Abstract As a new index characterizing the diurnal variation of foF2 the half difference between daily maximum and minimum values AfoF2 is introduced. Deviations of more than 20% from the running average are characterized as disturbances distinguishing positive and negative deviations. This index applied to the data of many ionospheric stations during two solar activity minima (1963 through 1965 and 1985 through 1987) showed its sensitivity to regional disturbances as well as a clear difference between the two periods in relation to the number of “disturbed days”.


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    Titel :

    Spatial and temporal variability of the ionosphere during solar minima


    Beteiligte:
    Gulyaeva, T.L. (Autor:in) / Mosert de González, M. (Autor:in) / Radicella, S.M. (Autor:in) / Zolezi, B. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1990


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Tables to “spatial and temporal variability of the ionosphere during solar minima”

    Gulyaeva, T.L. / Mosert de González, M. / Radicella, S.M. et al. | Elsevier | 1990


    Delayed response of the ionosphere to solar EUV variability

    Schmölter, Erik / Berdermann, Jens / Jakowski, Norbert et al. | Deutsches Zentrum für Luft- und Raumfahrt (DLR) | 2018

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