摘要
2000年7月空间大事件对地磁场产生了巨大影响,7月15日至18日发生大磁暴(K=9).磁暴为急始型,在我国地区初相期变幅有200-300 nT,主相最大幅度有500-600nT,为多年来所罕见.在行星际磁场Bz由北向转向南向时,磁暴主相开始;南向分量达到最大值后大约2 h,地磁H分量达到最小值,恢复相开始.并且,这次磁暴与太阳风也存在一定的对应关系.
The geomagnetic field responds to the July 2000 space event much. A great storm (magnetic index K = 9) occurred from July 15 to July 18. There is a sudden commencement with amplitudes about 200-300 nT in China region. The maximum amplitudes during the main phase in China region are about 500-600 nT. That is infrequent for a few years. The Bz component of IMF is turning to southward when the main phase of the storm begins, and after the southward component {Bz < 0) decrease to the minimum, two hours later the storm recovery phase begins. The paper shows that there are some relationship between the solar wind and the storm.
出处
《空间科学学报》
CAS
CSCD
北大核心
2004年第1期22-27,共6页
Chinese Journal of Space Science
基金
国家自然科学基金项目(40374056)
国家杰出青年基金项目(49925412)共同资助
