Bondar Yu I, Navumau A D, Nikitin A N, Brown J, Dowdall M
Polessie State Radiation-Ecological Reserve, Khoiniki, Belarus.
Institute of the Radiobiology of the National Academy of Sciences of Belarus, Gomel, Belarus.
J Environ Radioact. 2014 Dec;138:170-6. doi: 10.1016/j.jenvrad.2014.08.018. Epub 2014 Sep 19.
Forest fires and wild fires are recognized as a possible cause of resuspension and redistribution of radioactive substances when occurring on lands contaminated with such materials, and as such are a matter of concern within the regions of Belarus and the Ukraine which were contaminated by the Chernobyl accident in 1986. Modelling the effects of such fires on radioactive contaminants is a complex matter given the number of variables involved. In this paper, a probabilistic model was developed using empirical data drawn from the Polessie State Radiation-Ecological Reserve (PSRER), Belarus, and the Maximum Entropy Method. Using the model, it was possible to derive estimates of the contribution of fire events to overall variability in the levels of (137)Cs and (239,240)Pu in ground air as well as estimates of the deposition of these radionuclides to specific water bodies within the contaminated areas of Belarus. Results indicate that fire events are potentially significant redistributors of radioactive contaminants within the study area and may result in additional contamination being introduced to water bodies.
森林火灾和野火被认为是在受此类物质污染的土地上发生时，放射性物质重新悬浮和重新分布的一个可能原因，因此在1986年受切尔诺贝利事故污染的白俄罗斯和乌克兰地区，这是一个令人担忧的问题。鉴于涉及的变量数量众多，模拟此类火灾对放射性污染物的影响是一个复杂的问题。在本文中，利用从白俄罗斯波利西亚国家辐射生态保护区（PSRER）获取的经验数据和最大熵方法，开发了一个概率模型。利用该模型，可以得出火灾事件对地面空气中（137）铯和（239,240）钚水平总体变化的贡献估计值，以及这些放射性核素在白俄罗斯污染地区内特定水体中的沉积估计值。结果表明，火灾事件可能是研究区域内放射性污染物的重要重新分布因素，并可能导致向水体引入额外的污染。
