Mesoscale modelling of radioactive contamination formation in Ukraine caused by the Chernobyl accident
Mesoscale modelling of radioactive contamination formation in Ukraine caused by the Chernobyl accident
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DOI：
10.1016/j.jenvrad.2004.04.008
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发表时间：
2005-01-01
影响因子：
2.3
通讯作者：
Talerko, N
中科院分区：
文献类型：
--
作者：
Talerko, N
这项工作致力于利用大气输运LEDI模型（拉格朗日-欧拉扩散模型）重建切尔诺贝利事故初期乌克兰境内随时间变化的放射性污染场。建模结果与现有的Cs-137空气和周围污染测量数据进行了比较。在事故发生后的头12天（1986年4月26日至5月7日），利用实际气象资料和雨量测量网数据模拟了乌克兰境内的Cs-137大气输送。切尔诺贝利核电站事故单元释放的详细情景已经建立（包括随时间变化的放射性释放强度和释放高度）。这些计算使我们能够解释乌克兰境内放射性污染场在区域范围内的时空变化的主要特点。包括由干湿沉降引起的大型放射性污染斑的形成。(C) 2004 Elsevier Ltd.版权所有。
This work is devoted to the reconstruction of time-dependent radioactive contamination fields in the territory of Ukraine in the initial period of the Chernobyl accident using the model of atmospheric transport LEDI (Lagrangian-Eulefian Diffusion model). The modelling results were compared with available Cs-137 air and around contamination measurement data. The Cs-137 atmospheric transport over the territory of Ukraine v.-as simulated during the first 12 days after the accident (from 26 April to 7 May 1986) using real aerological information and rain measurement network data. The detailed scenario of the release from the accidental unit of the Chernobyl nuclear plant has been built (including time-dependent radioactivity release intensity and time-varied height of the release). The calculations have enabled to explain the main features of spatial and temporal variations of radioactive contamination fields over the territory of Ukraine on the regional scale. including the Formation of the major large-scale spots of radioactive contamination caused by dry and wet deposition. (C) 2004 Elsevier Ltd. All rights reserved.