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首页> 外文期刊>Environmental Pollution >Dispersal of the radionuclide caesium-137 (~(137)Cs) from point sources in the Barents and Norwegian Seas and its potential contamination of the Arctic marine food chain: Coupling numerical ocean models with geographical fish distribution data
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Dispersal of the radionuclide caesium-137 (~(137)Cs) from point sources in the Barents and Norwegian Seas and its potential contamination of the Arctic marine food chain: Coupling numerical ocean models with geographical fish distribution data

机译：巴伦支海和挪威海点源中放射性核素137（〜（137）Cs）的扩散及其对北极海洋食物链的潜在污染：数值海洋模型与鱼类地理分布数据的耦合

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摘要

Dispersal of ~(137)Cs from the nuclear submarine wrecks Komsomolets and K-159, which are resting on the seabed in the Norwegian and Barents Seas, respectively, is simulated using realistic rates and hypothetical scenarios. Furthermore, spatiotemporal ~(137)Cs concentrations in Northeast Arctic cod and capelin are estimated based on survey data. The results indicate that neither continuous leakages nor pulse discharges will cause concentrations of ~(137)Cs in cod muscle or whole body capelin exceeding the intervention level of 600 Bq/kg fw. Continuous leakages from Komsomolets and K-159 and pulse discharges from Komsomolets induced negligible activity concentrations in cod and capelin. A pulse discharge of 100% of the ~(137)Cs-inventory of K-159 will, however, result in concentrations in muscle of cod of above 100 times the present levels in the eastern Barents Sea. Within three years after the release, ~(137)Cs levels above 20 Bq/kg fw in cod are no longer occurring in the Barents Sea.
机译：使用实际速率和假设情景模拟了分别位于挪威海和巴伦支海海底的核潜艇沉船Komsomolets和K-159中〜（137）Cs的扩散。此外，根据调查数据估算了东北北极鳕鱼和毛鳞鱼中的〜（137）Cs时空浓度。结果表明，连续泄漏或脉冲放电都不会导致鳕鱼肌肉或全身毛鳞鱼中〜（137）Cs的浓度超过600 Bq / kg fw的干预水平。 Komsomolets和K-159的持续泄漏以及Komsomolets的脉冲放电导致鳕鱼和毛鳞鱼中的活性浓度可忽略不计。然而，K-159〜（137）Cs清单的100％的脉冲放电将导致鳕鱼肌肉中的浓度超过巴伦支海东部目前水平的100倍以上。释放后的三年内，巴伦支海不再出现鳕鱼中〜（137）Cs高于20 Bq / kg fw的水平。

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