On the triggering of auroral substorms by northward turnings of the interplanetary magnetic field
On the triggering of auroral substorms by northward turnings of the interplanetary magnetic field
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DOI：
10.5194/angeo-27-3559-2009
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发表时间：
2009-09
影响因子：
1.9
通讯作者：
J. Wild;E. Woodfield;S. Morley
中科院分区：
文献类型：
--
作者：
J. Wild;E. Woodfield;S. Morley
抽象的。过去十年的一些研究表明，导致亚暴扩展阶段开始的不稳定性可能需要外部触发，例如行星际磁场（IMF）的北转。统计调查导致对拟议的太阳风触发因素与地磁数据确定的亚暴爆发之间的关系产生了对比的解释。因此，我们利用 Cluster 和 IMAGE 卫星任务的数据，介绍了 2001 年至 2005 年间可能触发 260 次亚暴的研究结果。我们发现只有一小部分（
Abstract. Some studies over the last decade have indicated that the instability responsible for substorm expansion phase onset may require an external trigger such as a northward turning of the interplanetary magnetic field (IMF). Statistical investigations have lead to contrasting interpretations regarding the relationship between proposed solar wind triggers and substorm onsets identified from geomagnetic data. We therefore present the results of a study into the possible triggering of 260 substorms between 2001–2005, exploiting data from the Cluster and IMAGE satellite missions. We find that only a small fraction (