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首页> 外文期刊>Environmental Science & Technology >Assessment of Dry and Wet Atmospheric Deposits of Radioactive Aerosols: Application to Fukushima Radiocaesium Fallout
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Assessment of Dry and Wet Atmospheric Deposits of Radioactive Aerosols: Application to Fukushima Radiocaesium Fallout

机译：放射性气溶胶干，湿大气沉积物的评估：在福岛放射性铯沉积物中的应用

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摘要

The Fukushima Dai-ichi nuclear accident led to massive atmospheric deposition of radioactive substances onto the land surfaces. The spatial distribution of deposits has been estimated by Japanese authorities for gamma-emitting radionuclides through either airborne monitoring surveys (since April 2011) or in situ gamma-ray spectrometry of bare soil areas (since summer 2011). We demonstrate that significant differences exist between the two surveys for radiocaesium isotopes and that these differences can be related to dry deposits through the use of physically based relationships involving aerosol deposition velocities. The methodology, which has been applied to cesium-134 and cesium-137 deposits within 80-km of the nuclear site, provides reasonable spatial estimations of dry and wet deposits that are discussed and compared to atmospheric numerical simulations from the Japanese Atomic Energy Agency and the French Institute of Radioprotection and Nuclear Safety. As a complementary approach to numerical simulations, this field-based analysis has the possibility to contribute information that can be applied to the understanding and assessment of dose impacts to human populations and the environment around Fukushima.
机译：福岛第一核电站事故导致大气中大量放射性物质沉积到陆地表面。日本当局已通过机载监测调查（自2011年4月起）或裸露土壤区域的原位伽马射线光谱法（自2011年夏以来）估算了日本当局对伽马发射放射性核素的沉积物空间分布。我们证明，放射性铯同位素的两次调查之间存在显着差异，并且这些差异可以通过使用涉及气溶胶沉积速度的基于物理的关系与干沉积物相关。该方法已应用于核电站80公里范围内的铯134和铯137沉积物，提供了合理的干，湿矿床空间估算方法，这些方法已进行了讨论并与日本原子能机构和日本原子能机构进行的大气数值模拟进行了比较。法国放射防护与核安全研究所。作为数值模拟的一种补充方法，这种基于现场的分析有可能提供可用于理解和评估剂量对福岛周围人口和环境影响的信息。

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  • 来源
    《Environmental Science & Technology》 |2014年第19期|11268-11276|共9页
  • 作者

    Marc-Andre Gonze; Philippe Renaud; Irene Korsakissok; Hiroaki Kato; Thomas G. Hinton; Christophe Mourlon; Marie Simon-Cornu;

  • 作者单位

    Institute for Radiological Protection and Nuclear Safety (IRSN), Environmental Research Division, BP 3-13115 St-Paul-lez-Durance Cedex, France;

    Institute for Radiological Protection and Nuclear Safety (IRSN), Environmental Research Division, BP 3-13115 St-Paul-lez-Durance Cedex, France;

    Institute for Radiological Protection and Nuclear Safety (IRSN), Nuclear & Radiological Emergency Division, BP 17-92262 Fontenay-aux-Roses Cedex, France;

    Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki Japan;

    Institute for Radiological Protection and Nuclear Safety (IRSN), Environmental Research Division, BP 3-13115 St-Paul-lez-Durance Cedex, France;

    Institute for Radiological Protection and Nuclear Safety (IRSN), Environmental Research Division, BP 3-13115 St-Paul-lez-Durance Cedex, France;

    Institute for Radiological Protection and Nuclear Safety (IRSN), Environmental Research Division, BP 3-13115 St-Paul-lez-Durance Cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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