Coronal mass ejections and space weather due to extreme events
Coronal mass ejections and space weather due to extreme events
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极端事件导致的日冕物质抛射和太空天气
DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
S. Akiyama
中科院分区:
文献类型:
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作者:
N. Gopalswamy;S. Yashiro;S. Akiyama
This paper summarizes the extreme solar activity and its space weather implications during the declining phase of the solar cycle 23: October-November 2003 (AR 486), November 2004 (AR 696), January 2005 (AR 720), and September 2005 (AR 808). We have compiled and compared the properties of eruptions and the underlying active regions. All these are super active regions, but the flare and CME productivity varied significantly. While the CMEs from all the regions kept the level of solar energetic particles (SEPs) at storm level for several days, their geoeffectiveness (the ability to produce geomagnetic storms) was significantly different, probably due to the location of the eruptions on the Sun.