论文部分内容阅读
研究了分别发生在2003年10月28日和2003年11月18日的两次相似的强烈日冕物质抛射(CME)事件.通过比较这两次CME事件以及它们的行星际响应,分析了其伴随的两种主要空间天气效应:太阳高能粒子事件和地磁暴.这两次CME事件均伴随有一个强耀斑和一次暗条爆发,并且之前都有一个较弱的CME从同一源区产生.第一个CME事件引起了一次极大的太阳高能粒子事件,而第二个则没有引起明显的太阳高能粒子事件.这两次CME事件均引起了大的地磁暴,且第二个CME所引起的地磁暴比第一个CME所引起的地磁暴更强.通过比较分析这两次CME事件,以及与之相关的活动现象和对应的行星际磁云(MC),讨论了这两次CME引起不同空间天气效应的原因:形成不同强度的太阳高能粒子事件在于CME爆发过程中的能量释放率在这两次事件中显著不同,而地磁暴强度的差异则是由行星际MC轴的方向以及MC经过地球时的相对位置不同造成的.
Two similar intense coronal mass ejection (CME) events were studied that occurred on October 28, 2003, and November 18, 2003, respectively. By comparing these two CME events and their interplanetary responses, their concomitant Of the two main space weather effects: solar high-energy particle events and geomagnetic storms. Both CME events were accompanied by a strong flare and a dark burst, and a weak CME was previously produced from the same source region. The CME events caused a very large solar-energy particle event, while the second did not cause any obvious solar-energy particle events, both of which caused large geomagnetic storms and caused by the second CME The geomagnetic storm caused by the first CME is stronger than that of the first CME. By comparing and analyzing these two CME events and the related activity phenomena and corresponding interplanetary magnetic clouds (MC), we discuss that these two CMEs cause different space The cause of the weather effect: The formation of solar high-energy particles with different intensities is due to the fact that the energy release rate during the CME explosion is significantly different between the two events. The difference in geomagnetic storm intensities is caused by the direction of the interplanetary MC axis and the MC passing The relative position of the earth caused by different.