| 张景国,张雨,周文珊,等.极地与非极地航线航空机组人员职业照射水平比较研究[J].中华放射医学与防护杂志,2026,46(2):135-141.Zhang Jingguo,Zhang Yu,Zhou Wenshan,et al.A comparative study on effective dose to aircrew from cosmic radiation on polar and non-polar routes[J].Chin J Radiol Med Prot,2026,46(2):135-141 |
| 极地与非极地航线航空机组人员职业照射水平比较研究 |
| A comparative study on effective dose to aircrew from cosmic radiation on polar and non-polar routes |
| 投稿时间：2025-08-12 |
| DOI：10.3760/cma.j.cn112271-20250812-00291 |
| 中文关键词: 极地航线 宇宙辐射 有效剂量 航空机组人员 |
| 英文关键词:Polar routes Cosmic radiation Effective dose Aircrew |
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| 中文摘要: |
| 目的 基于CARI-7A计算程序,比较同一国际航线在经极地与不经极地航路下航空机组人员职业照射水平差异,评估极地航线对辐射暴露水平的影响,为航线规划及机组人员辐射防护提供科学依据。方法 通过flightaware网站筛选26对往返航线(共156个航班),每对航线中一程为极地航线(穿越北纬78°以上),另一程为非极地航线,涵盖2014年4月、2017年2月和2019年12月3个太阳活动水平。采用CARI-7A计算各航班航空机组人员所受有效剂量,并收集航班飞行时间、平均巡航高度、太阳射电流量指数(F10.7)和地磁活动指数(Kp)。构建线性混合效应模型,以"是否为极地航线"为主要固定效应,其余因素为协变量,航班编号为随机效应,评估极地航线对航空机组人员所受有效剂量的影响。结果 极地航线航空机组人员所受有效剂量为(61.43±20.18)μSv,高于非极地航线的(47.94±14.90)μSv。模型分析显示,在控制协变量后,极地航线航空机组人员所受有效剂量高于非极地航线(β = 9.61,P < 0.05)。模型边际决定系数R2与条件决定系数R2均为0.99。结论 极地航线显著增加航空机组人员宇宙辐射暴露水平,纬度是重要影响因素。本研究的结果可为航空公司在航线规划与风险评估中提供参考。 |
| 英文摘要: |
| Objective To compare the levels of occupational radiation exposure of aircrew between polar and non-polar routes on the same international route based on the CARI-7A calculation program and assess the impact of polar routes on radiation exposure levels, in orcler to provide a scientific basis for route planning and radiation protection of aircrews. Methods Through the flightaware website, 26 pairs of round-trip routes (a total of 156 flights) were selected. Each pair of routes included one polar route (crossing above 78°N latitude) and one non-polar route, covering three solar activity levels in April 2014, February 2017, and December 2019. The effective dose received by the aircrew of each flight was calculated using CARI-7A. Additionally, the data were collected on flight duration, average cruise altitude, solar radio flux index (F10.7), and geomagnetic activity index (Kp). A linear mixed-effect model was constructed with a polar or non-polar route as the main fixed effect, the other factors as covariates, and flight number as the random effect, so as to assess the impact of polar route on the effective dose received by aircrew. Results The effective dose received by the aircrew on polar routes was estimated to be (61.43 ± 20.18) μSv, higher than that on non-polar routes (47.94 ± 14.90) μSv. Model analysis showed that, after controlling covariates, the effective dose received by the aircrew on polar routes was higher than that on non-polar routes (β=9.61, P<0.05). The marginal determination coefficient R2 and the conditional determination coefficient R2 of the model were both 0.99. Conclusions Polar routes significantly elevated the level of cosmic radiation exposure of aircrew, on which latitude has an important impact. The result of this study is aimed to provide a reference for airlines to carry out route planning and risk assessment. |
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