Total electron content variations over the earthquakes epicenters

Authors

  • K. E. Nurgaliyeva
  • G. Ya. Khachikjan
  • A. K. Akildilniva

Keywords:

earthquake, ionosphere, the global electric circuit, total electron content

Abstract

In this work the total electron content variations over the strongest earthquakes epicenters for the period 1999-2014 was investigated. In order to provide good accuracy of local total electron content estimation the picenters in the territory with closely replaced GPS receivers was chosen. There were 10 earthquakes with a magnitude of more than 6.5 for listed conditions. For the chosen periods the geophysical conditions was investigated. It was shown that the local total electron content of the ionosphere the day before the earthquake increases for about 0.11-0.23 percents, But for cases of geomagnetic activity periods the electron density decreased for about 0.12 percents.

References

[1] Freund F. Toward a unified solid state theory for preearthquake
signals // Acta Geophys. – 2010. – Vol .58. – P. 719-766
[2] Kuo C.L., Huba J.D., Joyce G., Lee L.C. Ionosphere plasma bubbles and density variations induced by preearthquake rock currents and associated surface charges // J. Geophys. Res. – 2011. – Vol. 116. – P. 10317.
[3] Karpov M.I., Zolotov O.V., Namgaladze A.A. Modeling of the ionosphere response on the earthquake preparation // Proceedings of the MSTU. – 2012. – Vol. 15. – P. 471-476.
[4] Kim V.P., Liu J.Y., Hegai V.V. Modeling the preearthquake electrostatic effect on the F region ionosphere // Advances in Space Research. – 2012. – P. 1524-1533.
[5] http://earthquake.usgs.gov/neic.world.epic
[6] ftp://cddis.gsfc.nasa.gov/pub/gps/products/ionex
[7] http://wdc.kugi.kyoto-u.ac.jp/kp/

Downloads

Published

2015-07-22

Issue

Section

Plasma Physics and Related Technology