Abstract

Contamination with ⁹⁰Sr of the White Sea water in migration during 50 years is reconstructed with the use of a three-component exponential model. Т₁, Т₂, and Т₃, the periods of half-purification of White-Sea water to remove ⁹⁰Sr were 0.8, 15.4, and 29 years, respectively. During 50 years of migration, the content of ⁹⁰Sr in water decreased from 41 to 2–3 Bq/m³. The maximum decrease in the content of ⁹⁰Sr was observed in 1965–1968. The outflow of ⁹⁰Sr in 1970 from the White Sea was 37.5, and the inflow with Barents-Sea water, 25.5 TBq. The outflow was partly compensated for by the inflow of 4 TBq of ⁹⁰Sr with water of the rivers Northern Dvina, Onega, Mezen’. The White Sea water is a weak source of ⁹⁰Sr for the Barents Sea. The inflow of global ⁹⁰Sr with the river flow makes slower the replacement of the more contaminated White Sea water with the purer water of the Barents Sea. The determinations of ⁹⁰Sr in the White Sea water (1965–2015) in terms of the exponential model have been confirmed by the results of experimental observation of ⁹⁰Sr in the sea bays. During 50 years, 1.5–2 times higher concentrations of ⁹⁰Sr were preserved in the semi-closed White Sea, compared with the Barents Sea.

中文翻译：

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净化和净化白海水以去除全球90 Sr

摘要

使用三分量指数模型重建了50年来迁移过程中⁹⁰ Sr的白海水的污染。Т ₁，Т ₂，和Т ₃，白海水的半纯化的周期，以除去⁹⁰锶分别为0.8，15.4，29岁，分别。在迁移的50年中，水中⁹⁰ Sr的含量从41 Bq / m ³降至2–3 Bq / m ³。在1965-1968年观察到⁹⁰ Sr含量的最大下降。1970年从白海流出的⁹⁰ Sr量为37.5，巴伦支海水的流入量为25.5 TBq。4 TBq的流入部分补偿了流出⁹⁰ Sr用河北德维纳，奥涅加，梅曾河的水。对于巴伦支海来说，白海水是⁹⁰ Sr的弱水源。全球⁹⁰ Sr随河水的流入使得用巴伦支海的纯净水替代污染较严重的白海水的速度变慢。根据指数模型对白海海水中的⁹⁰ Sr的测定（1965-2015）已​​通过对海湾中⁹⁰ Sr的实验观察结果得到了证实。在50年中，与巴伦支海相比，半封闭的白海中保存的⁹⁰ Sr浓度高1.5-2倍。