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
S. Akiyama
中科院分区:
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文献类型:
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作者:
N. Gopalswamy;S. Yashiro;S. Akiyama

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本文总结了2003年11月(AR 486)、2004年11月(AR 696)、2005年1月(AR 720)和2005年9月(AR 808)太阳活动周期下降阶段的极端太阳活动及其空间天气影响。我们已经编制和比较了火山爆发和潜在的活动区的属性。这些都是超活动区,但耀斑和CME生产力变化显著。虽然所有地区的日冕物质抛射都将太阳高能粒子(SEP)的水平保持在风暴水平数天,但它们的地球效应(产生地磁暴的能力)却有很大的不同,这可能是由于喷发的位置在太阳上。
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.