中文核心期刊
CNKI期刊全文数据库
中国科学引文数据库(CSCD)源期刊
中国科技论文统计源期刊
万方数据知识服务平台
英国《科学文摘》(SA)
美国化学文摘(CA)
俄罗斯《文摘杂志》(AJ)
德国《天文学与天体物理学文摘》(AAA)
英国《中国天文学和天体物理学》(SCI收录)全文摘译期刊之一
《中国学术期刊文摘》
《中国物理文摘》
《中国天文学文摘》

Chinese Journal of Space Science ›› 2020, Vol. 40 ›› Issue (6): 1000-1006.doi: 10.11728/cjss2020.06.1000

• Research Articles • Previous Articles    

Statistical Study on the Geomagnetic Substorm

LI Shiyou, XIE Rong, XIAO Yang   

  1. School of Electronic Science and Engineering, Hunan University of Information Technology, Changsha 410151
  • Received:2019-07-22 Revised:2020-08-19 Published:2020-12-09

Abstract: The substorm is a process that releases enormous energy in the magnetosphere, including auroral, ionospheric, magnetospheric and thermospheric substorms. The substorm can result in severe disturbances in the whole magnetosphere and ionosphere. In this work, the AL and AE indices are employed to analyze the substorm events in the 24th solar cycle. Statistical analysis is performed on the relationship between the intensity of substorm, the initial value of substorm and the recovery value, the duration of a substorm, the relationship between substorm recovery phase and the duration of the growth phase (including expansion phase) and so on. The statistical results show that: most of the substorm events occurred in the 24th solar activity cycle from 2008 to 2016 are severe, with the peak value of the substorm mostly around 200~1200nT; the duration of most of the substorms ranges from 100 to 400min, the duration of the recovery phase of most of the substorms is between 60 to 300min, and presents the normal distribution characteristics; the recovery phase duration of most substorm events is less than 10 times of the growth phase duration. The statistical results on the substorm are helpful for further understanding of the occurrence and development of substorm in the magnetosphere. Therefore, it is of practical significance to further understand the energy evolution process in the magnetosphere.

Key words: Substorm intensity, Substorm onset, Substorm duration, Solar activity circle

CLC Number: