Ukrainian Antarctic journal

No 16 (2017): Ukrainian Antarctic Journal


O.I. Maksimenko
S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kyiv
O.Ya. Shenderovskaya
S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kyiv
Published June 5, 2018
  • shape of Sq variations,
  • autumn – spring asymmetry,
  • trend of Sq daily amplitude


The spatial ambiguity of the magnitude of centennial trends in the Sq variations diurnal amplitudes determined the investigation of this question in the region of negative century variations geomagnetic field. Objective. To study the characteristics (trends of diurnal amplitudes and shapes) of solar-diurnal Sq variations at the Antarctic observatory AIA. Methods. Analysis of geomagnetic field monitoring data at the observatory for the period 1958-1991. Exclusion of the effect of the dependence ofthe daily amplitude of Sq variations on the solar activity index F10.7 using the regression analysis residual method. Results. From the analysis of the shape of Sq variations, seasonal features of SqZ, SqY were obtained: autumn-spring asymmetry and an additional morning extremum in the daily course of Sq winter (April-September) type. Seasonal differences were found both in the mean monthly values of the daily amplitude of Sq variations and in the values of their long-term trend for 33 years. Conclusions. The revealed positive trends of the average annual daily amplitudes of Sq variations were 11% for the eastern SqY and 17-20% for the vertical SqZ variation. The observed variation in the trend value of the annual amplitudes Sq is apparently due to seasonal variations of the physical parameters that determine Sq.


  1. Maksymenko, О.I., Bakhmutov, V.G., Kilifarska, N., Shevderovskaja, O.Ya. 2013. Trendovye izmenenija geomagnitnogo polja na observatorii "Argentinskie ostrova"- efect v Sq-variatsiiah [Trend changes in the geomagnetic field at the Argentine Islands observatory - effect in Sq-variations]. Ukrainskij Antarctychnyj Zhurnal [Ukrainian Antarctic Journal], 12, 62-68.
  2. Maksymenko, О.I., Shevderovskaja, O.Ya. 2014. Geomagnetnye solnechno-sutochnye variatsyi v Antarktike. Sviaz s solnechnoi aktivnostu [Geomagnetic solar-diurnal variations in the Antarctic. Relatioship with solar activity]. Ukrainskij Antarctychnyj Zhurnal [Ukrainian Antarctic Journal], 13, 67-74.
  3. Maksymenko, О.I., Shevderovskaja, O.Ya. 2015. Osobennosti formy solnechno-sutochnyh geomagnitnykh SqY-variatsii nad Antarktikoi [Features of the form of solar-daily geomagnetic SqY variations over the Antarctic]. Mezhdistsyplinarnye issledovaniia v nauke i obrazovanii [Interdisciplinary research in science and education], 3, H.
  4. Yaremenko, L.N., Mishchenko, Yu.P., Shevderovskaja O.Ya. 2004. Glavnoe magnitnoe pole i vekovye variatsii v predelakh zemli [The main magnetic field and age-old variations within the Earth's mantle]. Geofizicheskii zhurnal [Geophysical Journal], 26, 1, 117-122.
  5. Blas de Haro Barbas, B.F., Elias, A.Q. Cnossen I., Zossi de Artiqas, M. 2013. Lonq-term chanqes in solar quiet (Sq) qeomaqnetic variations related to Earth's maqnetic field secular variation. J. Geophys. Res. Space Physics, 118, .3712-3718.
  6. Cnossen, I., Richmond, A.D. Wiltberqer, M. 2011. The dependence of the coupled magnetosphere-ionospherethermosphere system on the Earth's magnetic dipole moment. J. Geophys. Res., 117, A05302.
  7. Cnossen, I., Richmond, A. D. 2013. Chanqes in the Earth's magnetic field over the past century: Effects on the ionosphere-thermosphere system and solar quiet (Sq) magnetic variation. J. Geophys. Res. Space Physics, 118, 849-858.
  8. Duma, Q. 2003. Ruzhin Diurnal chanqes of earthquake activity and geomaqnetic Sq-variations. Natural Hazards and Earth System Sciences, 3, 171-177.
  9. Kuvshinov, A.V. 2008. 3-D global induction in the oceans and solid Earth:Recent progress in modelinq magnetic and electric fields from sources of magnetospheric, ionospheric and oceanic origin. Surv. Geophys, 29, 139-186.
  10. Lukianova, R. and Christiansen, F., 2006. Modelinq of the global distribution of ionospheric electric fields based on realistic maps of field-aligned currents. J . Geopys.Res., 111, A3.
  11. Pedatella, N.M., Forbes, J.M. and Richmond, A.D. 2011. Seasonal and longitudinal variations of the solar quiet (Sq)current system during solar minimum determined by CHAMP satellite magnetic field observations. J. Geophys. Res., 116, A04317,
  12. Shinbori, et al. 2014. Lonq-term variation in the upper atmosphere as seen in the qeomagnetic solar quiet daily variation. Earth, Planets and Space, 66, 155.
  13. Steninq, R. J. 2008.The shape of the Sq current system. Ann. Geophys, 26, 1767-1775.
  14. Steninq, R.J, Reztsova, T., Ivers, D., Turner, J. and. Winch, D. 2005. Morninq quiet-time ionospheric current reverсаl at mid to hiqh latitudes. Annales Geophysical, 23, 385-391.
  15. Steninq, R.J. and Reztsova, T. 2007. The daily variations of the vertical (Z) element of the Geomaqnetic field around the coast of mainland Australia. Earth Planets Space, 59, 579-584.
  16. Takeda, M. 2002. Features of qlobal geomaqnetic Sq field from 1980 to 1990. J. Geophys. Res, 107, 4-8.
  17. Takeda, M. 2013. Difference in seasonal and lonq-term variations in geomaqnetic Sq fields between geomagnetic Y and Z components. J. Geophys. Res.: Space Physics, 118, 5, 522-2526.
  18. Thu H. Pham Thi, Amory-Mazaudier, C., Le Huy, M. 2011. Sq field characteristics at Phu Thuy, Vietnam, durinq solar cycle 23:comparisons with Sq field in other lonqitude sectors. Annales Geophysical, 29, 1-17.
  19. Torta, J., Саntiaqo Marсаl,. Curto, Juan J et al. 2010. Behaviour of the quiet-day geomaqnetic variation at Livinqston Island and variability of the Sq focus position in the South American-Antarctic Peninsula reqion. Earth Planets Space, 62, 297-307.
  20. Yamazaki, Y., Yumoto, K., Cardinal M. et al. 2011. An empirical model of the quiet daily geomagnetic field variation. J. Geophys. Res. 116, A10.
  21. Yamazaki and Yumoto. 2012. Lonq-term behavior of annual and semi-annual Sq variations. Earth Planets Space, 64, 417-423.
  22. Yamazaki, Y., Kosch, M.J. 2014. Geomagnetic lunar and solar daily variations durinq the last 100 years. Journal of Geophysical Research: Space Physics, 119, 8.