Highlights Diurnal variation in NmF2 and hmF2 at mid-latitude during a solar eclipse. The decrease in NmF2 is a consequence of the variation in the local solar radiation. The plasma movements are related to the distribution of thermospheric composition and diffusion mechanisms. Latitudinal influence on eclipse effects and time lag.

    Abstract This paper studied the effects of solar eclipse of March 20, 2015 on the F2 layer in the mid-latitude. The diurnal changes in the NmF2 and hmF2 in mid-latitude stations during the spectacular event, as recorded by the ionosonde situated along the path of solar eclipse, which are within the obscuration percentage of 59–90% were investigated. The estimation of the percentage of solar ionizing radiation that remains unmasked during the eclipse window was carried out. The high uncertainty level (i.e. the error is ⩽±0.2), indicates that variation in electron density during eclipse window can be used as proxy parameter for solar ionizing radiation. The NmF2 decreased during the eclipse window, as a consequence of the variation in the local solar radiation. The variation of F2 plasma was dominated by diffusion mechanisms which determine the height at which the F2 peak formed and were related to the changes in thermospheric composition. The downward/upward movements of the plasma correspond with the drifting of the diffusion mechanisms and undergone a comparable variation with the solar ionizing radiation. Our result indicates that eclipse effects increase with increase in latitude and the time lag (the time delay ranges from 11 to 21min) decreases with increase in latitude.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The effects of March 20 2015 solar eclipse on the F2 layer in the mid-latitude


    Beteiligte:
    Chukwuma, V.U. (Autor:in) / Adekoya, B.J. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 58 , 9 ; 1720-1731


    Erscheinungsdatum :

    2016-06-28


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    20 March 2015 solar eclipse influence on sporadic E layer

    Pezzopane, M. / Pietrella, M. / Pignalberi, A. et al. | Elsevier | 2015


    Impact and modeling of the solar eclipse effects of 20 March 2015 on VLF measurements

    Wenzel, Daniela / Berdermann, Jens / Jakowski, Norbert | Deutsches Zentrum für Luft- und Raumfahrt (DLR) | 2017

    Freier Zugriff

    The March 9, 1997 Solar Eclipse Ionospheric Effects Over the Russian Asian Region

    Kurkin, V. I. / Nosov, V. E. / Potekhin, A. P. et al. | British Library Conference Proceedings | 2001