Abstract
The ring current dynamics during the magnetic storm has been studied in the work. The response of the magnetospheric current systems to the external influence of the solar wind, specifically, resulting in the development of the asymmetric ring current component, has been calculated using the magnetic field paraboloid model. The asymmetric ring current has been considered as a family of spatial current circuits in the Northern and Southern hemispheres, composed of the zones of the partial ring current in the geomagnetic equator plane, which close through the system of field-aligned currents into the ionosphere. The value of the total partial ring current has been estimated by comparing the calculated asymmetry of the magnetospheric magnetic field at the geomagnetic equator with the value of the Asym-H geomagnetic index. The variations in the symmetric and asymmetric components of the ring current magnetic field have been calculated for the magnetic storm of November 6–14, 2004. The contributions of the magnetospheric current systems to the Dst and AU geomagnetic indices have been calculated.
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References
I. I. Alexeev, E. S. Belenkaya, S. Y. Bobrovnikov, and V. V. Kalegaev, “Modelling of the Electromagnetic Field in the Interplanetary Space and in the Earth’s Magnetosphere,” Space Sci. Rev. 107(1/2), 7–26 (2003).
I. I. Alexeev, E. S. Belenkaya, V. V. Kalegaev, et al., “Magnetic Storms and Magnetotail Currents,” J. Geophys. Res. 101, 7737–7747 (1996).
I. I. Alexeev, V. V. Kalegaev, E. S. Belenkaya, et al., “The Model Description of Magnetospheric Magnetic Field in the Course of Magnetic Storm on January 9–12, 1997,” J. Geophys. Res. A 106, 25683–25694 (2001).
K. Yu. Bakhmina and V. V. Kalegaev, “Modeling the Effect of the Partial Ring Current in a Disturbed Magnetosphere,” Geomagn. Aeron. 48(5), 2008.
R. K. Burton, R. L. McPherron, and C. T. Russell, “An Empirical Relationship between Interplanetary Conditions and Dst,” J. Geophys. Res. 80, 4204–4214 (1975).
C. R. Clauer, I. I. Alexeev, E. S. Belenkaya, and J. B. Baker, “Special Features of the September 24–27, 1998 Storm during High Solar Dynamic Pressure and Northward Interplanetary Magnetic Field,” J. Geophys. Res. 106, 25 695–25 711 (2001).
Y. I. Feldstein, A. I. Levitin, J. U. Kozyra, et al., “Self-Consistent Modeling of the Large-Scale Distortions in the Geomagnetic Field during the September 24–27, 1998 Major Magnetic Storm,” J. Geophys. Res. 110, A1010584 (2005).
Y. I. Feldstein, V. A. Popov, J. A. Cumnock, et al., “Auroral Electrojets and Boundaries of Plasma Domains in the Magnetosphere during Magnetically Disturbed Intervals,” Ann. Geophys. 24, 2243–2276 (2006).
M.-C. Fok, R. A. Wolf, R. W. Spiro, and T. E. Moore, “Comprehensive Computational Model of the Earth’s Ring Current,” J. Geophys. Res. 106, 8417–8424 (2001).
E. Friedrich, G. Rostoker, M. G. Connors, and R. L. McPherron, “Influence of the Substorm Current Wedge on the Dst Index,” J. Geophys. Res. 104, 4567–4575 (1999).
D. C. Hamilton, G. Gloeckler, F. M. Ipavich, et al., “Ring Current Development during the Great Magnetic Storm on February 1986,” J. Geophys. Res. 93, 14 343–14 355 (1988).
V. V. Kalegaev and E. V. Makarenkov, “Dynamics of Magnetospheric Current Systems during Magnetic Storms of Different Intensity,” Geomagn. Aeron. 46(5), 603–610 (2006) [Geomagn. Aeron. 46, 570–579 (2006)].
V. V. Kalegaev, I. I. Alexeev, E. V. Makarenkov, and N. Yu. Ganushkina, “Modeling the Dst Variation during Magnetic Storms,” Geomagn. Aeron. 46(5), 596–603 (2006) [Geomagn. Aeron. 46, 563–569 (2006)].
V. V. Kalegaev, N. Yu. Ganushkina, T. I. Pulkkinen, et al., “Relation between the Ring Current and the Tail Current during Magnetic Storms,” Ann. Geophys. 26(2), 523–533 (2005).
Y. Kamide and S. Kokubun, “Two-Component Auroral Electrojet: Importance for Substorm Studies,” J. Geophys. Res. 101, 13 027–13 046 (1996).
J. U. Kozyra and M. W. Liemohn, “Ring Current Energy Input and Decay,” Space Sci. Rev. 109, 105–131 (2003).
M. W. Liemohn and J. U. Kozyra, “Assessing the Importance of Convective and Inductive Electric Fields in Forming the Stormtime Ring Current,” in Proceedings of the Sixth International Conference on Substorms, Seattle, 2002, Ed. by R. L. Winglee, pp. 456–462.
M. W. Liemohn, J. U. Kozyra, M. F. Thomsen, et al., “Dominant Role of the Asymmetric Ring Current in Producing the Stormtime Dst,” J. Geophys. Res. 106, 10 883–10 904 (2001).
T. P. O’Brien and R. L. McPherron, “An Empirical Phase Space Analysis of Ring Current Dynamics: Solar Wind Control of Injection and Decay,” J. Geophys. Res. 105, 7707–7719 (2000).
E. C. Roelof, “Energetic Neutral Atom Image of Storm-Time Ring Current,” Geophys. Res. Lett. 14, 652–655 (1987).
J.-H. Shue, P. Song, C. T. Russel, et al., “Magnetopause Location under Extreme Solar Wind Conditions,” J. Geophys. Res. 103, 17 691–17 700 (1998).
G. V. Starkov, Planetary Morphology of Auroral Phenomena in Magnetospheric-Ionospheric Physics (Nauka, St. Petersburg, 1993), pp. 85–90 [in Russian].
M. Sugiura and T. Kamei, “Equatorial Dst Index (1957–1986), in IAGA Bull. 40,” Ed. by A. Berthelier and M. Menville (Int. Serv. Geomagn. Indices Publ. Off., Saint Maur, 1991).
N. A. Tsyganenko and M. I. Sitnov, “Modeling the Dynamics of the Inner Magnetosphere during Strong Geomagnetic Storms,” J. Geophys. Res. 110, A010798 (2005).
J. M. Weygand and R. L. McPherron, “Dependence of Ring Current Asymmetry on Storm Phase,” J. Geophys. Res. 111, A011808 (2006).
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Original Russian Text © V.V. Kalegaev, K.Yu. Bakhmina, I.I. Alexeev, E.S. Belenkaya, Ya.I. Feldstein, N.V. Ganushkina, 2008, published in Geomagnetizm i Aeronomiya, 2008, Vol. 48, No. 6, pp. 780–792.
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Kalegaev, V.V., Bakhmina, K.Y., Alexeev, I.I. et al. Ring current asymmetry during a magnetic storm. Geomagn. Aeron. 48, 747–758 (2008). https://doi.org/10.1134/S0016793208060078
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DOI: https://doi.org/10.1134/S0016793208060078