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近地微电离大气中阿尔芬波的截止

刘明伟 张禹涛 李艳华

刘明伟, 张禹涛, 李艳华. 近地微电离大气中阿尔芬波的截止[J]. 空间科学学报, 2017, 37(4): 442-447. doi: 10.11728/cjss2017.04.442
引用本文: 刘明伟, 张禹涛, 李艳华. 近地微电离大气中阿尔芬波的截止[J]. 空间科学学报, 2017, 37(4): 442-447. doi: 10.11728/cjss2017.04.442
LIU Mingwei, ZHANG Yutao, LI Yanhua. Cut-off of Alfvén Waves in Weakly Ionized Near-Earth Atmosphere[J]. Journal of Space Science, 2017, 37(4): 442-447. doi: 10.11728/cjss2017.04.442
Citation: LIU Mingwei, ZHANG Yutao, LI Yanhua. Cut-off of Alfvén Waves in Weakly Ionized Near-Earth Atmosphere[J]. Journal of Space Science, 2017, 37(4): 442-447. doi: 10.11728/cjss2017.04.442

近地微电离大气中阿尔芬波的截止

doi: 10.11728/cjss2017.04.442
基金项目: 

国家自然科学基金项目资助(11104068)

详细信息
    作者简介:

    刘明伟,E-mail:mwliu@siom.ac.cn

  • 中图分类号: P352

Cut-off of Alfvén Waves in Weakly Ionized Near-Earth Atmosphere

  • 摘要: 利用全电流双流体模型分析了地面磁扰动信号在近地层大气中的传播.结果表明磁扰动信号的传播模式受中性粒子elax-elax离子碰撞频率、磁扰动频率、磁粘滞系数以及大气离化系数等参数的影响.中性粒子碰撞效应导致近地层大气中不存在阿尔芬波传播通道.当磁扰动频率远小于0.001Hz时,磁扰动传播存在趋肤效应,且在近地大气中从高往下逐渐增强;当磁扰动频率远大于0.001Hz时,磁扰动以类似于真空电磁波的模式在近地大气中传播.

     

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出版历程
  • 收稿日期:  2016-06-29
  • 修回日期:  2017-02-27
  • 刊出日期:  2017-07-15

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