Abstract:
: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.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Yakovlev E,Puchkov Adoi
10.1016/j.marpolbul.2020.111571subject
Has Abstractpub_date
2020-11-01 00:00:00pages
111571eissn
0025-326Xissn
1879-3363pii
S0025-326X(20)30689-5journal_volume
160pub_type
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