Journal ArticleDOI
The ionospheric wind dynamo - I. Lunar tide
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TLDR
In this article, the response of the ionosphere to a horizontal wind-induced e.m.f. is derived and the appropriate boundary conditions are discussed and the equation is solved numerically to obtain the electric current distribution produced by several different models of the lunar semidiurnal tide.About:
This article is published in Planetary and Space Science.The article was published on 1970-07-01. It has received 113 citations till now. The article focuses on the topics: Earth's magnetic field & Dynamo.read more
Citations
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The prereversal enhancement of the zonal electric field in the equatorial ionosphere
TL;DR: In this paper, it was shown that after sunset, the ionospheric conductivity decreases far more rapidly in the E region than in the F region, and that the enhancement of the eastward field for an eastward F region wind turns out to be a simple direct consequence of the fact that the E and F conductivities are different.
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Dependence of equatorial F region vertical drifts on season and solar cycle
TL;DR: In this article, the vertical drift measurements have been made at Jicamarca for more than half a solar cycle and the data from periods of high and low activity are appreciably different.
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Theoretical studies of atmospheric tides
TL;DR: A review of advances in the theory of atmospheric tides since the monograph by Chapman and Lindzen (1970) is comprehensively reviewed in this article, where the effects of mean zonal winds and meridional temperature gradients, molecular viscosity and thermal conductivity, radiative damping, composition variations, and hydromagnetic coupling, including seasonal and solar cycle effects are investigated.
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Sq and EEJ—A review on the daily variation of the geomagnetic field caused by ionospheric dynamo currents
Yosuke Yamazaki,Astrid Maute +1 more
TL;DR: In this article, the authors review advances in understanding of the geomagnetic daily variation and its source ionospheric currents during the past 75 years and provide possible directions for future work.
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On the production mechanism of electric currents and fields in the ionosphere
TL;DR: In this paper, the dynamo theory of Sq variations is reexamined to see if it can be reconciled with recent observations of ionospheric winds and electric fields.
References
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Journal ArticleDOI
The upper atmosphere in motion
TL;DR: In this article, a review of the observational evidence for the upper atmosphere is presented, in groupings determined by the physical processes that are thought to be operative, and corresponding theories are measured against it.
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Electric Currents in the Ionosphere. I. The Conductivity
W. G. Baker,David Forbes Martyn +1 more
TL;DR: In this paper, the authors examined the effect of polarization of the Hall current on the conductivity of a thin ionized sheet oriented at an angle to a uniform magnetic field and found that the effective conductivity over most of the earth is sufficient to satisfy Stewart's dynamo theory.
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Thermally driven diurnal tide in the atmosphere
TL;DR: The theory for the diurnal tide in the atmosphere is reviewed and the appropriate Hough Functions (including those with negative equivalent depths) are described in this article, where the main thermal drives for the durnal tide are described and the theory is then used to compute the atmosphere's response to the thermal drives.
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Horizontal Wind Systems in the Ionospheric E Region Deduced from the Dynamo Theory of the Geomagnetic Sq Variation Part III
TL;DR: In this article, wind systems in summer and winter hemispheres are deduced from the geomagnetic Sq data, and it is shown that the diurnal wind component has greater magnitude in summer than in winter.