Chinese Journal of Polar Research

ADVANCES IN POLAR SCIENCE ›› 1999, Vol. 10 ›› Issue (2-English): 89-94.

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Determination of apparent bulk velocity of auroral images

 Xu Wenyao1, Wei Zigang1, Zhang Beichen2, Hu Hongqiao2,3 and Liu Ruiyuan2   

  1. 1 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China;
    2 Polar Research Institute of China, Shanghai 200129, China;
    3 Department of Radio Science and Technology, Wuhan University, Wuhan 430072, China
  • Online:1949-06-30 Published:1949-06-30
  • Contact: Xu Wenyao

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Abstract:

In this paper we use a correlation analysis technique of random pattern to calculation of shift velocity of auroral image. The velocity thus obtained is a kind of apparent "average" velocity of whole image. instead of the velocity of some certain points or parts in the auroral pattern. The technique is used to an example of aurora australis recorded at Zhongshang Station of Antarctica in 1997. The typical velocity of the auroral pattern for the studied cases is about 3 km/s.

Key words: auroral image, all-sky camera, random pattern, correlation analysis