极地研究

极地研究 ›› 2012, Vol. 24 ›› Issue (2): 129-135.DOI: 10.3724/SP.J.1084.2012.00129

• 研究论文 • 上一篇    下一篇

南极地区Es特性研究

赵海生1,2,许正文1,吴健1   

  1. 1. 中国电波传播研究所，电播环境特性及模化技术重点实验室
    2. 中国科学院空间天气学国家重点实验室
  • 收稿日期:2011-09-16 修回日期:2012-02-13 出版日期:2012-06-30 发布日期:2012-06-30
  • 通讯作者: 赵海生

Sporadic E morphology in Antarctica

Zhao Haisheng1,2，Xu Zhengwen1，Wu Jian1   

  1. 1 National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation
    2 State Key Laboratory of Space Weather, Chinese Academy of Sciences
  • Received:2011-09-16 Revised:2012-02-13 Online:2012-06-30 Published:2012-06-30

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摘要： Es是发生在电离层E层高度上的偶发电离增强结构，其电子密度最高可达E层背景电子密度的100倍以上。Es出现概率和强度全球分布不均，主要分布在中低纬度地区，极区也有较强Es出现并具有显著特点，极区Es的研究，对研究Es成因和物理机理具有重要科学意义。本文利用Syowa站（69.0°S，39.6°E）40余年的观测数据，选取临界频率和虚高两个参数，研究了南极地区Es强度特性、日变化、季节变化及长期变化特性。

关键词: Es, 形态特性, 南极地区

Abstract: Es (Sporadic E) layers are ionization enhancements in the E region of ionospheres, whose electron density can achieve one hundred times of background E in some times. Es layers intensity and appearance probability are anomalous on the earth, which mostly distribute in the midlatitude and lowlatitude. In the polar region, the Es layers are also strong and have unique characteristics. The study of polar region Es is very important for researching the physical mechanism of Es. This paper using the observation data of station Syowa (69.0°S, 39.6°E) in Japan, which is more than 40 years, has studied the intensity characteristics, the day changes, the season changes and the longtime changes of the Es in Antarctica using h’Es and foes.

Key words: Sporadic E layers, morphology characteristics, Antarctica