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  1. Article

    Open Access

    Automatic selection of Dst storms and their seasonal variations in two versions of Dst in 50 years

    A computer program is developed to automatically identify the geomagnetic storms in Dst index by applying four selection criteria that minimize non-storm-like fluctuations. The program is used to identify the ...

    N. Balan, S. Tulasiram, Y. Kamide, I. S. Batista, J. R. Souza… in Earth, Planets and Space (2017)

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  2. Article

    Open Access

    Introduction to the special issue on history development of solar terrestrial sciences including auroral sub-storms

    Solar terrestrial (ST) sciences started centuries ago and branched into different disciplines. Starting with naked eye to highly sophisticated novel experimental techniques, observations have revealed the secr...

    N. Balan, G. Parks, L. Svalgaard, Y. Kamide, T. Lui in Geoscience Letters (2016)

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  3. Article

    Open Access

    The importance of ground magnetic data in specifying the state of magnetosphere–ionosphere coupling: a personal view

    In the history of geomagnetism, geoelectricity and space science including solar terrestrial physics, ground magnetic records have been demonstrated to be a powerful tool for monitoring the levels of overall g...

    Y. Kamide, Nanan Balan in Geoscience Letters (2016)

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  4. Article

    Auroral electrojet oval

    The auroral electrojet is enhanced in the polar ionosphere associated with charged particle precipitation and field-aligned currents during substorms. In this paper the geometry of the elctrojet is determined ...

    Geng-**ong Chen, Wen-Yao Xu, Zi-Gang Wei, B. H. Ahn, Y. Kamide in Earth, Planets and Space (2003)

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  5. No Access

    Chapter

    Real-Time Specifications of the Geospace Environment

    We report the recent progress in our joint program of real-time map** of ionospheric electric fields and currents and field-aligned currents through the Geospace Environment Data Analysis System (GEDAS) at t...

    Y. Kamide, E. A. Kihn, A. J. Ridley, E. W. Cliver… in Advances in Space Environment Research (2003)

  6. No Access

    Article

    The size of the auroral belt during magnetic storms

    Using the auroral boundary index derived from DMSP electron precipitation data and the Dst index, changes in the size of the auroral belt during magnetic storms are studied. It is found that the equatorward bound...

    N. Yokoyama, Y. Kamide, H. Miyaoka in Annales Geophysicae (1998)

  7. No Access

    Article

    The convection electrojet and the substorm electrojet

    Enhancements in the auroral electrojets associated with magnetospheric substorms result from those in either the electric field or the ionospheric conductivities, or both. Their relative importance varies sign...

    Y. Kamide, R. Nakamura in Annales Geophysicae (1996)