Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....8.3396p&link_type=abstract
Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int
Physics
Scientific paper
The primary solar proton parameters outside the magnetosphere may be obtained by an optimization procedure utilizing the ground level enhancement (GLE) effect on the neutron monitor network as well as proton trajectory calculations in a model geomagnetic field. The critical point here is validity of a given magnetospheric model under disturbed conditions. The paper considers the GLE of 7-8 December, 1982 occurred during magnetically disturbed period (DST -90nT). The responses of different neutron monitors and solar proton parameters have been modeled using the Tsyganenko 89 (T89) and Ostapenko-Maltsev-97 (OM-97) models. The latter was specially developed for great negative DST values (J.Geophys.Res.102, 17467, 1997). The results of calculations have been compared to reveal the effect of DST causing disturbance on the solar proton trajectories and the modeled count rate enhancement effect for ground based neutron monitors at different local times.
Pchelkin V. V.
Vashenyuk Eduard V.
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