Abstract The relations between electric fields in the daytime and nighttime sectors of the polar ionosphere and magnetic activity indices of auroral region (AL) and northern polar cap (PCN) are studied. It is found that the above relations do exist and are described by: a) equations Upc(1) (kV) = 27.62 + 21.43PCN with a correlation coefficient R = 0.87 and Upc(1) (kV) = 4.06 + 49.21PCN - 6.24 $ PCN^{2} $ between the difference in the electric potentials across the polar cap in the daytime sector Upc(1) and PCN and b) regression equation Upc(2) (kV) = 23.33 + 0.08|AL| with R = 0.86 between the difference in the electric potentials across the polar cap in the nighttime sector Upc(2) and |AL|. It is shown that: a) it is possible to use the AL and PCN indices for real-time diagnostics of instantaneous values of the electric fields in the daytime and nighttime sectors of the polar ionosphere in the process of a substorm development; b) at the expansion phase of a substorm, due to calibration of PCN values by the values of the solar wind electric field Esw, the PCN index does not feel the contribution of the western electrojet and, accordingly, the contribution of the nighttime ionospheric electric field Upc(2), governed by the reconnection in the magnetospheric tail.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Relationship between ionospheric electric fields and magnetic activity indices


    Contributors:

    Published in:

    Publication date :

    2012




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.60 Raumfahrttechnik / 39.00 Astronomie: Allgemeines / 50.93 Weltraumforschung
    Local classification TIB:    770/3520/8000




    On the relationship between ionospheric characteristics and solar indices

    Ortiz de Adler, N. / Ezquer, R.G. / Manzano, J.R. | Elsevier | 1993



    On the planetary ionospheric vortex electric fields

    Aburjania, G.D. / Alperovich, L.S. / Khantadze, A.G. et al. | Elsevier | 2007


    On the planetary ionospheric vortex electric fields

    Aburjania, G.D. | Online Contents | 2008