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基于MF-DFA的极低频瞬态事件多重分形分析

姜苏 张其林 黄凯丽 陈媛 苏建峰 秦微

姜苏, 张其林, 黄凯丽, 陈媛, 苏建峰, 秦微. 基于MF-DFA的极低频瞬态事件多重分形分析[J]. 空间科学学报, 2015, 35(3): 324-329. doi: 10.11728/cjss2015.03.324
引用本文: 姜苏, 张其林, 黄凯丽, 陈媛, 苏建峰, 秦微. 基于MF-DFA的极低频瞬态事件多重分形分析[J]. 空间科学学报, 2015, 35(3): 324-329. doi: 10.11728/cjss2015.03.324
JIANG Su, ZHANG Qilin, HUANG Kaili, CHEN Yuan, SU Jianfeng, QIN Wei. Multifractal Analysis of ELF Transient Events Based on MF-DFA[J]. Chinese Journal of Space Science, 2015, 35(3): 324-329. doi: 10.11728/cjss2015.03.324
Citation: JIANG Su, ZHANG Qilin, HUANG Kaili, CHEN Yuan, SU Jianfeng, QIN Wei. Multifractal Analysis of ELF Transient Events Based on MF-DFA[J]. Chinese Journal of Space Science, 2015, 35(3): 324-329. doi: 10.11728/cjss2015.03.324

基于MF-DFA的极低频瞬态事件多重分形分析

doi: 10.11728/cjss2015.03.324 cstr: 32142.14.cjss2015.03.324
基金项目: 国家自然科学基金项目(40975002)和江苏高校优势学科建设工程项目(PAPD)共同资助
详细信息
  • 中图分类号: P467

Multifractal Analysis of ELF Transient Events Based on MF-DFA

  • 摘要: 利用三个测站实测极低频全球闪电活动背景信号南北及东西方向磁场分量资料, 应用多重分形方法对极低频瞬态事件发生时前1s背景信号中的长程关联性及多重分形特征进行了分析. 发现极低频瞬态事件发生时, 最大脉冲前1s背景信号南北及东西方向磁场均具有长程关联性和多重分形特征. 其中南北方向最小标度指数0.15 < amin< 0.22, 分形谱宽度1.09 < Δa < 1.51; 东西方向最小标度指数0.23 < amin< 0.59, 分形谱宽度0.75 < Δa < 0.99. 多重分形谱参数Δaamin可以很好地自动识别Q-burst发生.

     

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出版历程
  • 收稿日期:  2014-07-30
  • 修回日期:  2015-03-24
  • 刊出日期:  2015-05-15

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