Variations of induction vector in North America

V. Babak, I. Rokityanskiy, A. Tereshyn


The results of the magnetovariational data processing of 13 observatories in North America for 24 years are presented. In addition to the annual variation of the induction vectors, which is widely known, 11-year periodicity is found. It is a new geophysical phenomenon. While looking for precursory signals associated with earthquakes, these periodic variations must be taken into account.


induction vector Wiese; 11-year variation of the induction vector; earthquakes precursors


Klymkovyc T. A., 2009. Peculiarities of temporal variations of anomalous magnetic field and induction vectors in the Transcarpathian seismic-active trough: Dr. phys.-math. sci., Kiev, 195 p. (in Ukrainian).

Moroz Yu. F., Smirnov S. E., Moroz T. A., 2006. The results of monitoring of geomagnetic field variations in Kamchatka. Fizika Zemli (3), 49—56 (in Russian).

Saraev A. K, Antaschuk K. M., Simakov A. E., Bakirov K. B., 2013. Multi-parameters monitoring of electromagnetic earthquake precursors frequency range 0.1 Hz — 1 MHz. Seysmicheskie pribory 49(2), 5—26 (in Russian).

Kharin E. P., 1982. Changes in transfer functions with time. Geophys. Surv. (4), 455—466.

Rikitake T., 1979. Changes in the direction of magnetic vector of short-period geomagnetic variations before the 1972 Sitka, Alaska, Earthquake. J. Geomag. Geoelectr. (31), 441—448.

Rokityansky I. I. 1982. Geoelectromagnetic investigation of the Earth's crust and upper mantle. – Springer Verlag, Berlin-Heidelberg-New York, 381p.

Rokityansky I. I., Klymkovych T. A., Babak V. I., Isac A., 2012. Annual and diurnal variations of induction vectors in relation to geodynamic processes. Geomatics, Natural Hazard and Risk 3(3), 239—249.

Shiraki M., Yanagihara K., 1977. Transfer function at Kakioka (Part II). Reevaluation of Their Secular Changes. Memoirs of the Kakioka magnetic observatory 17, 19—25.

Sneed M., Galloway D. L., Cunningham W. L., 2003. Earthquakes — rattling the Earth’s plumbing system. U. S. Geological Survey, science for changing world.

Zeng X., Lin Y., Xu C., Zhao M., Zhao Y., 1998. Manual on the forecasting of natural disasters: geomagnetic methods. UN International Workshop on Geomagnetic Methods, Beijing, China, 12—18 February 1998, P. 147.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons License
Geofizicheskiy Zhurnal is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Flag Counter