The large solar energetic particle (SEP) events and simultaneous large geomagnetic disturbances observed during October 1989 posed a significant, rapidly evolving space radiation hazard. Using data from the GOES-7, NOAA-10, IMP-8 and LDEF satellites, we determined the geomagnetic transmission, heavy ion fluences, mean Fe ionic charge state, and effective radiation hazard observed in low Earth orbit (LEO) for these SEPs. We modeled the geomagneitc transmission by tracing particles through the combination to the internal International Geomagnetic Reference Field (IGRF) and the Tsyganenko (1989) magnetospheric field models, extending the modeling to large geomagnetic disturbances. We used our results to assess the radiation hazard such very large SEP events would pose in the anticipated 52 deg inclination space station orbit.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Geomagnetic transmission disturbances and heavy-ion fluences observed in low Earth orbit during the solar energetic particle events of October 1989


    Contributors:
    Boberg, P. R. (author) / Tylka, A. J. (author) / Adams, J. H., Jr. (author) / Beahm, L. P. (author) / Fluckiger, E. O. (author) / Kleis, T. (author) / Kobel, E. (author)

    Published in:

    Publication date :

    1996-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English