On global ultralow frequency electromagnetic signals prior to earthquakes

Category: 16-1
N.A. Kosterin, V.A. Pilipenko, E.M. Dmitriev


UDC 550.344.385550.385.37



N.A. Kosterin, V.A. Pilipenko, E.M. Dmitriev


Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia


Abstract. We analyzed in detail some of global electromagnetic ULF signals supposedly occurring before earthquakes, as was reported in numerous publications and reports from the Northern Caucasus Observatory. However, the comparison of these “precursory” signals with data from other mid-latitude magnetic stations showed that an entire set of morphological properties of these signals: typical frequencies and waveforms, occurrence local time, latitudinal dependence of amplitude, etc., indicate that they belong to typical magnetospheric Pi2 and Рс3-4 pulsations. Thus, there is no convincing evidence of the quasi-monochromatic ULF signal occurrence preceding earthquakes.


Keywords: electromagnetic precursors of earthquakes, anomalous ULF signals, geomagnetic pulsations.


Bakhmutov V.G., Sedova F.I, and Mozgovaya T.А. Morphological siqns in the structure of geomagnetic variations during the period of preparation of the strongest earthquake, March 25, 1998 in Antarctic, Ukrainian Antarctical Journal, 2003, no. 1, pp. 54–60.

Belov S.V., Migunov N.I., and Sobolev G.A., Magnetic Effects Accompanying Strong Earthquakes in Kamchatka, Geomagn. Aeron., 1974, vol. 14, no. 2, pp. 380–382.

Fraser-Smith A.C., Bernardi A., McGill P.R., Bowen M.M., Ladd M.E., Helliwell R.A., Villard O.G. Low-frequency magnetic field measurements near the epicenter of the Ms7.1 Loma Prieta earthquake, Geophys. Res. Lett., 1990, vol. 17, pp. 1465.

Gogatishvili Ya.M. Geomagnetic precursors of strong earthquakes in spectrum of geomagnetic pulsations. Geomagn Aeron, 1984, vol. 24, no. 4, pp. 697–700.

Guglielmi A. V. and Levshenko V. T., Electromagnetic Signals from Earthquakes, Fiz. Zemli, 1994, no. 5, pp. 65–70.

Hayakawa M., Itoh T., and Smirnova N. Fractal analysis of ULF geomagnetic data associated with the Guam on August 8, 1993, Geophys. Res. Lett., 1999, vol. 26, pp. 2797–2800.

Hattori K. ULF Geomagnetic changes associated with large earthquakes, TAO. 2004, vol. 15, pp. 329–360.

Iyemori T., Nose M., Han D-S., Gao Y-F., Hashizume M., Choosakul N., Shinagawa H., Tanaka Y., Utsugi M., Saito A., McCreadie H., Odagi Y., and Yang F-X. Geomagnetic pulsations caused by the Sumatra earthquake on December 26, 2004, Geophys. Res. Lett. 2005, vol. 32. L20807.

Kikuchi T. and Araki T. Horizontal transmission of the polar electric field to the equator, J. Atmos. Terr. Phys., 1979, vol. 41, pp. 927–936.

Kim K.-H., Takahashi K., Lee D.-H., Sutcliffe P.R., and Yumoto K. Pi2 pulsations associated with poleward boundary intensifications during the absence of substorms, J. Geophys. Res. 2005, vol. 110. A01217. 

Kopytenko Y.A., Ismaguilov V.S., Hattori K., and Hayakawa M. Anomaly disturbances of the magnetic fields before the strong earthquake in Japan on March 11, 2011, Ann. Geophys. 2012, vol. 55, P.101–107.

Kunitsyn V. E. and Shalimov S. L. Ultralow-frequency variations of the magnetic field during the propagation of acoustic-gravitaty waves in the ionosphere, Moscow University Physics Bulletin, 2011, vol. 66, Is. 5, pp 485-488.

Love J.J., Thomas J.N. Insignificant solar-terrestrial triggering of earthquakes, Geophys. Res. Lett. 2013, vol. 40, pp. 1165–1170.

Moore G.M. Magnetic disturbances preceding the 1964 Alaska earthquake, Nature. 1964, vol. 203. N4944, pp. 508–509.

Nose M., Iyemori T., Wang L., Hitchman A., Matzka J., Feller M., Egdorf S., Gilder S., Kumasaka N., Koga K., Matsumoto H., Koshiishi H., Cifuentes-Nava G., Curto J.J., Segarra A., Çelik C. Wp index: A new substorm index derived from high-resolution geomagnetic field data at low latitude. Space Weather, 2012, vol. 10, S08002.

Roder H., Braun T., Shiuhmann W., Boschi E., Buttner R., and Zimanowski B. Great Sumatra earthquake registers on electrostatic sensor, EOS. 2005, vol. 86, N 45, pp. 445.

Schekotov A., Molchanov O., Yagova N., Fedorov E., Chebrov V., Sinitsin V., Gordeev E., Belyaev G., and Hayakawa M., Seismic activity in Kamchatka and the parameters of natural ULF/ELF emissions, Proc. XXIX Annual Seminar “Physics of Auroral Phenomena”, Apatity, 2006, pp. 161–164.

Sobisevich A. L., Lester M., Hughes W.J., and Singer H.J. Polarization patterns of Pi2 magnetic pulsations and the substorm current wedge, J. Geophys. Res. 1983, vol. 88, pp. 7958.

Sobisevich L., Kanonidi K., and Sobisevich A. Ultra low-frequency electromagnetic variation observed prior to development of an earthquake followed by tsunami, Геофизический журнал. 2010. Т. 32, № 4. С.152–157.

Sobisevich A. L. and Gusev V.А. Low-frequency wave processes in geosphere preceeding strong seismic events. Ekstremalnye priridnye yavleniya i katastrofy (Extreme natural phenomena and catastrophes), vol. 1, Moscow: IFZ RAN, 2010.

Sobisevich A. L., Kanonidi K. Kh., Sobisevich L. E., Gridnev D. G. On a class of electromagnetic disturbances preceding strong earthquakes, Seismic Instruments, 2010, vol. 46, Is. 3, pp 228-233.

Sobisevich L.E., Kanonidi K.Kh., and Sobisevich A.L., Ultra low-frequency electromagnetic disturbances appearing before strong seismic events, Dokl. Earth Sci., 2009, vol. 429A, no. 9, pp. 1549–1552

Sobisevich L.E., Kanonidi K.Kh., and Sobisevich A.L., Observations of ultra-low-frequency geomagnetic disturbances reflecting the processes of the preparation and development of tsunamigenic earthquakes, Dokl. Earth Sci., 2010, vol. 435, no. 2, pp. 1627–1632

Sobisevich L.E., Sobisevich A.L., and Kanonidi K.Kh., Anomalous geomagnetic disturbances induced by disastrous tsunamigenic earthquakes in Indonesia, Geofiz. Zh., 2012, vol. 34, no. 5, pp. 22–37.

Sobisevich L.E., Kanonidi K.Kh., Sobisevich A.L., and Miseyuk O.I. Geomagnetic disturbances in the geomagnetic field’s variations at stages of preparation and implementation of the Elazig (March 8, 2010) and M 5.3 (January 19, 2011) earthquakes in Turkey, Dokl. Earth Sci., 2013, vol., no. 1, pp 324-327

Sobolev G.A., Zakrzhevskaya N.A., and Kharin E.P., On the Relation between Seismicity and Magnetic Storms, Izv. Phys. Solid Earth, 2001, vol. 37, no. 11, pp. 917–927.

Surkov V.V., Pilipenko V.A. Magnetic effects due to earthquakes and underground explosions: a review, Annali di Geofisica. 1997. XL, N 2, pp. 1–13.

Surkov V., Pilipenko V. The physics of pre-seismic electromagnetic ULF signals, Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes / Ed. M. Hayakawa, Tokyo: TERRAPUB, 1999, pp. 357–370.

Sutcliffe P.R., Yumoto K. Dayside Pi 2 pulsations at low latitudes, Geophys. Res. Lett. 1989, vol. 16, pp. 887–890.

Thomas J.N., Love J.J., Johnston M.J.S. On the reported magnetic precursor of the 1989 Loma Prieta earthquake, Phys. Earth Planet. Inter. 2009, vol. 173, pp. 207–215. 

Thomas J.N., Love J.J., Johnston M.J.S., Yumoto K. On the reported magnetic precursor of the 1993 Guam earthquake, Geophys. Res. Lett. 2009, vol. 36. L16301, doi:10.1029/2009GL039020.