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地球磁层亚暴统计分析

李世友 谢蓉 肖扬

李世友, 谢蓉, 肖扬. 地球磁层亚暴统计分析[J]. 空间科学学报, 2020, 40(6): 1000-1006. doi: 10.11728/cjss2020.06.1000
引用本文: 李世友, 谢蓉, 肖扬. 地球磁层亚暴统计分析[J]. 空间科学学报, 2020, 40(6): 1000-1006. doi: 10.11728/cjss2020.06.1000
LI Shiyou, XIE Rong, XIAO Yang. Statistical Study on the Geomagnetic Substorm[J]. Journal of Space Science, 2020, 40(6): 1000-1006. doi: 10.11728/cjss2020.06.1000
Citation: LI Shiyou, XIE Rong, XIAO Yang. Statistical Study on the Geomagnetic Substorm[J]. Journal of Space Science, 2020, 40(6): 1000-1006. doi: 10.11728/cjss2020.06.1000

地球磁层亚暴统计分析

doi: 10.11728/cjss2020.06.1000
基金项目: 

湖南省教育厅优秀青年项目(18B572),湖南省自然科学基金面上项目(2020JJ4451)和国家自然科学基金青年基金项目(41304132)共同资助

详细信息
    作者简介:

    李世友,E-mail:toneylab@163.com

  • 中图分类号: P353

Statistical Study on the Geomagnetic Substorm

  • 摘要: 利用AL和AE指数对第24个太阳活动周发生的亚暴事件进行统计分析.主要统计了关于磁层亚暴的强度,亚暴初值与恢复值的关系,亚暴持续时间,亚暴恢复相与增长相(包括膨胀相)持续时间的关系等.统计结果表明:在第24个太阳活动周中2008-2016年发生的亚暴事件大部分比较剧烈,其峰值大都在200~1200nT;初值和恢复值大都在30~100nT,并且事件占比符合正态分布;大部分亚暴都能恢复到亚暴初值60nT以内,并且差值越小,事件的占比越大.大部分亚暴的持续时间较长,在100~400min之间,其中增长相(包括膨胀相)持续时间均在120min以内,并且持续时间越长,其事件占比越小;大部分亚暴事件的恢复相持续时间在60~300min之间,并且呈现出正态分布特征.绝大多数亚暴事件的恢复相持续时间为增长相持续时间的10倍以下,其中约一半亚暴事件的恢复相持续时间为增长相持续时间的1~4倍.这说明亚暴的能量聚集速度约为能量释放速度的1~4倍.

     

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出版历程
  • 收稿日期:  2019-07-22
  • 修回日期:  2020-08-19
  • 刊出日期:  2020-11-15

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