Highlights ► We describe the ionospheric effects due to particles precipitation over the SAMA region. ► Correlation analysis was performed between the maximum CNA and the energetic particles fluxes. ► Different particles with different energy range precipitate in the SAMA region during the geomagnetic storm.

    Abstract The cosmic noise absorption is presented in terms of two-dimensional images obtained from the imaging riometers operated at the Southern Space Observatory (geographic coordinate: 29.4°S, 53.1°W), in São Martinho da Serra, Brazil, Concepcion (geographic coordinate: 36.5°S, 73.0°W) and Punta Arenas (geographic coordinate: 53.0°S, 70.5°W) in Chile, which belong to the South American Riometer Network and are located at the central and periphery regions of the South American Magnetic Anomaly. Correlations are performed between the maximum cosmic noise absorption observed at these stations and the energetic electron flux in two energy channels (>30 and >300keV) and the proton flux in three energy channels (80–240, 800–2500 and >6900keV) as measured by the Medium Energy Proton and Electron Detector, during a moderate geomagnetic storm that occurred on September 3, 2008. The results show high correlations between the cosmic noise absorption detected at São Martinho da Serra and the flux of protons with energy between 80 and 240keV, and the flux of electrons with energies higher than 300keV, while an additional ionization at Concepcion was correlated with electrons of energies higher than 30keV. The cosmic noise absorption detected at Punta Arenas was probably caused by the increase of the protons flux with energy between 80 and 240keV.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Correlation between the cosmic noise absorption calculated from the SARINET data and the energetic particles measured by MEPED: Simultaneous observations over SAMA region


    Beteiligte:
    Moro, J. (Autor:in) / Denardini, C.M. (Autor:in) / Abdu, M.A. (Autor:in) / Correia, E. (Autor:in) / Schuch, N.J. (Autor:in) / Makita, K. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 51 , 9 ; 1692-1700


    Erscheinungsdatum :

    2012-11-28


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch