Ukrainian Antarctic Journal

No 12 (2013): Ukrainian Antarctic Journal
Articles

Trend changes of the geomagnetic field at the observatory “Argentine Island”: effect in Sq-variations

PDF (Українська)
  • O. I. Maksimenko,
  • V. G. Bakhmutov,
  • N.A. Kilifarska,
  • O. Ya. Shenderovska
O. I. Maksimenko
S. I. Subbotin Institute of Geophysics, NAS of Ukraine, Kyiv
V. G. Bakhmutov
S.I. Subbotin Institute of Geophysics, NAS of Ukraine, Kyiv
N.A. Kilifarska
National Institute of Geophysics, Geodesy & Geography Bulgarian Academy of Sciences, Sofia
O. Ya. Shenderovska
S.I. Subbotina Institute of Geophysics of NAS of Ukraine, Kyiv
DOI: https://doi.org/10.33275/1727-7485.12.2013.249
Published December 15, 2013
Keywords
  • secular and Sq-geomagnetic variations,
  • ionospheric conductivity,
  • trend
How to Cite
Maksimenko, O. I., Bakhmutov, V. G., Kilifarska, N., & Shenderovska, O. Y. (2013). Trend changes of the geomagnetic field at the observatory “Argentine Island”: effect in Sq-variations. Ukrainian Antarctic Journal, (12), 62-68. https://doi.org/10.33275/1727-7485.12.2013.249

Abstract

Trends of the geomagnetic Sq-variation daily amplitudes on the observatory "Akademic Vernadsky" were obtained with the weakening of the end of the interval 1958 to 2010. The daily Sq-variation amplitudes have trends with the same magnitude of 0.06 nT / year, but different signs for horizontal. SqH and vertical. SqZ components of the geomagnetic variations that are defined by a decrease of 8.6% and 11.3% increase in. The ionospheric conductivity is increasing on ~ 16 % in 50 years. It was found that the secular variations of the magnetic field gives 10% contribution to the trend SqH-geomagnetic variations in the summer, and the effect of Ap index and СО2 anomalies failed to reveal to obs. AIA with the negative trend of the magnetic field in the last century. 

PDF (Українська)

References

  1. Danilov, A. (2012). Dolgovremenny`e trendy` v verxnej atmosfere (obzor) [Longterm trends in the upper atmosphere (a review)]. Geomagnetizm i ae`ronomiya, 52(3), 291–312.
  2. Yaremenko, L.N. (1992). Solnechny`e sutochny`e variacii geomagnitnogo polya [Sun daily variations of the geomagnetic field]. Kyiv, Naukova Dumka.
  3. Cnossen I., & Richmond, A. (2012). Changes in the Earth's magnetic field over the past century: effects on the ionosphere-thermosphere system and solar quiet Sq-magnetic variation. Journal of Geophysical Research.
  4. Elias Ana, G., Zossi de Artigas, M., & de Haro Barbas, B. F. (2010). Trends in the solar quiet geomagnetic field variation linked to the Earth’s magnetic field secular variation and increasing concentrations of greenhouse gase. Journal of Geophysical Research, 115(A8).
  5. Kilifarska, N. (2012). Climate variability – a concert for O2, H2O vapour and ”orchestra” . Tr. Seminara NANU i Fonda fundamental`ny`x issleedovanij Rossii “Problemy` i dostizheniya dolgosrochnogo meteorologicheskogo prognozirovaniya”. –5-7 October 2011. Kyiv, Nika-centr. pp. 167–179.
  6. Macmillan, S., & Droujinina, A. (2007). Long-term trends in geomagnetic daily variation. Earth Planets Space, 59, 391–395.
  7. Maksimenko, O.I. (2011). Some properties of ancient changes of total geomagnetic field at the observatory “Academic Vernadsky”. Theses of 5-th UAN Conf./Kyiv. p. 157.
  8. Takeda, M., Iyemori, T., & Saito, A. (2003). Relationship between electric field and currents in the ionosphere and the geomagnetic Sq field. Journal of Geophysical Research, 108(A5), 1183.
  9. Takeda, M. (2013). Contribution of wind, conductivity, and geomagnetic main field to the variation in the geomagnetic Sq field. Journal of Geophysical Research: Space Physics, 118(7), 4516–4522.
  10. Yamazaki, Y., Yumoto, K., Cardinal, M. et al. (2012). An empirical model of the quiet daily geomagnetic field variation.