Journal ArticleDOI
Atmospheric gravity waves launched by auroral currents
G. Chimonas,Colin O. Hines +1 more
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TLDR
In this article, a model calculation is performed by which the magnitude and form of the anticipated atmospheric wave train may be assessed, and both are found to be consistent with observations already recorded, but the question as to whether the Lorentz force or the Joule dissipation is the more important exciting agency provided by the current, is left unanswered because of present uncertainties connected with the nature of the current itself.About:
This article is published in Planetary and Space Science.The article was published on 1970-04-01. It has received 179 citations till now. The article focuses on the topics: Atmospheric wave.read more
Citations
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Atmospheric gravity waves induced by a solar eclipse, 2
G. Chimonas,Colin O. Hines +1 more
Journal ArticleDOI
A theory of medium-scale traveling ionospheric disturbances
TL;DR: In this paper, the average fluctuations of the auroral electrojet are shown to be sufficient to generate sizable medium-scale traveling ionospheric disturbances (TID's) that propagate to large horizontal distances with no loss of amplitude despite the absence of ducting mechanisms.
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Internal gravity-wave motions induced in the Earth’s atmosphere by a solar eclipse
TL;DR: In a solar eclipse, the moon shields a limited region of the earth's atmosphere from the heating effect of the solar radiation as discussed by the authors, causing the neutral gas to emit internal gravity waves that form a bow wave about the shadow region.
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Identification of high‐latitude acoustic gravity wave sources using the Goose Bay HF Radar
TL;DR: In this paper, the authors examined the radar data for the period of November and December 1991, and days that showed evidence of traveling ionospheric disturbances (TIDs) were selected for analysis.
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Direct measurements of nighttime thermospheric winds and temperatures, 2. Geomagnetic storms
G. Hernandez,R. G. Roble +1 more
TL;DR: In this paper, a high-resolution Fabry-Perot spectrometer has been used at Fritz Peak Observatory, Colorado (39.9°N, 105.5°W), to determine the nighttime thermospheric temperatures and winds during geomagnetic storm periods from the line profiles and Doppler shifts of the (O I) 15867-K (6300 A) line emission.
References
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Journal ArticleDOI
Internal atmospheric gravity waves at ionospheric heights
TL;DR: In this paper, the proper interpretation of irregular motions in the upper atmosphere has been investigated by a variety of techniques, but their proper interpretation has yet to be established. But their proper meaning has not yet been established.
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A model of the auroral electrojets
TL;DR: In this paper, a model of an arc is presented in which the height variation of the auroral ionization is taken into account and vertical currents are allowed to flow in the arc, and the electric field or wind velocity field required to drive the currents is computed for two different cases: in one, the current flow between the ionosphere and the outer magnetosphere is assumed to be limited and electric fields occur along the magnetic field lines in the magnetosphere; in the other, the conductivity along the field lines is assumed that are perfect.
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Ionospheric irregularities produced by internal atmospheric gravity waves
TL;DR: In this article, a perturbation treatment is used to determine the nature and magnitude of the effects of internal atmospheric gravity waves on the ambient rates of production, chemical loss, and motion of the ionization.
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HF Doppler studies of traveling ionospheric disturbances
TL;DR: In this article, a network of CW Doppler sounders was used to detect ionospheric motions observed with a network-of-CW Dopplers. The motions of each type are attributed to various kinds of atmospheric waves that interact with the ionosphere.
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Propagation of acoustic-gravity waves in the atmosphere
Frank Press,David G. Harkrider +1 more
TL;DR: In this paper, the authors used homogeneous wave guide theory to derive dispersion curves, vertical pressure distributions, and synthetic barograms for atmospheric waves, and found that the major features on barograms are due to dispersion; superposition of several modes is needed to explain observed features.