Temporal changes of the secular variations of geomagnetic field in Europe
Heading:
| 1Sumaruk, Yu.P, 1Sumaruk, TP 1S.I. Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine |
| Space Sci.&Technol. 2016, 22 ;(3):32-40 |
| https://doi.org/10.15407/knit2016.03.032 |
| Publication Language: Ukrainian |
Abstract: We investigated temporal changes of the secular variations of geomagnetic field intensity using perennial series of observations of the European geomagnetic observatories. It is shown that secular variations have two components: the first – quasiconstant, from the internal sources, and the second – variable, from the external sources. The magnitude and sign of the external sources component is highly correlated to the magnitude and sign of the large scale magnetic field of the Sun and, correspondingly, to the magnitude and sign of the mean annual southern component of the interplanetary magnetic field.
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| Keywords: geomagnetic field, secular variations, solar activity |
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3. Gvishiani A. D., Starostenko V. I., Sumaruk Y. P., Soloviev A. A., Legostaeva O. V. A decrease in solar and geomagnetic activity from cycle 19 to cycle 24. Geomagnetism and Aeronomy, 55 (3), 314—322 (2015) [in Russian].
https://doi.org/10.1134/s0016793215030093
4. Golovkov V. P., Simonyan A. O. The Jerks in Geomagnetic Secular Variations in the Interval of Years 1930—1980. Geomagnetism and Aeronomy, 29 (1), 164—167 (1989) [in Russian].
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6. Kolomijtseva G. I., Sayutina O. A. Peculiarities of the secular variation of the geomagnetic field in polar regions. Geomagnetism and Aeronomy, 28 (6), 1038—1041 (1988) [in Russian].
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https://doi.org/10.1016/j.rgg.2008.04.006
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9. Obridko V. N., Golyshev S. A., Levitin A. E. Relation between the structure of the large-scale solar magnetic field in the activity cycles and IMF governing geomagnetic activity. Geomagnetism and Aeronomy, 44 (4), 449—552 [in Russian].
10. Orlov V. P., Ivchenko M. I., Bazarzhapov A. D., Kolomijceva G. I. The age-old course of the magnetic field for the 1960 - 1965 period, 70 p. (IZMIRAN, Moscow, 1968) [in Russian].
11. Petrova G. N., Burlackaja S. P. Modern views on the secular variations. Problems in the Study paleo-secular variations of the magnetic field of the Earth, 5—15 (Izd-vo AN SSSR, Vladivostok, 1979) [in Russian].
12. Sumaruk Yu. P., Sumaruk P. V. Special features of secular variations of geomagnetic field in the northern polar area of the Earth. Geophysical journal, 35 (2), 137—145 (2013) [in Ukrainian].
13. Shevnin A. D., Levitin A. E., Gromova L. I., Dremukhina L. A., Kaynara L. N. Solar cyclic variation in magnetic elements of Moscow observatory. Geomagnetism and Aeronomy, 49 (3), 315—320 (2009) [in Russian].
https://doi.org/10.1134/s0016793209030037
14. Malin S., Hodder B. Was the 1970 geomagnetic jerk of internal or external origin? Nature, 296, 726—728 (1982).
https://doi.org/10.1038/296726a0
15. Mandea M. How well is the main field secular variations known? Contribution to Geophysics and Geodesy, 31 (1), 233—243 (2001).
16. Mandea M., Bellanger E., Le Mouel J.-L. A geomagnetic jerk for the end of the 20th centure. Earth Planet Sci. Lett., N 183, 369—373 (2000).
17. Sumaruk Yu. P. On external sources of secular variations of the Earth’s magnetic field. Contribution to Geophysics and Geodesy, 31 (1), 353—354 (2001).
18. Verbanac G., Luhr H., Rother M., Korte M., Mandea M. Contributions of the external field to the observatory annual means and proposal for their corrections. Earth Planet Space, 59, 251—257 (2007).
https://doi.org/10.1186/BF03353102