Similarity between global auroral deformations in DAPP photographs and small scale deformations observed by a TV camera

Details Similarity between global auroral deformations in DAPP photographs and small scale deformations observed by a TV camera Similarity between global auroral deformations in DAPP photographs and small scale deformations observed by a TV camera

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37.1413o&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 37, Nov. 1975, p. 1413-1418.

Physics

Auroral Arcs, Electron Clouds, Satellite-Borne Photography, Surges, Television Cameras, Electron Plasma, Magnetic Effects, Magnetic Fields, Plasma Sheaths, Splitting

Scientific paper

A striking resemblance has been found between the global patterns of S-shaped structures in the dusk sector seen in DAPP photographs (westward travelling surge and auroral bulge) and small-scale S-patterns observed by a highly sensitive TV camera. A remarkable similarity has also been found between flame-like structures of small-scale aurora and those of global scale. Another important point is a rotational symmetry between the formation of an S-structure and the formation of a flame structure. The similarity between the deformation processes of large-scale aurora and those of small-scale aurora together with the rotational symmetry between the formation processes of an S-structure and those of a flame structure indicate that auroral deformation is attributable to the general dynamics of an electron sheet or a cloud of electrons in a magnetic field, regardless of the specific configuration and condition of the magnetic field or the plasma distribution around the earth.

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