An auroral torch structure as an activity center of pulsating auroras
An auroral torch structure as an activity center of pulsating auroras
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作为脉动极光活动中心的极光火炬结构
DOI：
10.1139/p81-139
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发表时间：
1981
影响因子：
1.2
通讯作者：
T. Watanabe
中科院分区：
文献类型：
--
作者：
T. Oguti;S. Kokubun;K. Hayashi;K. Tsuruda;S. Machida;T. Kitamura;O. Saka;T. Watanabe
对公园站点上空 Kp = 6- 期间以及 La Ronge 上空 Kp = 3- 和 Kp = 20 期间发生的三个例子检查了脉动极光的结构。研究发现，尽管整个系统从不活跃时期的带状结构变形为磁活跃时期的火炬结构，但脉动极光的基本结构仍然没有改变；例如，脉动-非脉动边界的存在以及脉动模式相对于地磁纬度的具体分布。研究还表明，极光火炬结构的中心区域是磁活跃时期脉动极光的活动中心。
Structures of pulsating auroras were examined on three examples that occurred during a period with Kp = 6- over Park Site, and during periods with Kp = 3- and Kp = 20, over La Ronge. It was found that the fundamental structure of the pulsating aurora remains unaltered in spite of the deformation of the whole system from zonal structures during less active periods into torch structures during the magnetically active period; for example, the existence of pulsating–nonpulsating boundary and the specific distribution of pulsation modes with respect to geomagnetic latitude. It was also shown that the central regions of auroral torch structures are so called activity centers of pulsating auroras during magnetically active periods.