Ionospheric disturbances before the great earthquakes in Haiti (М = 7.2) and Japan (М = 9.0) from data of satellite radionavigation systems

1Khizhniak, VV, 2Dedenok, VP, 2Tkachenko, АO
1Ukrainian Scientific Research Institute of Civil Protection of the Ministry of Emergencies of Ukraine, Kyiv, Ukraine
2I. Kozhedub Kharkiv Air Force University, Kharkiv, Ukraine
Kosm. nauka tehnol. 2012, 18 ;(6):35–42
Publication Language: Russian
Using estimates for ionospheric delays of radio navigation signals from a network of IGS stations, we analysed ionospheric variations over the epicenters of two great earthquakes: in Haiti in January 2010 (М = 7.2) and in Japan in March 2011 (М = = 9.0). Some characteristic features, which were common for both earthquakes, were revealed for changes in the local ionosphere region state over the epicenters of the earthquakes
Keywords: delays of radio navigation sig¬nals, earthquakes, ionospheric variations
1. Afraimovich E.L., Astafyeva E.I., Gokhberg M. B., et al. The search for earthquake precursors in the variations of the total electron content in the ionosphere on GPS data during an earthquake HECTOR MINE October 16, 1999. In Solar-terrestrial relations and electromagnetic precursors of earthquakes: 3rd  Intern. conf., Vol. 1, 3—18 (IZMIRAN, Moscow, 2004) [in Russian].
2. Bondur V. G., Smirnov V. M. Ionospheric disturbances during the preparation of seismic events according to satellite navigation systems.  Modern problems of remote sensing of the Earth from space: Proceedings, Is. 3, Vol. II, 190—198 (ISR RAS, Moscow, 2006) [in Russian].
3. Bondur V. G., Smirnov V. M. Monitoring the ionospheric precursors tsunamigenic earthquakes according to satellite navigation systems. Proc. of 31st Int. Symp. on Remote Sensing of Environment, 190—197 (St. Petersburg, 2005) [in Russian].
4. Dedenok V. P., Tkachenko A. O., Deyneko V. M., Reznikov Yu. V. Monitoring of disturbances in a local spatio-temporal region of the ionosphere from data of a network of receiving stations for satellite radio navigation signals, Kosm. nauka tehnol., 17 (6), 68—73 (2011) [in Russian].
5. Zaharenkova I. E., Shagimuratov I. I., Lagovskij A. F., Krankovskij A. Variations in the total electron content of the ionosphere during the Kaliningrad earthquake of September 21, 2004. Vestnik of MSTU,  9 (3), 434—439 (2006) [in Russian].
6. Smirnov V. M., Smirnova E. V. Detection of seismoionospheric variations during geomagnetic disturbances on these navigation systems.  Actual Problems of Remote Sensing of the Earth from space, Is. 3, Vol. II, 242—246 (Izd-vo OOO «Azbuka-2000», Moscow, 2006) [in Russian].
7. Dedenok V., Tkachenko A. Monitoring of ionosphere perturbations preceding high intensive earthquakes on data from satellite radio navigation signal receiver network.  Natural Cataclysms and Global Problems of the Modern Civilization: Abstracts of the Internat. Congress, 40—41 (Istanbul, Turkey, 2011).
8. Hayakawa M., Molchanov O. A. Seismo-Electromagnetics: Lithosphere-Atmosphere-Ionosphere.  TERRAPUB, Tokyo, Japan, 313 p. (2002).
9. Heki K. Ionospheric electron enhancement preceding the 2011 Tohoku-Oki earthquake. Geophys. Res. Lett., 38, P. L17312, 5 p. (2011).
10. Liu J., Chen S., Chen Y., et al. Seismo-Ionospheric Precursors of the 26 December 2006 M 7.0 Pingtung Earthquake Doublet.  Terrestrial atmospheric and oceanic sciences,  19 (6), 751—759 (2008).
11. Liu J. Y., Chuo Y. J., Shan S. J., et al. Pre-earthquake ionospheric anomalies registered by continuous GPS TEC measurement.  Ann. geophys., 22, 1585—1593 (2004).
12. Liu J. Y., Le H., Chen Y. I., et al. Observations and simulations of seismoionospheric GPS total electron content anomalies before the 12 January 2010 M7 Haiti earthquake.  J. Geophys. Res., 116, A04302, 9 p. (2011),
13. Saroso S., Liu J., Hattori K., Chen C. Ionospheric GPS TEC anomalies and M> 5.9 earthquakes in Indonesia during 1993 — 2002.  Terrestrial atmospheric and oceanic sciences, 19, 481—488 (2008).