Chinese Science Bulletin

, Volume 47, Issue 1, pp 83–85 | Cite as

The correlation of flare’s location on solar disc and the sudden increase of total electron content

  • Donghe Zhang
  • Zuo Xiao
  • Qing Chang
Notes
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Abstract

The correlation of flare’s location on solar disc with the value of sudden increase of total electron content is analyzed with flare’s parameters observed by GOES satellite from 1997 to 1999 and total electron content derived from GPS data observed by international GPS Service for Geodynamics. It is found that, besides the flare’s maximum X-ray flux, flare’s location on solar disc has some relation with the value of SITEC during the flare. The ionospheric response to a flare with a smaller maximum X-ray flux and nearer angular distance to the Sun’s central meridian line may be stronger than that of the flare with a larger maximum X-ray flux and far angular distance. To the flares with the same class of maximum X-ray flux, the nearer the angular distance to the Sun’s meridian, the stronger the ionospheric response.

Keywords

flare SITEC GPS 

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References

  1. 1.
    Thome, G. D., Wagner, L. S., Electron density enhancement in the E and F regions of the ionosphere during solar flares, J. G. R., 1971, 76: 6883.CrossRefGoogle Scholar
  2. 2.
    Mendillo, M., Incoherent scatter observations of the ionosphere respect to a large solar flare, Radio Sci., 1974, 9: 197.CrossRefGoogle Scholar
  3. 3.
    Ma Jianmin, Long Qili, The flare influence on ionospheric total electron content during flare on April 24, 1984, Journal of Space Sci., 1986, 6(4): 184.Google Scholar
  4. 4.
    Zhang Donghe, Xiao Zuo, The study of ionospheric TEC during the flare on Nov. 22, 1998 by means of 4 GPS receivers over China, Acta Scientiarum Naturalium, Universitatis Pekinensis, 2000, 36(3): 414.Google Scholar
  5. 5.
    Zhang Donghe, Xiao Zuo, Study of the ionospheric TEC using GPS during the large solar flare burst on Nov. 6, 1997, Chinese Science Bulletin, 2000, 45(19): 1749.CrossRefGoogle Scholar
  6. 6.
    Matsoukas, D. A., Papagiannis, M. D., Anrons, J. et al., Corelation of solar radio bursts and sudden increases of the total electron content (SITEC) of the ionosphere, J. A. T. P, 1972, 34: 1275.CrossRefGoogle Scholar
  7. 7.
    Mannucci, A. J., Wilson, B. D., Yuan, D. N. et al., A global mapping technique for GPS-derived ionospheric total electron content measurements, Radio Sci., 1998, 33: 565.CrossRefGoogle Scholar
  8. 8.
    Zhang Donghe, Xiao Zuo, The calculating TEC methods by using GPS observations and its applications for ionospheric disturbances, Chinese Journal of Geophysics, 2000, 43(4): 451.Google Scholar

Copyright information

© Science in China Press 2002

Authors and Affiliations

  • Donghe Zhang
    • 1
    • 2
  • Zuo Xiao
    • 1
  • Qing Chang
    • 3
  1. 1.Department of GeophysicsPeking UniversityBeijingChina
  2. 2.Qingdao Research CenterChina Research Insitute of Radio-wave PropagationQingdaoChina
  3. 3.Department of Electronic EngineeringBeijing University of Aeronautics and AstronauticsBeijingChina

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