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A new index to monitor temporal and long-term variations of the equatorial electrojet by MAGDAS/CPMN real-time data: EE-Index

Earth, Planets and Space volume 60, pages785–790(2008)Cite this article

Abstract

A new index, EE-index (EDst, EU, and EL), is proposed to monitor temporal and long-term variations of the equatorial electrojet by using theMAGDAS/CPMN real-time data. The mean value of the H component magnetic variations observed at the nightside (LT = 18–06) MAGDAS/CPMN stations along the magnetic equatorial region is found to show variations similar to those of Dst; we defined this quantity as EDst. The EDst can be used as a proxy of Dst for the real-time and long-term geospace monitoring. By subtracting EDst from the H component data of each equatorial station, it is possible to extract the Equatorial Electrojet and Counter Electrojet components, which are defined as EU and EL, respectively.

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Author information

Affiliations

  1. Space Environment Research Center, Kyushu University, 6-10-1 Hakozaki, Fukuoka, Japan

    T. Uozumi, K. Yumoto, S. Abe, Y. Kakinami, M. Shinohara, A. Yoshikawa & H. Kawano

  2. Tokuyama College of Technology, Gakuendai, Shunan, Yamaguchi, 745-8585, Japan

    K. Kitamura

  3. Department of Earth and Planetary Sciences, Kyushu University, 6-10-1 Hakozaki, Fukuoka, Japan

    T. Ueno & T. Tokunaga

  4. Manila Observatory, Bldg. at Ateneo de Manila University Campus, Quezon City, Philippines

    D. McNamara

  5. Observatorio de Ancón, Instituto Geofísico del Perú, Carretera Panamericana Norte Km. 43.5, Ancón, Peru

    J. K. Ishituka

  6. National Institute for Space Research (INPE), 12227-010, Sao Jose dos Campos, SP, Brazil

    S. L. G. Dutra

  7. Department of Physics, Bahir Dar University, Bahir Dar, PB 79, Ethiopia

    B. Damtie

  8. Laboratorire de Physique de l’Atmosphere, University of Cocody, BPV34, Abidijan, Cote d’Ivoire

    V. Doumbia & O. Obrou

  9. Department of Physics, Federal University of Technology, PMB 704, Akure, Ondo State, Nigeria

    A. B. Rabiu

  10. Department of Physics, University of Ilorin, Ilorin, Kwara State, Nigeria

    I. A. Adimula

  11. National Space Agency, Ministry of Science, Technology and Innovation, 62100, Putrajaya, Malaysia

    M. Othman & M. Fairos

  12. Department of Physics, University of San Carlos, Cebu City, Philippines

    R. E. S. Otadoy

Authors
  1. T. Uozumi
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  2. K. Yumoto
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  3. K. Kitamura
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  4. S. Abe
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  5. Y. Kakinami
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  6. M. Shinohara
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  7. A. Yoshikawa
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  8. H. Kawano
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  9. T. Ueno
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  10. T. Tokunaga
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  11. D. McNamara
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  12. J. K. Ishituka
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  13. S. L. G. Dutra
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  14. B. Damtie
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  15. V. Doumbia
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  16. O. Obrou
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  17. A. B. Rabiu
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  18. I. A. Adimula
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  19. M. Othman
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  20. M. Fairos
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  21. R. E. S. Otadoy
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Consortia

MAGDAS Group

Corresponding author

Correspondence to T. Uozumi.

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Uozumi, T., Yumoto, K., Kitamura, K. et al. A new index to monitor temporal and long-term variations of the equatorial electrojet by MAGDAS/CPMN real-time data: EE-Index. Earth Planet Sp 60, 785–790 (2008). https://doi.org/10.1186/BF03352828

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Key words

  • EE-index
  • equatorial electrojet
  • counter electrojet
  • MAGDAS/CPMN
  • real-time monitoring
  • Dst index
  • space weather