Letter | Published:

Terrestrial Control in the Production of Aurora

Naturevolume 207pages969970 (1965) | Download Citation

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Abstract

AMPLE evidence exists for a physical connexion of some kind between certain solar events, typified by a flare, and such related phenomena as disturbances in the Earth's magnetic field and in the ionosphere, and the occurrence of aurora. A variety of model mechanisms has been proposed to describe the links in the chain of connexion. But whether they invoke a stream of particles emanating from the active solar area or an elongated envelope of solar magnetic field anchored on the area for the first stage in the linkage from the Sun, few of the models continue the mechanism in detail nearer the Earth than the outer confines of the magnetosphere. There are defects in any model which tries to continue the particle stream directly down to auroral level in the Earth's atmosphere using the geomagnetic field as guide lines; and to introduce the outer radiation belt as an intermediate stage has incurred the difficulty, at least according to present notions, that the energy which can be stored there is inadequate to sustain great auroral displays.

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References

  1. 1

    British Polar Year Expedition, 1932–33, 1 (Brit. Nat. Comm. for the Polar Year, Boy. Soc., London, 1937).

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  1. 34 King's Road, Richmond, Surrey

    • J. M. STAGG

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DOI

https://doi.org/10.1038/207969a0

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