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The 4-emission-core structure of dayside aurora oval observed by all-sky imager at 557.7nm in Ny-Ă…lesund, Svalbard
- Source :
-
Journal of Atmospheric & Solar-Terrestrial Physics . May2010, Vol. 72 Issue 7/8, p638-642. 5p. - Publication Year :
- 2010
-
Abstract
- Abstract: A survey of dayside aurora excitation at 557.7nm, which was acquired from an all-sky imager at Yellow River Station in Ny-Ålesund, Svalbard, shows that there are 4 intense emission maxima in the dayside oval, centered near 0630/76, 0830/76, 1400/75, and 1600/75 (unit: MLT/MLAT), respectively. Tracing the magnetospheric sources of these cores along geomagnetic field lines, the 0830- and 1400-MLT cores correspond with the prenoon and postnoon magnetospheric boundary layers (MBLs), and the 0630- and 1600-MLT cores are located at the dusk and dawn MBLs, respectively. The potential solar wind-magnetosphere dynamic processes resulting in these auroral features are discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 13646826
- Volume :
- 72
- Issue :
- 7/8
- Database :
- Academic Search Index
- Journal :
- Journal of Atmospheric & Solar-Terrestrial Physics
- Publication Type :
- Academic Journal
- Accession number :
- 49826631
- Full Text :
- https://doi.org/10.1016/j.jastp.2010.03.005