Solar cycle distribution of great geomagnetic storms

被引:0
作者
Guiming Le
Ziyu Cai
Huaning Wang
Yuting Zhu
机构
[1] Chinese Academy of Sciences,National Astronomical Observatories
[2] Chinese Academy of Sciences,Sate Key Laboratory of Space Weather
[3] Nanjing University,Key Laboratory of Modern Astronomy and Astrophysics, Ministry of Education
[4] China Meteorological Administration,Nation Center for Space Weather
[5] The Second High School Attached to Beijing Normal University,undefined
来源
Astrophysics and Space Science | 2012年 / 339卷
关键词
Solar activity; Great geomagnetic storms; Sun-earth connection;
D O I
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中图分类号
学科分类号
摘要
The distribution properties of great geomagnetic storms (Dst≤−200 nT) and super geomagnetic storms (Dst≤−300 nT) across the solar cycles (19–23) are investigated. The results show that 73.2% of the great geomagnetic storms took place in the descending phase of the solar cycles. 72.7% of super geomagnetic storms occurred in the descending phase of the solar cycles. About 83% of the great geomagnetic storms appeared during the period from the two years before solar cycle peak and the three years after solar cycle peak time. 90.9% of the super geomagnetic storms appeared between the two years before solar cycle peak and the three years after solar cycle peak. When a solar cycle is very strong, the phenomenon that great geomagnetic storms concentrated during the period from the two years before the solar cycle peak time to the three years after the solar cycle peak time is very prominent. The launch time of space science satellite is suggested according to the distribution properties of great geomagnetic storms and super geomagnetic storms in solar cycles.
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页码:151 / 156
页数:5
相关论文
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