The 4-emission-core structure of dayside aurora oval observed by all-sky imager at 557.7 nm in Ny-Ålesund, Svalbard
The 4-emission-core structure of dayside aurora oval observed by all-sky imager at 557.7 nm in Ny-Ålesund, Svalbard
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DOI：
10.1016/j.jastp.2010.03.005
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发表时间：
2010-05
影响因子：
1.9
通讯作者：
Zejun Hu;Huigen Yang;Jimin Liang;Desheng Han;D. Huang;Hongqiao Hu;Beichen Zhang;Rui-yuan Liu;Z. Chen
中科院分区：
文献类型：
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作者：
Zejun Hu;Huigen Yang;Jimin Liang;Desheng Han;D. Huang;Hongqiao Hu;Beichen Zhang;Rui-yuan Liu;Z. Chen
从斯瓦尔巴群岛尼奥勒松黄河站的全天空成像仪获取的557.7nm的日面极光激发调查显示，日面椭圆形中有4个强烈的发射极大值，分别集中在0630/76、0830/76、1400/75和1600/75附近（单位：MLT/MLAT）。沿着地磁场线追踪这些核心的磁层源，0830-和1400-MLT核心对应于午前和午后磁层边界层（MBL），0630-和1600-MLT核心分别位于黄昏和黎明MBL。讨论了导致这些极光特征的潜在太阳风-磁层动态过程。
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.