摘要
分析了引起2003年10～11月发生的3个特大磁暴的太阳活动、行星际扰动以及中国东部地磁台链记录到的地面磁场变化。结果表明,这3个特别大的磁暴是由太阳质量抛射事件引起的。太阳向着地球喷发出的大量等离子体引起的强烈太阳风扰动和持续长时间的南向行星际磁场与磁层相互作用形成了特别大的磁暴。ACE卫星、GOES卫星以及地面地磁台站较完整地记录了这3次日地扰动传输过程。对于每一个磁暴,中国东部地磁台链记录到的H分量变化形态一致,纬度最高的满洲里地磁台H幅度最大,而其他台站的幅度与纬度无明显关系,这表明磁暴的发展不完全由赤道环电流引起,在这样强烈的磁暴期间,磁层内的电流体系非常复杂。
The solar activity, interplanetary disturbance and ground-based magnetic record during the three 2003 giant storms are investigated in this paper. It was found that all three giant storms were caused by coronal mass emission. The interaction of strong solar wind and long-duration southward interplanetary magnetic field with magnetosphere produces giant storms. The magnetic disturbances were transported from Sun to Earth recorded by ACE satellite, GOES satellite and ground observatories. All H components recorded by different observatories of China eastern array have the same shape. The amplitude is highest in northernmost Manzhouli observatory, but no obvious regulation exists to prove that ranges change with latitudes if taking the H amplitudes recorded by other observatories into consideration. The result indicates that these giant storms are not completely caused by equator ring current, and the responsible current systems are far more complex during such intense storms.
出处
《地震地磁观测与研究》
2006年第2期43-47,共5页
Seismological and Geomagnetic Observation and Research
关键词
大磁暴
太阳活动
行星际
giant storms, solar activity, interplanetary
