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TEC anomalies—Local TEC changes prior to earthquakes or TEC response to solar and geomagnetic activity changes?

Earth, Planets and Space volume 60, pages961–966(2008)Cite this article

Abstract

A number of papers have reported on deviations of daily values of the maximum electron concentration of the ionospheric F2 layer and/or total electron content (TEC) in the vicinity of an earthquake’s epicenter some time prior to the quake. Owing to the importance of this problem, a question of a “locality” of those effects is emerging. To study this issue we have developed a method based on the calculation of global electron content and of local electron content in “check-region” with low seismic activity. The effect of TEC day-to-day changes before strong earthquakes is analyzed in this work. It is shown that in some cases this effect might be a reflection of global changes of the ionization caused by the 27-day variations as well as other fast alterations due to solar and geomagnetic activity changes. We discuss the problem of certain data corrections that permit local changes to be distinguished from global ones.

References

  1. Afraimovich, E. L., E. I. Astafieva, M. B. Gokhberg, V. M. Lapshin, V. E. Permyakova, G. M. Steblov, and S. L. Shalimov, Variations of the total electron content in the ionosphere from GPS data recorded during the Hector Mine earthquake of October 16, 1999, California, Russian J. Earth Sci., 6(5), 339–354, 2004.

    Article  Google Scholar 

  2. Afraimovich, E. L., E. I. Astafyeva, and I. V. Zhivetiev, Solar activity and global electron content, Doklady Earth Sci., 409A(6), 921–924, 2006.

    Article  Google Scholar 

  3. Afraimovich, E. L., E. I. Astafyeva, A. V. Oinats, Yu. V. Yasukevich, and I. V. Zhivetiev, Global Electron Content: a new conception to track solar activity, Ann. Geophys., 26, 335–344, 2008.

    Article  Google Scholar 

  4. Astafyeva, E. I., E. L. Afraimovich, A. V. Oinats, Yu. V. Yasukevich, and I. V. Zhivetiev, Dynamics of global electron content in 1998–2005 derived from global GPS data and IRI modeling, Adv. Space Res., http://dx.doi.org/10.1016/j.asr.2007.11.007, 2007.

    Google Scholar 

  5. Dautermann, T., E. Calais, J. Haase, and J. Garrison, Investigation of ionospheric electron content variations before earthquakes in southern California, 2003–2004, J. Geophys. Res., 112, B02106, doi:10. 1029/2006JB004447, 2007.

  6. Liu, J. Y., Y. I. Chen, Y. J. Chuo, and H. F. Tsai, Variations of ionospheric total electron content during the Chi-Chi earthquake, Geophys. Res. Lett., 28(7), 1383–1386, 2001.

    Article  Google Scholar 

  7. Liu, J. Y., Y. J. Chuo, S. J. Shan, Y. B. Tsai, Y. I. Chen, S. A. Pulinets, and S. B. Yu, Pre-earthquake ionospheric anomalies registered by continuous GPS TEC measurements, Ann. Geophys., 22, 1585–1593, 2004.

    Article  Google Scholar 

  8. Liu, J. Y., Y. I. Chen, Y. J. Chuo, and C. S. Chen, A statistical investigation of preearthquake ionospheric anomaly, J. Geophys. Res., 111, A05304, doi:10.1029/2005JA011333, 2006.

  9. Mannucci, A. J., B. D. Wilson, D. N. Yuan, C. M. Ho, U. J. Lindqwister, and T. F. Runge, A global mapping technique for GPS-derived ionospheric TEC measurements, Radio Sci., 33(3), 565–582, 1998.

    Article  Google Scholar 

  10. Pulinets, S. A., Seismic activity as a source of the ionospheric variability, Adv. Space Res., 22(6), 903–906, 1998.

    Article  Google Scholar 

  11. Pulinets, S. A., Natural Radioactivity, Earthquakes, and the Ionosphere, EOS, 88(20), 217–218, 2007.

    Article  Google Scholar 

  12. Pulinets, S. A. and K. Boyarchuk, Ionospheric Precursors of Earthquakes, 315 pp., Springer, Berlin, Germany, 2004.

    Google Scholar 

  13. Pulinets, S. A., A. D. Legen’ka, T. V. Gaivoronskaya, and V. Kh. Depuev, Main phenomenological features of ionospheric precursors of strong earthquakes, J. Atmos. Sol. Terr. Phys., 65, 1337–1347, 2003.

    Article  Google Scholar 

  14. Pulinets, S. A., T. B. Gaivoronska, and L. Ciraolo, Correlation analysis technique revealing ionospheric precursors of earthquakes, Nat. Hazards, 4, 697–702, 2004.

    Article  Google Scholar 

  15. Pulinets, S. A., A. N. Kotsarenko, L. Ciraolo, and I. A. Pulinets, Special case of ionospheric day-to-day variability associated with earthquake preparation, Adv. Space Res., 39, 970–977, 2007.

    Article  Google Scholar 

  16. Rishbeth, H., F-region links with the lower atmosphere?, J. Atmos. Sol. Terr. Phys., 68, 469–478, 2006a.

    Article  Google Scholar 

  17. Rishbeth, H., Ionoquakes: Earthquake Precursors in the Ionosphere?, EOS, 87(32), 316–317, 2006b.

    Article  Google Scholar 

  18. Zakharenkova, I. E., I. I. Shagimuratov, A. Krankowski, and A. F. Lagovsky, Precursory phenomena observed in the total electron content measurements before great Hokkaido earthquake of September 25, 2003 (M=8.3), Studia Geophys. Geod., 51(2), 267–278, 2007.

    Article  Google Scholar 

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Affiliations

  1. Institute of Solar-Terrestrial Physics SB RAS, PO Box 291, 664033, Irkutsk, Russian Federation

    Edward L. Afraimovich & Elvira I. Astafyeva

  2. Dept. of Natural History Sciences, Hokkaido University, Kita-ku, N10 W8, Sapporo, 060-0810, Japan

    Elvira I. Astafyeva

Authors
  1. Edward L. Afraimovich
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  2. Elvira I. Astafyeva
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Correspondence to Elvira I. Astafyeva.

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Afraimovich, E.L., Astafyeva, E.I. TEC anomalies—Local TEC changes prior to earthquakes or TEC response to solar and geomagnetic activity changes?. Earth Planet Sp 60, 961–966 (2008). https://doi.org/10.1186/BF03352851

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Key words

  • Ionosphere
  • total electron content
  • global electron content
  • seismo-ionospheric phenomena
  • earthquakes precursors
  • solar activity