Spatial and time variations in critical frequencies of the ionospheric F region above the zone of equatorial earthquake preparation

A. Kh. Depueva and N. M. Rotanova, “Modification of the Low-Latitude and Equatorial Ionosphere before Earthquakes,” Geomagn. Aeron. 40(6), 50–54 (2000) [Geomagn. Aeron. 40, 728–732 (2000)].

A. Depueva and N. Rotanova, “Low-Latitude Ionospheric Disturbances Associated with Earthquakes,” Ann. Geofis. 44(2), 221–228 (2001).

A. Kh. Depueva, A. V. Mikhailov, and V. Kh. Depuev, “Quiet Time F2-Layer Disturbances at Geomagnetic Equator,” Int. J. Geomagn. Aeron., No. 5, GI3001 (2005).

M. Devi, M. K. Barman, A. K. Barbara, and A. Depueva, “Ionospheric Electron Content near Anomaly Crest as a Precursor of Earthquake,” Indian J. Radio Space Phys. 30(1), 209–213 (2001).

T. V. Gaivoronskaya, “Ionospheric Variations in Seismic Regions” Fiz. Zemli, No. 3, 56–60 (2005).

M. Hayakawa and Y. Fujinawa, Electromagnetic Phenomena Related to Earthquake Prediction (Terrapub, Tokyo, 1994).

Y. Hobara and M. Parrot, “Ionospheric Perturbations Linked to a Very Powerful Seismic Event,” J. Atmos. Sol.-Terr. Phys. 67, 677–685 (2005).

R. P. Kane and E. R. Paula, “Comparison of FoF2 Characteristics at Similar Low Latitudes but Different Longitudes in the South American Region,” J. Atmos. Terr. Phys. 44(1), 9–11 (1982).

V. A. Liperovsky, O. A. Pokhotelov, and S. L. Shalimov, Ionospheric Precursors of Earthquakes (Nauka, Moscow, 1992) [in Russian].

J. Y. Liu, Y. J. Chuo, and Y. I. Chen, “Ionospheric GPS TEC Perturbations prior to the 20 September 1999, Chi-Chi Earthquake,” Geophys. Res. Lett. 7, 1383–1386 (2001).

A. V. Mikhailov, A. Kh. Depueva, and T. Yu. Leshchinskaya, “Morphology of Quiet Time F2-Layer Disturbances: High to Lower Latitudes,” Int. J. Geomagn. Aeron., No. 5, GI1006 (2004).

Singh Birbal, Kushwah Vinod, O. P. Singh, et al., “Ionospheric Perturbations Caused by Some Major Earthquakes in India,” Phys. Chem. Earth 29(4–9), 537–550 (2004).