On the relationship of temporary changes in the Earth’s magnetic field with solar activity 19—24 cycles
DOI:
https://doi.org/10.15407/dopovidi2022.01.072Keywords:
solar activity, geomagnetic field BIGRF, planet EarthAbstract
The article presents the results of studies concerning the temporal changes of the main geomagnetic field BIGRF on the Earth’s surface with solar activity for 19-24 cycles. According to the results of the study, it was found that a decrease in the BIGRF field on the planet’s surface by 1800 nT corresponds to a decrease in solar activity, starting from cycle 19 to the present. Another important revealed regularity is a certain interdependence of the solar activity trend curves and the corresponding curve of the temporal gradient of the geomagnetic field (secular variation). A fairly clear connection between the temporal gradient of the geomagnetic field (secular variations) and 11-year and 22-year (Hale) cycles of solar activity is shown. Therefore, the change in the geomagnetic field with the period of the Hale cycle (20-22 years) is in good agreement with the nature of the large-scale field of the Sun. A particularly important result is the established connection with solar activity not only of variations and disturbances of the geomagnetic field of external nature, but also of changes and va riations of the main magnetic field of the Earth BIGRF, the generation mechanism of which is associated with its core.
Downloads
References
Olsen, N. & Stolle, C. (2016). Magnetic signatures of ionospheric and magnetospheric current systems during geomagnetic quiet conditions — an overview. Space Sci. Rev., 206, pp. 5-25. https: //doi. org/10. 1007/s11214-016-0279-7
Macmillan, S. (2020). Geomagnetic field, global pattern. In Gupta, H. (Ed. ). Encyclopedia of solid earth geophysics, Encyclopedia of Earth sciences series. Cham: Springer. https: //doi. org/10. 1007/978-3-030- 10475-7_115-1
Orlyuk, M. I. & Romenets, A. A. (2020). Spatial-temporal change of the geomagnetic field: environmental aspect. Geofizicheskiy Zhurnal, 42, No. 4. pp. 18-38. https: //doi. org/10. 24028/gzh. 0203-3100. v42i4. 2020. 210670
Finlay, C. C., Olsen, N., Kotsiaros, S., Gillet, N. & Toffner-Clausen, L. (2016). Recent geomagnetic secular variation from Swarm and ground observatories as estimated in the CHAOS-6 geomagnetic field model. Earth, Planets and Space, 68, 112. https: //doi. org/10. 1186/s40623-016-0486-1
Sumaruk, Yu. P. (2021). Spatio-temporal distribution of age variations of the geomagnetic field from external and internal sources. (Extended abstract of Doctor thesis). S. I. Subbotin Institute of Geophysics of the NAS of Ukraine, Kyiv (in Ukrainian).
Gvishiani, A. D., Starostenko, V. I., Sumaruk, Yu. P., Soloviev, A. A. & Legostaeva, O. V. (2015). Decrease in solar and geomagnetic activity from the 19th to the 24th solar cycle. Geomagnetism and Aeronomy, 55, No. 3, pp. 314-322 (in Russian).
Sumaruk, T. P. & Sumaruk, P. V. (2020). Reflection of the solar activity Hale cycles on the geomagnetic field secular variations. Geofizicheskiy Zhurnal, 42, No 5, pp. 183-192 (in Ukrainian). https: //doi. org/10. 24028/gzh. 0203-3100. v42i5. 2020. 215081
Orlyuk, M. I., Marchenko, A. V. & Romenets, A. A. (2017). Spatial-temporeral changes in the geomagnetic field and seismisity. Geofizicheskiy Zhurnal, 39, No. 6, pp. 84-105 (in Russian). https: //doi. org/10. 24028/gzh. 0203-3100. v39i6. 2017. 116371
Du, Z. L. (2011). The correlation between solar and geomagnetic activity — Part 2: Long-term trends. Ann. Geophys., 29, pp. 1341-1348. https: //doi. org/10. 5194/angeo-29-1341-2011
Mursula, K., Manoharan, P., Nandy, D., Tanskanen, E. & Verronen, P. (2013). Long-term solar activity and its implications to the heliosphere, geomagnetic activity, and the Earth’s climate. Preface to the Special Issue on Space Climate. J. Space Weather Space Clim., 3, A21. https: //doi. org/10. 1051/swsc/2013043
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Reports of the National Academy of Sciences of Ukraine
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
