Oval intensifications associated with polar arcs
The existence of large scale auroral forms in the high latitude region poleward of the auroral oval has generated much interest in recent years because of the implications these forms have for magnetospheric topology. Often these so called polar cap arcs are observed to be connected to auroral regio...
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Published in | Geophysical research letters Vol. 14; no. 4; pp. 403 - 406 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
Blackwell Publishing Ltd
01.04.1987
American Geophysical Union |
Subjects | |
Online Access | Get full text |
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Summary: | The existence of large scale auroral forms in the high latitude region poleward of the auroral oval has generated much interest in recent years because of the implications these forms have for magnetospheric topology. Often these so called polar cap arcs are observed to be connected to auroral regions which are identified with plasma sheet particle populations. These connection points are sometimes associated with intensifications in the auroral distribution. Observations with the Viking UV Imager show that these intensifications are highly dynamic on time scales of minutes, being sometimes suggestive of substorms. The polar arcs may move in response to the dynamics of the intensification or else remain spatially fixed. |
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Bibliography: | ArticleID:6L6456 istex:594FB949288CE11D47B43D3AA4A7F28EFE840527 ark:/67375/WNG-LKGF9T40-H ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
ISSN: | 0094-8276 1944-8007 |
DOI: | 10.1029/GL014i004p00403 |