Distribution of Dose-Rates and Deposition of Radioactive Cesium by the Airborne Monitoring Surveys
Distribution of Dose-Rates and Deposition of Radioactive Cesium by the Airborne Monitoring Surveys
复制标题
机载监测调查的放射性铯剂量率分布和沉积
DOI：
10.3327/jaesjb.54.3_160
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Kei Tanaka
中科院分区：
文献类型：
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作者：
T. Torii;Y. Sanada;T. Sugita;Kei Tanaka
为了调查东京电力公司的福岛第一核电站事故导致的放射性铯排放到大气中并沉积到地表的影响，在日本东部地区进行了大范围的航空辐射监测（以下简称航空监测）。空中监测的一个优点是，它通过快速测量从城市地区到山林的广泛范围内的伽马射线，提供了基于“表面”的对空气剂量率和放射性铯沉积量分布的了解，并且数据在视觉上易于理解。通过这次空中监测，除了日本东部各地区放射性铯的空间剂量率和沉积量分布外，我们还了解了日本东部天然核素的空气剂量率分布，对此迄今没有详细的测量结果。本文概述了日本东部地区广泛的空气监测结果以及今后面临的问题。
To survey the impact of radioactive cesium emitted into the atmosphere and deposited into the ground surface as a result of the accident at the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant, wide-range radiation monitoring via aircraft (hereinafter, airborne monitoring) was conducted in eastern Japan. An advantage of airborne monitoring is that it provides a “surface”-based understanding of air dose rates and deposition amount distributions of radioactive cesium by rapidly measuring gamma rays across a wide range, from urban areas to mountain forests, and the data are visually easy to understand. Through this airborne monitoring, in addition to the spatial dose rates and distribution of deposition amounts of radioactive cesium in each area of eastern Japan, we also gained an understanding of the air dose rate distribution of natural nuclides in eastern Japan, for which there have been no detailed measurement results until now. An overview of the wide range of airborne monitoring results in eastern Japan and the issues faced moving forward are explained herein.