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第23太阳活动周行星际磁场扇形结构对中低纬地磁场的影响

李仲怡 乐贵明 裴世鑫

李仲怡, 乐贵明, 裴世鑫. 第23太阳活动周行星际磁场扇形结构对中低纬地磁场的影响[J]. 空间科学学报, 2017, 37(1): 19-27. doi: 10.11728/cjss2017.01.019
引用本文: 李仲怡, 乐贵明, 裴世鑫. 第23太阳活动周行星际磁场扇形结构对中低纬地磁场的影响[J]. 空间科学学报, 2017, 37(1): 19-27. doi: 10.11728/cjss2017.01.019
LI Zhongyi, LE Guiming, PEI Shixin. IMF Sector Effect on Geomagnetic Field at MID and Low Latitudes during Solar Cycle 23[J]. Journal of Space Science, 2017, 37(1): 19-27. doi: 10.11728/cjss2017.01.019
Citation: LI Zhongyi, LE Guiming, PEI Shixin. IMF Sector Effect on Geomagnetic Field at MID and Low Latitudes during Solar Cycle 23[J]. Journal of Space Science, 2017, 37(1): 19-27. doi: 10.11728/cjss2017.01.019

第23太阳活动周行星际磁场扇形结构对中低纬地磁场的影响

doi: 10.11728/cjss2017.01.019
基金项目: 

国家自然科学基金项目(41074132,41274193,41474166)和质检公益行业专项(200710123)共同资助

详细信息
    通讯作者:

    李仲怡,E-mail:Lizhongyi_lzy@163.com

    乐贵明,E-mail:Legm@cma.gov.cn

  • 中图分类号: P353

IMF Sector Effect on Geomagnetic Field at MID and Low Latitudes during Solar Cycle 23

  • 摘要: 用特征向量分析法对第23太阳活动周天津静海磁场强度水平分量H的时均值进行研究,分析行星际磁场扇形结构的地磁效应(简称扇形效应)对中低纬地磁场H分量日变化的贡献.研究结果表明,中低纬扇形效应为3~11nT,在太阳活动高年扇形效应达到最大值(约11nT),低年达到最小值(约3nT).太阳活动高年扇形效应引起的地磁H分量值变化与太阳活动低年的情况相反,但是扇形效应在夏季对地磁H分量的影响较小.太阳活动高年扇形效应日均值的增减与上升年的相反,与下降年相同,夏季扇形效应平均增量最小且无规律.春、夏和秋三个季节的扇形效应最大值都出现在太阳活动高年,冬季的扇形效应在太阳活动峰年两年后才出现最大值(约11nT).在太阳活动低年(或高年),当扇形磁场背离(或指向)太阳时,夏季扇形效应白天引起地磁H分量增大(或减小),夜间导致地磁H分量减小(或增大),其他季节全天都会导致地磁H分量减小(或增大).用特征向量推断行星际磁场扇形极性的符合率在春夏秋三个季节高达60%,在冬季为55%.

     

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出版历程
  • 收稿日期:  2015-12-01
  • 修回日期:  2016-07-19
  • 刊出日期:  2017-01-15

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