Unique variations of the total electron content in the preparation period of Haitian earthquake (M7.9) on January 12, 2010

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• 作者：S. A. Pulinets (1) (2)
  K. G. Tsybulya (1)
  
• 刊名：Geomagnetism and Aeronomy
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：50
• 期：5
• 页码：686-689
• 全文大小：253KB
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  5. Pulinets, S.A., Bondur, V.G., Tsidilina, M.N., and Gaponova, M.V., Verification of the Concept of Seismoionospheric Coupling under Quiet Heliogeomagnetic Conditions, Using the Wenchuan (China) Earthquake of May 12, 2008 as an Example, / Geomagn. Aeron., 2010, vol. 50, no. 2, pp. 251-63 [ / Geomagn. Aeron., 2010, vol. 50, pp. 231-42]. g/10.1134/S0016793210020118">CrossRef
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  9. Zakharenkova, I.E., Krankowski, A., and Shagimuratov, I.I., Modification of the Low-Latitude 21 Ionosphere before December 26, 2004 Indonesian Earthquake, / Nat. Hazard Earth Syst. Sci., 2006, vol. 6, pp. 817-23. g/10.5194/nhess-6-817-2006">CrossRef
  10. Zakharenkova, I.E., Shagimuratov, I.I., Tepenitzina, N.Yu., and Krankowski, A., Anomalous Modification of the Ionospheric Total Electron Content Prior to the September 26, 2005 Peru Earthquake, / J. Atmos. Solar-Terr. Phys., 2008, vol. 70, pp. 1919-928. g/10.1016/j.jastp.2008.06.003">CrossRef
  
• 作者单位：S. A. Pulinets (1) (2)
  K. G. Tsybulya (1)
  
  1. Institute of Applied Geophysics, Rostokinskaya ul. 9, Moscow, 129128, Russia
  2. Institute for Space Research, Russian Academy of Sciences, ul. Profsoyuznaya 84/32, GSP-7, Moscow, 117810, Russia
  
• ISSN：1555-645X

文摘

Variations of the total electron content according to the index IONEX IGS in the period of preparation of the earthquake in Haiti (M7.9) on January 12, 2010, are considered. The situation is exceptional owing to the unique position of the island of Haiti relative to the structure of the ionosphere over the Caribbean Sea: the ionospheric region over Haiti is in the trough formed by the northern slope of the equatorial anomaly and additional maximum formed at latitudes of approximately 30° N within this longitudinal interval. Distortion of the shape of the equatorial anomaly, total decrease in the electron content in the equatorial anomaly a few days prior to the earthquake, increase in the electron concentration directly over the earthquake epicenter a few days prior to the earthquake, increase in the additional maximum at latitudes of ?0° N, and formation of an additional maximum in the Southern Hemisphere in the region conjugated to the additional maximum in the Northern Hemisphere in the periods of its intensification are observed. The configuration of the equatorial anomaly is restored after the earthquake.