[Radionuclides 90Sr and 137Cs in the benthos near the nuclear submarine "Komsomolets"].

We have analyzed the content of radionuclides 90Sr and 137Cs in the benthofauna and deposits near the nuclear submarine "Komsomolets." Analysis was performed on the basis of the materials of the 31st (1993) and 36th (1995) voyages of R/V "Akademik Mstislav Keldysh" in correspondence with the system of monitoring the state of the abiotic and biotic situation near the nuclear submarine "Komsomolets" (Norwegian Sea). Whereas during the 33rd voyage of this vessel (1994) the content of these elements in the benthic animals at stations located close to the submarine somewhat exceeded the background level of radioactivity (Kuznetsov et al.

[Radionuclides in the Kara sea bottom sediments].

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.

[Radionuclides in the benthofauna in the region of the location of the Komsomolets atomic submarine (the Norwegian Sea)].

Analysis of the content of radionuclides 137Cs and 90Sr in the benthofauna was carried out in the region of location of the nuclear submarine Komsomolets according to the materials of the 33rd voyage of RV Akademik Mstislav Keldysh (1994). No significant excess of the technogenic activity over the natural radioactivity was found in all ecological (trophic) groups of bottom animals. At the same time the content of 90Sr in the fauna of stations closer to the submarine was higher than at more remote stations.