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利用TIE-GCM模式计算电离层电流及夜间电离层磁场

刘学旺 李磊 张艺腾 薛洪波

刘学旺, 李磊, 张艺腾, 薛洪波. 利用TIE-GCM模式计算电离层电流及夜间电离层磁场[J]. 空间科学学报, 2018, 38(1): 29-36. doi: 10.11728/cjss2018.01.029
引用本文: 刘学旺, 李磊, 张艺腾, 薛洪波. 利用TIE-GCM模式计算电离层电流及夜间电离层磁场[J]. 空间科学学报, 2018, 38(1): 29-36. doi: 10.11728/cjss2018.01.029
LIU Xuewang, LI Lei, ZHANG Yiteng, XUE Hongbo. Ionospheric currents and nightside ionospheric magnetic fields calculated by TIE-GCM[J]. Journal of Space Science, 2018, 38(1): 29-36. doi: 10.11728/cjss2018.01.029
Citation: LIU Xuewang, LI Lei, ZHANG Yiteng, XUE Hongbo. Ionospheric currents and nightside ionospheric magnetic fields calculated by TIE-GCM[J]. Journal of Space Science, 2018, 38(1): 29-36. doi: 10.11728/cjss2018.01.029

利用TIE-GCM模式计算电离层电流及夜间电离层磁场

doi: 10.11728/cjss2018.01.029
基金项目: 

国家自然科学基金青年科学基金项目(41404146)和国家重点研发计划项目(2016YFB0501503)共同资助

详细信息
    作者简介:

    刘学旺,E-mail:liuxwrm@163.com

  • 中图分类号: P352

Ionospheric currents and nightside ionospheric magnetic fields calculated by TIE-GCM

  • 摘要: 电离层电流产生的磁场是地磁场卫星测绘时需要剔除的干扰源.利用电离层热层模式TIE-GCM计算电离层中的中性风、重力驱动和压强梯度等形成的电离层电流的全球分布,分析电流在特定位置产生的磁场及磁场三分量随纬度的变化规律.结果表明,E层尤其是磁赤道和极区的电流密度较大,可达103nA·m-2量级,F层电流密度量级约为10nA·m-2.在磁静日(Kp≤ 1)夜间22:00LT-04:00LT,电离层电流在中低纬度(南北纬50°之间)产生的磁场量级为几个nT,且磁场的南北向分量和径向分量基本大于东西向分量.通过与CHAMP卫星磁测数据分析比较,发现TIE-GCM模式计算电离层干扰磁场在中低纬度可以取得较好的结果,但在高纬度地区的效果不理想,还需进一步改进模式以提高计算精度.

     

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出版历程
  • 收稿日期:  2017-02-14
  • 修回日期:  2017-06-11
  • 刊出日期:  2018-01-15

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