Radiation Dose Nowcast for the Ground Level Enhancement on 10-11 September 2017
Radiation Dose Nowcast for the Ground Level Enhancement on 10-11 September 2017
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DOI：
10.1029/2018sw001874
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发表时间：
2018-07-01
影响因子：
3.7
通讯作者：
Kubo, Yuki
中科院分区：
文献类型：
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作者：
Kataoka, Ryuho;Sato, Tatsuhiko;Kubo, Yuki
2017年9月10日至11日发生了一次地面增强事件，与太阳西翼的X8.2太阳耀斑有关。我们报告的结果，我们手动进行临近预报使用预警系统航空暴露于太阳高能粒子。在12公里飞行高度的最大辐射剂量率估计约为3 μ Sv/h，不到银河宇宙射线剂量率的一半。我们还讨论了一个可能的准平行冲击加速机制，可能导致异常软的质子能谱作为地面水平增强事件。
A ground level enhancement event occurred on 10-11 September 2017, associated with an X8.2 solar flare on the western limb of the Sun. We report the results of our manually conducted nowcast using WArning System for AVIation Exposure to Solar energetic particles. The maximum radiation dose rate at a flight altitude of 12 km was estimated to be approximately 3 mu Sv/h, which is less than half of the dose rate due to galactic cosmic rays. We also discuss a possible quasi-parallel shock-acceleration mechanism that may have led to the exceptionally soft proton energy spectrum as ground level enhancement events.