Dispersal of the radionuclide caesium-137 (Cs-137) 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

作者：Heldal Hilde Elise^*; Vikebo Frode; Johansen Geir Odd

来源：Environmental Pollution, 2012, 164: 1-10.

DOI：10.1016/j.envpol.2012.01.006

• Nuclear submarine wrecks
• Radioactive contamination
• Northeast Arctic cod
• Capelin
• Ocean model

Dispersal of Cs-137 from Komsomolets and K-159 is simulated using realistic rates and hypothetical scenarios. Furthermore, spatiotemporal Cs-137 concentrations in Northeast Arctic cod and capelin are estimated based on survey data. The results indicate that only pulse discharges from K-159 will cause concentrations of Cs-137 in cod muscle exceeding the intervention level of 600 Bq/kg fresh weight. A discharge of >= 10% of the Cs-137-inventory will result in concentrations in muscle of cod exceeding the intervention level for approximately two years. In fact, a discharge of 10% of the Cs-137-inventory results in an overlap of 8-30% between the different size groups of cod and levels that exceed the intervention level during the first year after the discharge. For capelin, individuals less than one year old during the first year after a discharge are more likely to be severely affected by discharges comprising >= 50% of the inventory.

• 出版日期2012-5