Electromagnetic precursors of earthquakes and their recurrence
Analysis of the electromagnetic activity of aftershocks, which epicenters are located close to each other, was carried out using the data recorded by Borok and College Geophysical Observatories. It is found that in the case when the first earthquake is accompanied by its electromagnetic precursor, every next aftershock from this series is also preceded by its precursor. The concrete examples are presented and the results are discussed.
Full Text:PDF (Русский)
Adushkin V.V., Rjabova S.A., Spivak A.A., Harlamov V.A., 2012. Response to seismic background geomagnetic variations. Doklady RAN 444 (3), 304— 308 (in Russian).
Atmospheric and ionospheric electromagnetic phenomena associated with earthquakes, 1999. (Ed. M. Hayakawa). Tokyo: TERRAPUB, 1996 p.
BernardiA., Fraser-SmithA. C, McGillP.R., Villard O. G.Jr, 1991. ULF magnetic field measurements near the epicenter of the Ms 7.1 Loma Prieta earthquake. Phys. Earth Planet. Int. 68, 45—63.
Dovbnja B. V., Zotov O.D., Mostrjukov A.Ju., Shhepet- nov R.V., 2006. Electromagnetic signals in the time vicinity of earthquakes. Fizika Zemli (8), 60— 65 (in Russian).
Fraser-Smith A. C., Bernardi A., McGill P. R., Ladd M. E., Helliwell RA, Villard O.G.Jr, 1990. Low-frequency magnetic field measurements near the epicenter of the Ms 7.1 Loma Prieta earthquake. Geophys. Res. Lett. 17, 1465—1468.
Gul'el'mi A. V., 2007. Ultra-low-frequency electromagnetic waves in the crust and in the Earth's magnetosphere. Uspehi fizicheskih nauk 177(12), 1257—1276 (in Russian).
Gul'el'mi A. V., Zotov O.D., 2012. On magnetic disturbances before strong earthquakes. Fizika Zem- li (2), 84—87 (in Russian).
Hattori K., 2004. ULF Geomagnetic changes associated with large earthquakes. TAO 15(3), 329—360.
Kopytenko Y.A., Matishvili T. G., Voronov P.M., Kopy- tenko E.A., Molchanov O.A., 1993. Detection of ultralow-frequency emissions connected with the Spitak earthquake and its aftershock activity, based on geomagnetic pulsations data at Dusheti and Vardzia observatories. Phys. Earth Planet. Int. 77, 85—95.
Seismo electromagnetics lithosphere-atmosphere-ionosphere Coupling, 2002. (Eds M. Hayakawa, O. A. Molchanov). Tokyo: TERRAPUB, 477 p.
Sobisevich L. E., Sobisevich A. L., 2010. Dilatancy structure and electromagnetic disturbances VLF range on the stages of preparation and development of a large seismic event. Vestnik ONZ RAN 2 (Z6027), 202—213 (in Russian).
Sobisevich L.E., Kanonidi K.H., Sobisevich A.L., 2010. Observations of ULF geomagnetic disturbances, reflecting the processes of preparation and development of the tsunami earthquakes. Doklady RAN 435(4), 548—553 (in Russian).
Sobolev G.A., Zakrzhevskaja N.A., Harin E.P., 2001. On the relationship of seismicity with magnetic storms. Fizika Zemli (11), 62—72 (in Russian).
Zakrzhevskaja N.A., Sobolev G.A., 2002. The possible influence of magnetic storms on seismicity. Fizika Zemli (4), 3—15 (in Russian).
Zakrzhevskaja N.A., Sobolev G.A., 2004. Effect of magnetic storms with sudden onset on seismicity in different regions. Vulkanologija i sejsmologija (3), 63—75 (in Russian).