Abstract

Variations in the concentration of ¹³⁷Cs in lake water over 12–19 years of its migration were reproduced with the use of exponential and sorption–diffusion models in calculations. The concentrations of ¹³⁷Cs in water of the deep (Н_av > 7 m) lakes Inari and Vyalozero were decreasing with half-periods of 3.6 and 5.6 years, respectively, within which ¹³⁷Cs concentration in water decreased by half. The purification of the deep Ladoga water from ¹³⁷Cs was reproduced with the use of a two-component exponential model at half-periods T₁ and T₂, equal to 0.25 and 11 years, and the contributions of components of 0.85 and 0.15, respectively. For lakes Inari and Vyalozero, the application of the sorption–diffuse model of ¹³⁷Cs absorption by bottom sediments in the reproduction of water pollution by ¹³⁷Cs was restricted by 1987–1993 and 1987–1998, respectively, when the experimental and calculated data were in a satisfactory agreement. The reserves of ¹³⁷Cs in the water volume of lakes Inari, Vyalozero, and Ladoga in 1988 were 1.1, 1.6, and 4.3% of the deposition onto water bodies in 1986.

中文翻译：

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芬诺斯堪的亚东部切尔诺贝利137Сs的湖泊水净化繁殖

摘要

在计算过程中，使用指数和吸附扩散模型再现了湖水迁移过程中12-19年间¹³⁷ Cs浓度的变化。的浓度^137个Cs的在深的水（Н _AV > 7米）湖泊伊纳里萨米和Vyalozero分别用3.6和5.6年半周期，在其内降低¹³⁷在水中铯浓度降低了一半。使用半周期T ₁和T ₂的双组分指数模型，从¹³⁷ Cs纯化了深拉多加水。，分别等于0.25年和11年，贡献部分分别为0.85和0.15。对于湖泊伊纳里萨米和Vyalozero，的吸着漫射模型的应用¹³⁷通过在水中的污染的再现底部沉积物铯吸收^137个Cs的是由分别1987-1993和1987-1998，限制，当实验和计算的数据是达成了令人满意的协议。1988年，Inari，Vyalozero和Ladoga湖的水量中¹³⁷ Cs的储量分别为1986年沉积在水体上的1.1％，1.6％和4.3％。