Kuznetsov A P, Dando R, Shmelev I P, Demidov A M, Efimov B V, Shubko V M
Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia.
Izv Akad Nauk Ser Biol. 1998 Jul-Aug(4):520-8.
The contents and distribution of natural (214Pb, 214Bi, 228Ac, and 208Tl) and technogenic (90Sr, 137Cs, and 60Co) radionuclides in the Kara Sea bottom sediments was analyzed by using the materials collected by R/V "Pomor" (Murmansk Marine Biological Institute). In 1994, no high (critical) concentrations of technogenic radioisotopes were found in the sea sediments, while the spots (regions) of elevated 137Cs content found in 1984 were not confirmed in 1994. It was proposed that the main sources of entry of technogenic radionuclides in the sea sediments in the last years are the flow of the Ob'-Yenisei waters and container burials of radioactive waste in the sea, which appeared to have been markedly corroded. The latter is confirmed by detection in some places of 60Co, which was not previously found in the sediments.
利用“波莫尔”号科研船（摩尔曼斯克海洋生物研究所）采集的材料，分析了喀拉海底沉积物中天然放射性核素（214Pb、214Bi、228Ac和208Tl）和人工放射性核素（90Sr、137Cs和60Co）的含量及分布情况。1994年，在海洋沉积物中未发现高（临界）浓度的人工放射性同位素，而1984年发现的137Cs含量升高的区域（地点）在1994年未得到证实。有人提出，近年来人工放射性核素进入海洋沉积物的主要来源是鄂毕河-叶尼塞河的水流以及海上放射性废物的集装箱掩埋，这些集装箱似乎已被显著腐蚀。在一些地方检测到沉积物中以前未发现的60Co，证实了后者。
