1989年10月太阳高能粒子事件期间在近地轨道观测到的地磁传输扰动和重离子注量。

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

作者信息

Boberg P R, Tylka A J, Adams J H, Beahm L P, Fluckiger E O, Kleis T, Kobel E

机构信息

E.O. Hulbert Center for Space Research, Naval Research Laboratory, Washington, DC 20375-5352, USA.

出版信息

Adv Space Res. 1996;17(2):121-5. doi: 10.1016/0273-1177(95)00522-g.

DOI:10.1016/0273-1177(95)00522-g

PMID:11540358

Abstract

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 geomagnetic transmission by tracing particles through the combination of 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 degrees inclination space station orbit.

摘要

1989年10月观测到的大型太阳高能粒子（SEP）事件以及同时发生的大型地磁扰动构成了重大且迅速演变的空间辐射危害。利用来自GOES - 7、NOAA - 10、IMP - 8和LDEF卫星的数据，我们确定了这些SEP在低地球轨道（LEO）中的地磁传输、重离子注量、平均铁离子电荷态以及有效辐射危害。我们通过将粒子轨迹追踪与国际地磁参考场（IGRF）内部模型和齐甘年科（1989年）磁层场模型相结合来模拟地磁传输，并将该模型扩展到大型地磁扰动情况。我们利用研究结果评估了如此大型的SEP事件在预期的52度倾角空间站轨道中可能造成的辐射危害。