Abstract
The frequency distributions of the diurnal and hourly indices of magnetic activity and also the hourly values of the geoeffective parameters of the solar wind over the seasons of the year were analyzed. Confirmation of the equinoctial and summer maximums of magnetic activity was obtained and their statistical significance was shown. Arguments confirming the “axial” and “equinoctial” mechanisms of formation of the equinoctial maximums are presented. An assumption is made that the summer maximum could occur as a result of the existence on the Sun of active Carrington longitudes.
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Bartels, J., Terrestrial-magnetic activity and its relation to solar phenomena, Terr. Magn. Atmos. Electr., 1932, vol. 37, no. 1, pp. 1–52. doi: 10.1029/TE037i001p00001
Boller, B.R. and Stolov, H.L., Kelvin-Helmholtz instability and the semiannual variation of geomagnetic activity, J. Geophys. Res., 1970, vol. 75, no. 31, pp. 6073–6084. doi 10.1029/JA075i031p06073
Cane, H.V. and Richardson, I.G., Interplanetary coronal mass ejection in the near-Earth solar wind during 1996–2002, J. Geophys. Res., 2003, vol. 108, no. A4. doi: 10.1029/2002JA009817
Cortie, A.L., Sun-spots and terrestrial magnetic phenomena 1898–1911, Mon. Not. R. Astron. Soc., 1912, vol. 73, pp. 52–60.
Echer, E., Gonzalez, W.D., and Tsurutani, B.T., Statistical studies of geomagnetic storms with peak Dst ≤ −50 from 1957 to 2008, J. Atmos. Sol.–Terr. Phys., 2011, vol. 3, nos. 11–12, pp. 1454–1459. doi: 10.1016/j.jastp.2011.04.021
Gonzalez, W.D., Joselyn, J.A., Kamide, Y., Kroehl, H.W., Rostoker, G., Tsurutani, B.T., and Vasyliunas, V.M., What is a geomagnetic storm?, J. Geophys. Res., 1994, vol. 99, no. A4, pp. 5771–5792. doi: 10.1029/93JA02867
Ivanov, K.G., Kharshiladze, A.F., and Romashets, E.P., Solar-terrestrial storms of October 2003. 1. Solar sources and near-Earth interplanetary disturbances, Geomagn. Aeron., (Engl. Transl.), 2005, vol. 45, no. 1, pp. 3–46.
Kimble, G., Kak pravil’no pol’zovat’sya statistikoi (How to use statistics correctly), Moscow: Finansy i statistika, 1982.
Lyatsky, W. and Tan, A., Latitudinal effect in semiannual variation of geomagnetic activity, J. Geophys. Res., 2003, vol. 108, no. A5. doi: 10.1029/20022JA009467
McIntosh, D.H., On the annual variation of magnetic disturbance, Philos. Tr. R. Soc. S-A, 1959, vol. 251, no. 1001, pp. 525–552. doi: 10.1098/rsta.1959.0010
Mursula, K., Tanskanen, E., and Love, J., Spring-fall asymmetry of substorm strength, geomagnetic activity and solar wind: Implications for semiannual variation and solar hemispheric asymmetry, J. Geophys. Res., 2011, vol. 38, no. A6, p. L06104. doi: 10.1029/2011GL046751
Nishida, A., Geomagnetic Diagnosis of the Magnetospher, New York: Springer, 1978.
Pugachev, V.S., Teoriya veroyatnostei i matematicheskaya statistika (Theory of probability and mathematical statistics), Moscow: Fizmatlit, 1979.
Russell, C.T. and McPherron, R.L., Semiannual variation of geomagnetic activity, J. Geophys. Res., 1973, vol. 78, no. A1, pp. 92–108. doi: 10.1029/JA078i001p00092
Svalgaard, L., Cliver, E.W., and Ling, A.G., The semiannual variation of great geomagnetic storms, Geophys. Res. Lett., 2002, vol. 29, no. 16, pp. 12–1–12-4. doi: 1029/2001GL014145
Tokumaru, M., Kojima, M., and Fujiki, K., Solar cycle evolution of the solar wind speed distribution from 1985 to 2008, J. Geophys. Res., 2010, vol. 115, no. A4. doi: 10.1029/2009JA014628
Vitinskii, Yu.I., Kopetskii, I.M., and Kuklin, G.V., Statistika pyatnoobrazovatel’noi deyatel’nosti Solntsa (Statistics of spot-formation activity of the Sun), Moscow: Nauka, 1986.
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Original Russian Text © A.A. Nusinov, N.M. Rudneva, E.A. Ginzburg, L.A. Dremukhina, 2015, published in Geomagnetizm i Aeronomiya, 2015, Vol. 55, No. 4, pp. 511–516.
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Nusinov, A.A., Rudneva, N.M., Ginzburg, E.A. et al. Seasonal variations in statistical distributions of geomagnetic activity indices. Geomagn. Aeron. 55, 493–498 (2015). https://doi.org/10.1134/S0016793215040106
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DOI: https://doi.org/10.1134/S0016793215040106