极地研究

极地研究 ›› 1995, Vol. 7 ›› Issue (4): 74-82.

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对流电场产生电离层扰动的典型事例

沈长寿;资民筠   

  • 出版日期:1995-12-30 发布日期:1995-12-30

A TIPYCAL SAMPLE OF IONOSPHERIC DISTURBANCE CAUSED BY MAGNETOSPHERIC CONVECTION

  • Online:1995-12-30 Published:1995-12-30

PDF (PC)

1424

被引次数

3

摘要：

用欧空局ＥＩＳＣＡＴ极光区非相干散射雷达观测资料、南极中山站电离层垂测站和我国１２０°Ｅ电离层站链ｆ０Ｆ２资料，分析了１９９１年５月２～３日一次主要由磁层对流引起的电离层扰动过程。从形态特征上看，它与热层中性大气参与的动力耦合过程明显地不同。对照比较表明，这是一次典型的磁层－电离层电动耦合事例。全球地磁站网资料从另一侧面证实，本文讨论的耦合机制是正确的。

关键词: 磁层－电离层耦合,对流电场,电离层扰动

Abstract:

Using data of EISCAT,f 0F2 from ionosondes of Zhongshan Station in Antarctica and station chain in China,the ionospheric disturbance on May 2-3,1991 is analyzed.The features representing processes of electrodynamic and dynamic couplings during a magnetic storm are compared carefully.It shows that in this sample the disturbance is mainly caused by magnetospheric convection.Analysis of geomagnetic data from stations around the world indicates,viewing from another angle,that the coupling mechanism discussed here is reasonable.