The article is devoted to the study of the activity values of natural radionuclides ⁴⁰K, ²³²Th and ²²⁶Ra and technogenic radionuclide ¹³⁷Cs in the bottom sediments of the Barents Sea, which is distinguished from the rest of the Arctic seas by the fact that the largest number of radiation objects are concentrated here. The activity levels of natural radionuclides were within the range of activity values corresponding to marine sediments around the world. The highest radionuclide activities were found within the deepwater shelf of the Barents Sea. The current level of activity of the technogenic radionuclide ¹³⁷Cs is low and does not exceed 6.5 Bq·kg⁻¹. However, due to global climatic changes, the secondary source of radiation pollution of the sea may be the Novaya Zemlya ice sheet, in which huge quantities of technogenic radionuclides were deposited during atmospheric tests of the 1950s and 1960s.

本文致力于研究巴伦支海底沉积物中天然放射性核素⁴⁰ K，²³² Th和²²⁶ Ra和放射性核素¹³⁷ Cs的活度值，该活性值与北极其他海域的区别在于最大数量的辐射物体集中在此处。天然放射性核素的活动水平在与世界各地海洋沉积物相对应的活动值范围内。在巴伦支海的深水架内发现了最高的放射性核素活度。放射性核素¹³⁷ Cs的当前活性水平较低，并且不超过6.5 Bq·kg ^-1。但是，由于全球气候变化，海洋辐射污染的次要来源可能是Novaya Zemlya冰盖，在1950年代和1960年代的大气试验中，大量的技术放射性核素沉积在其中。