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North-south asymmetry of the substorm intensity depending on the IMF B Y -component

Earth, Planets and Space volume 54, pages 955–961 (2002)Cite this article

Abstract

The dependence of maximum variations of H-component negative bays at magnetic conjugate stations on a sign of the IMF B Y -component during the substorms of small and moderate intensity with |ΔH|max < 750 nT developed at B Z < 0 and |B Z / B Y | < 1 has been studied. By data from Kotzebue (Φ = 64.5°; Λ = 249.7°) and Macquarie Isl. (Φ = −64.5°; Λ = 247.8°) observatories in the eastern hemisphere and Leirvogur (Φ = 65.3°; Λ = 68.2°) and Syowa (Φ = −66.1°; Λ = 71.0°) stations in the western hemisphere it is shown that at B Y < 0 the absolute values of negative bays |ΔH|max are greater in the southern hemisphere and at B Y > 0, on the contrary, in the northern hemisphere.

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Authors and Affiliations

  1. Institute of Cosmophysical Research and Aeronomy, 677891, Yakutsk, Russia

    V. A. Velichko, R. N. Boroyev, M. G. Gelberg & D. G. Baishev

  2. Yakutsk State Engineering and Technical Institute, 677009, Yakutsk, Russia

    R. N. Boroyev & M. G. Gelberg

  3. Department of Earth and Planetary Sciences, Kyushu University, 33, Hakozaki, Fukuoka, 812-8581, Japan

    D. G. Baishev & K. Yumoto

  4. Geophysical Institute, University of Alaska, Fairbanks, Alaska, 99775-7320, USA

    J. V. Olson

  5. Australian Antarctic Division, Kingston, Tasmania, 7050, Australia

    R. J. Morris

Authors
  1. V. A. Velichko
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  2. R. N. Boroyev
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  3. M. G. Gelberg
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  4. D. G. Baishev
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  5. J. V. Olson
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  6. R. J. Morris
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  7. K. Yumoto
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Correspondence to V. A. Velichko.

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Velichko, V.A., Boroyev, R.N., Gelberg, M.G. et al. North-south asymmetry of the substorm intensity depending on the IMF B Y -component. Earth Planet Sp 54, 955–961 (2002). https://doi.org/10.1186/BF03352443

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  • DOI: https://doi.org/10.1186/BF03352443

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