frequencies below ∼ 0.01 Hz, and decreasing spectral density in frequencies above this value, with n being typically 2.7 (i.e., a decrease of 8 db per octave).
Journal ArticleDOI
Evidence for Wave Motions in the E -Region in the Ionosphere
D. I. H. Jones,A. D. Maude +1 more
TL;DR: In this article, the authors test the hypothesis that the scattering irregularities of electron density were due to hydrodynamic waves travelling horizontally in the ionosphere, rather than the movement being a drift of the medium as a whole.
Journal ArticleDOI
Observations of travelling ionospheric disturbances using stationary satellites
Terence J. Elkins,F.F. Slack +1 more
TL;DR: In this paper, an unusual regular type of fading, apparently due to diffraction from moving ionospheric formations, is deduced to result from electron density discontinuities, with linear gradients ~700 cm −3 m −1, and located usually near the F -region maximum, which travel in a generally equatorwards direction at ~50-120 m/sec.
Journal ArticleDOI
A test for dispersion in F-region drifts observed by the radio star scintillation method
B.H. Briggs,M.G Golley +1 more
TL;DR: In this article, the authors used three spaced interferometers to determine whether Fourier components of different frequencies give different values of drift velocity, and in most cases the speed of drift increases with frequency, while the direction of drift does not change.