极地研究

极地研究 ›› 2011, Vol. 23 ›› Issue (4): 264-268.DOI: 10.3724/SP.J.1084.2011.00264

• 研究论文 • 上一篇    下一篇

南极中山站极光亚暴期间的I(557.7nm)/I(427.8nm)比值变化分析

胡国元,艾勇,张虹   

  1. 武汉大学电子信息学院
  • 收稿日期:2011-04-06 修回日期:2011-07-02 出版日期:2011-12-30 发布日期:2011-12-30
  • 通讯作者: 胡国元
  • 基金资助:

    极地科学战略研究基金

ANALYSIS THE I (557.7 NM)/I (427.8 NM) EMISSION RATE RATIO IN AURORAL SUBSTORM OBSERVED AT ANTARCTIC ZHONGSHAN STATION

Hu Guoyuan，Ai Yong，Zhang Hong   

  1. School of Electronics and Information，Wuhan University
  • Received:2011-04-06 Revised:2011-07-02 Online:2011-12-30 Published:2011-12-30

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摘要：

对1999年4月8日南极中山站极光亚暴期间不同谱线的极光强度比值进行讨论，并据此讨论了亚暴期间沉降粒子能量随时间变化的情况。得出I(557.7nm)/I(427.8nm)和I(630.0nm)/I(427.8nm)比值在平静时期分别在5-22和1-2.76之间变化，该变化不是由原子氧浓度空间分布变化所引起，而可能是由沉降粒子的能量变化和一些其它机制所引起；极光亚暴期间，强度比值急剧减小，分别在1.66-6.5和0.071-1之间变化，该变化主要是由于沉降电子能量的增加引起的；在极光亚暴的初始阶段，上述强度比值达到最小，说明初始阶段的沉降电子能量最高，随着极光亚暴的结束，沉降电子的能量也逐渐恢复到亚暴前的水平。

关键词: 极光亚暴, 强度比值, 沉降粒子

Abstract:

Auroral intensity ratios of different auroral lines happened in auroral substorm at Antarctic Zhongshan Station on April 8, 1999 was discussed together with the variety of penetrated electron energy. On this basis, it is concluded that the ratio range of I(557.7nm)/I(427.8nm) during quiet period varied from 5 to 22, as well as the range of I(630.0nm)/I(427.8 nm) from 1 to 2.76, and the cause of the change was not the atomic oxygen concentration variety, but maybe the penetrated electron energy variety or other mechanisms; the ratios decreased sharply during the auroral substorm, varied from 1.66 to 6.5 and 0.071 to 1 respectively, which mainly caused by the increase of penetrated electron energy. At the beginning of the auroral substorm, the ratio reached its minimum; means that the penetrated electron energy got its maximum, while auroral substorm wear off, the penetrated electron energy come back to the level of pre-substorm.

Key words: auroral substorm, intensity ratio, electron

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