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
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A theoretical investigation of sources of large and medium scale atmospheric gravity waves in the auroral oval
N. Jing,Robert D. Hunsucker +1 more
TL;DR: In this paper, the authors developed a general theory to describe the behavior of the AGW source terms, and found that the source terms which generate AGWs are closely related to the velocities and frequencies of AGWs, and that the Lorentz force is dominant in generating the vertical velocity perturbation of large scale AGWs.
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Infrasonic waves generated by auroral currents
TL;DR: In this article, the infrasonic wave field generated by a pulsating aurora is calculated under both Joule heating and Lorentz force coupling conditions, and it is found that either may give rise to a field of magnitude detectable with ground-based apparatus placed within several hundred kilometers of the aurora's latitude.
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Relative Contributions of Ion Convection and Particle Precipitation to Exciting Large-Scale Traveling Atmospheric and Ionospheric Disturbances
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Generation of atmospheric gravity waves associated with auroral activity in the polar F region
Shin-ichiro Oyama,Mamoru Ishii,Yasuhiro Murayama,Hiroyuki Shinagawa,Stephan Buchert,Ryoichi Fujii,Wlodek Kofman +6 more
TL;DR: In this paper, the relationship between auroral activities and the generation of neutral-wind oscillations in the polar F region (150-300 km) was investigated using data from the European Incoherent Scatter (EISCAT) radar, the all-sky auroral camera, and the IMAGE (International Monitor for Auroral Geomagnetic Effects) magnetograms.
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Horizontal thermal structure of the mesosphere from observations of OH(8-3) band emissions
TL;DR: Two computerized tilting-filter photometers and a programmable dual axis mirror system have been used to produce maps of mesospheric rotational temperature and intensity at Arecibo.
References
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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.