极地研究

极地研究 ›› 1994, Vol. 5 ›› Issue (2-English): 53-57.

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Analysis of the ionospheric anomaly at Great Wall Station, Antarctica

 Zhen Weimin, Cao Chong and Wu Jian   

  1. China Research Institute of Radiowave Propagation, Xinxiang 453003, China
  • 出版日期:1944-06-30 发布日期:1944-06-30
  • 通讯作者: Zhen Weimin
  • 基金资助:

    This project is supported by National Natural Science Foundation and State Antarctic Committee of China.

Analysis of the ionospheric anomaly at Great Wall Station, Antarctica

 Zhen Weimin, Cao Chong and Wu Jian   

  1. China Research Institute of Radiowave Propagation, Xinxiang 453003, China
  • Online:1944-06-30 Published:1944-06-30
  • Contact: Zhen Weimin
  • Supported by:

    This project is supported by National Natural Science Foundation and State Antarctic Committee of China.

PDF (PC)

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摘要：

In this paper, we use an empirical method to derive the height of maximum electron concentration of the F2 region and the effective meridional neutral wind at Great Wall Station, Antarctica. The meridional wind is also calculated with the HWM90 model. Results can be used to explain two anomaly features of ionosphere at Great Wall Station. In summer, peak values of f0F2 appear during nighttime. In winter, especially during June and July, f0F2 decrease dramatically as compared with summer's one. Summer anomaly can be explained by combining effects of two causes: thermospheric winds and solar radiation. An important reason for the anomaly is the location of Great Wall Station, which is in both high geographic latitude and middle geomagnetic latitude.

关键词: neureal wind, critical frequency, summer anomaly

Abstract:

In this paper, we use an empirical method to derive the height of maximum electron concentration of the F2 region and the effective meridional neutral wind at Great Wall Station, Antarctica. The meridional wind is also calculated with the HWM90 model. Results can be used to explain two anomaly features of ionosphere at Great Wall Station. In summer, peak values of f0F2 appear during nighttime. In winter, especially during June and July, f0F2 decrease dramatically as compared with summer's one. Summer anomaly can be explained by combining effects of two causes: thermospheric winds and solar radiation. An important reason for the anomaly is the location of Great Wall Station, which is in both high geographic latitude and middle geomagnetic latitude.

Key words: neureal wind, critical frequency, summer anomaly