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Geomagnetic transmission disturbances and heavy-ion fluences observed in low Earth orbit during the solar energetic particle events of October 1989The 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.
Document ID
19950057281
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Boberg, P. R.
(E.O. Hulbert Center for Space Research, Washington, DC US, United States)
Tylka, A. J.
(E.O. Hulbert Center for Space Research, Washington, DC US, United States)
Adams, J. H., Jr.
(E.O. Hulbert Center for Space Research, Washington, DC US, United States)
Beahm, L. P.
(E.O. Hulbert Center for Space Research, Washington, DC US, United States)
Fluckiger, E. O.
(Univ. Bern Bern, Switzerland)
Kleis, T.
(George Mason Univ. Fairfax, VA, US, United States)
Kobel, E.
(Univ. Bern Bern, Switzerland)
Date Acquired
August 16, 2013
Publication Date
January 1, 1996
Publication Information
Publication: Advances in Space Research
Volume: 17
Issue: 2
ISSN: 0273-1177
Subject Category
Space Radiation
Accession Number
95A88880
Funding Number(s)
CONTRACT_GRANT: NAGW-18409
Distribution Limits
Public
Copyright
Other

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