Results 131 to 140 of about 1,541 (175)

On the geomagnetic storm effect

Journal of Geophysical Research, 1956
The high electrical conductivity of the region surrounding Earth, inferred from the observations of atmospheric whistlers and the zodiacal light, requires abandoning the customary models for producing a geomagnetic storm field with impressed current system.
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Dynamics of the geomagnetic storm

Space Science Reviews, 1962
This paper is intended as a critical review of current ideas concerning the mechanisms responsible for the geomagnetic storm. The dynamical theory of the geomagnetic storm phenomenon is formulated as a problem in elasticity. The observed variations in the field are the strains produced by particle stresses exerted by gases in interplanetary space, by ...
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Studies on geomagnetic storm in relation to geomagnetic pulsation

Journal of Geophysical Research, 1958
The existence of the earth's outer atmosphere, of which hydromagnetic oscillations forced by the corpuscular stream would give rise to geomagnetic pulsations, suggests the usefulness of studying the geomagnetic storm in relation to the geomagnetic pulsation, and, further, of improving the Chapman-Ferraro theory of the geomagnetic storm.
Y. Kato, T. Watanabe
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Geomagnetic storms and substorms

Reviews of Geophysics, 1975
This report is divided into two main parts corresponding roughly to observations and interpretations. The observation section is subdivided into papers concerned with the solar wind, geomagnetic tail, the magnetosphere, and the ionosphere and atmosphere. These regions are of course interdependent, and the boundaries between them are not sharp. However,
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On the geomagnetic storm effect

Journal of Geophysical Research, 1957
In a recent paper,1 an objection was raised against the “ring-current” hypothesis of geomagnetic storm effects, and an alternative hypothesis based on atmosphere displacements was advanced. The objection arose from the unacceptable delay, estimated at 87 days, required for the passage of the storm through the outer reaches of the earth's atmosphere ...
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Geomagnetic storm theory

Journal of Geophysical Research, 1960
A discussion of the two-gas theory of the transmission of geomagnetic disturbances through the atmosphere (to several earth radii) is extended, with the following results: (i) The central problem concerning the main phase of a geomagnetic storm is the mechanism of penetration of solar ions into the geomagnetic field.
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Is ozone affected by geomagnetic storms?

Advances in Space Research, 1999
Abstract A brief review of effects of strong geomagnetic storms on total ozone content, targeted to effects observed near the latitudinal circle of 50N, shows that at these latitudes geomagnetic-storm related changes in total ozone can at least partly be attributed to storm-related changes in atmospheric circulation.
J. Laštovička, P. Mlch
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Tutorial on geomagnetic storms and substorms

IEEE Transactions on Plasma Science, 2000
Geomagnetic storms have been studied for more than a century and substorms for nearly four decades. The space era which began in the late 1950s has ushered new discoveries and given new practical importance to this scientific discipline as we continue to amass technological assets in space.
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A Hydromagnetic Theory of Geomagnetic Storms

Geophysical Journal International, 1962
Summary The following hydromagnetic theory of geomagnetic storms is outlined: (a) A solar ion stream envelopes the geomagnetic cavity exerting radial pressure and tangential frictional drag. The former creates an O-type hydromagnetic wave, the latter E-type (twist) waves. The frictional effect may also scatter 104 eV electrons into the cavity
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Forecast of recurrent geomagnetic storms

Advances in Space Research, 2011
Abstract Long-term forecast of space weather allows in achieving a longer lead time for taking the necessary precautions against disturbances. Hence, there is a need for long-term forecasting of space weather. We studied the possibility for a long-term forecast of recurrent geomagnetic storms.
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