Abstract
90Sr and137Cs concentrations and their vertical distributions were determined in deep waters in the western Northwest Pacific, including the adjacent seas of Japan, from 1976 to 1979.
The profiles of the radionuclides show distribution patterns with two parts with an exponential variation of radioisotope content with depth in both parts.
Generally speaking, the inventories of90Sr and137Cs in the open waters of the northwestern Pacific correspond fairly well to the fallout inputs, but in some circumstances there seems to be considerable removal of radionuclides from the water column or they are diluted with water of lower radioactivity from other regions.
The possibility of radioisotope remobilization from the bottom sediment or particulate matter is also discussed.
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Baranov, V.I., V.M. Vdovenko, L.I. Gedeonov, L.M. Ivanova, A.G. Kolesnikov, S.A. Patin, N.I. Popov, L.M. Khitrov andP.M. Chulkov (1965): Contamination of oceans by long-lived radionuclides according to the results of USSR investigations. Proc. 3rd. Intern. Conf. Peace. Use Atom. Energ.,14, 72–82.
Biscaye, P.E. andS.L. Eittreim (1977) Suspended particulate loads and transports in the nepheloid layer of the abyssal Atlantic Ocean. Marine Geology,23, 155–172.
Bowen, V.T., V.E. Noshkin, H.L. Volchok, H.D. Livingston andK.M. Wong (1974): Cesium-137 to Sr-90 ratios in the Atlantic Ocean. Limnol. Oceanogr.,19, 670–681.
Bowen, V.T., V.E. Noshkin, H.D. Livingston andH.L. Volchok (1980): Fallout radionuclides in the Pacific Ocean: Vertical and horizontal distributions, largely from GEOSEC stations. Earth Planet. Sci. Lett.,48, 411–434.
Environmental Measurement Laboratory (1972): HASL-300, EML Procedure Manual, ed. byJ H. Harley, US Dept. Energ., New York.
Folsom, T.R., G.J. Mohanrao, K.C. Pillai andC. Sreekmaran (1968): Distribution of137Cs in the Pacific HASL-197, Part 1. USAEC, New York, 95–203.
Honjo, S. (1980): Material fluxes and modes of sedimentation in the mesopelagic and bathypelagic zones. J. Mar. Res.,38, 53–97.
Honjo, S. andM.R. Roman 1978: Marine copepod fecal pellets: Production, preservation and sedimentation. J. Mar. Res.,36, 45–57.
Horibe, Y., E. Taira, T. Teramoto, H. Tsubota, S. Imawaki, Y. Kodama andH. Igarashi (1977): Development and recovery of moored arrays of instruments, large-volume sampler, auto-analyzer.In Environmental Marine Sciences, ed byHoribe, Y., Univ. Tokyo Press, Tokyo, 184–208. (in Japanese)
Iseki, K. (1981): Vertical transport of particulate organic matter in the deep Bering Sea and Gulf of Alaska. J. Oceanogr. Soc. Japan.37, 101–110.
Katsuragi, Y. (1978): Cs-137 and Sr-90 deposition in Japan. Abstracts of Papers presented at the 20th Meeting on the Environmental Radioactivity Survey in Japan, National Institute of Radiological Sciences, Chiba, 12–17. (in Japanese)
Kupferman, S. L., H. D. Livingston andV. T. Bowen (1979): A mass balance for107Cs and90Sr in the North Atlantic Ocean. J. Mar. Res.,37, 157–199.
Martin, J.H. (1970): The possible transport of trace metals via moulted copepod exoskeletons. Limnol. Oceanogr.,15, 756–761.
Miyake, Y. andK. Saruhashi 1960. Vertical and horizontal mixing rates of radioactive material in the ocean. Report of the Scientific Conference on the Disposal of Radioactive Waste, IAEA & UNESCO, 1959, Monaco, 167–173.
Miyake, Y., K. Saruhashi, Y. Katsuragi andT. Kanazawa (1962): Penetration of Sr-90 and Cs-137 in deep layers of the Pacific and vertical diffusion rate of deep Water. J. Radiat. Res.,3, 141–147.
Nagaya, Y., M. Shiozaki andY. Seto (1965): Some fallout radionuclides in deep waters around Japan. J. Radiat. Res.,6, 23–31.
Nagaya, Y. andM. Saiki (1967): Accumulation of radionuclides in coastal sediment of Japan D. Fallout radionuclides in some coastal sediments in 1964–1965. J. Radiat. Res.,8, 37–43.
Nagaya, Y. andK. Nakamuka (1970): A study on the vertical transport of90Sr and137Cs in the surface waters of the seas around Japan. J. Radiat. Res.,11, 32–43.
Nagaya, Y. andK. Nakamura (1974): A field study of physicochemical states of artificial radionuclides in sea water. J. Oceanogr. Soc. Japan,30, 179–184.
Nagaya, Y. andK. Nakamura (1976):90Sr and137Cs contents in the surface waters of the adjacent seas of Japan and the North Pacific during 1969 to 1973. J. Oceanogr. Soc. Japan,32, 228–234.
Nakamura, K. andY. Nagaya (1975): Accumulation of radionuclides in coastal sediment of Japan (II). Contents of fission products in some coastal sediments collected in 1966–1972. J. Radiat. Res.,16, 184–192.
Noshkin, V.E. andV.T. Bowen (1973): Concentrations and distributions of long-lived fallout radionuclides in open ocean sediments.In Radioactive Contamination of the Marine Environment (Proc. Symp. Seattle, 1972), International Atomic Energy Agency, Vienna, 671–686.
Popov, N.J., V.M. Orlov andV.A. Pchelin (1963): Sr-90 in the waters of the Pacific Ocean. I. Western part and adjacent seas. Okeanologiya,3, 666–668. (in Russian)
Saruhashi, K., Y. Katsuragi, T. Kanazawa, Y. Sugimura andY. Miyake (1975):90Sr and137Cs in the Pacific waters. Rec. Oceanogr. Wks. Japan,13, 1–15.
Shiozaki, M., K. Oda, T. Kimura andY. Seto (1972): The artificial radioactivity in sea water.In Researches in Hydrography and Ocenaography (Commemoration Pub. of the Centenary of the Hydrographic Dept. of Japan), Tokyo, 203–249.
Shirasawa, T.H., andE.A. Schuert (1968): Fall-out radioactivity in the North Pacific Ocean: Data complication of80Sr and137Cs concentrations in sea water. HASL-197, Part, USAEC, New York, 67–92.
Spencer, D.W., P.G. Brewer, A. Fleer, S. Honjo, S. Krishnaswami andY. Nozaki (1978): Chemical fluxes from a sediment trap experiment in the deep Sargasso Sea. J. Mar. Res.,36, 493–523.
Strelow, F.M., C.J. Liebenberg andF. von S. Toerien (1968): Quantitative separation of alkali metals by cation exchange chromatography with BIO-REX 40 resin. Anal. Chim. Acta,43, 465–473.
United Nations Scientific Comittee on the Effects of Atomic Radiation (1977): Radioactive contamination due to nuclear explosions.In Sources and Effects of Ionizing Radiation, 1977 Report, UN, New York, 165–222.
Volchok, H.L., V.T. Bowen, T.R. Folsom, W.S. Broecker, E.A. Schuert andG.S. Bien (1971): Oceanic distribution of radionuclides from nuclear explosions.In Radioactivity in Marine Environment, ed bySeymour, A.H., National Acadeny of Sciences, Wash., 42–89.
Wiebe, P.H., S.T. Boyd andC. Winget (1976): Particulate matter sinking to the deep-sea floor at 2,000 m in the Tongue of the Ocean, Bahamas, with a description of a new sedimentation trap. J. Mar. Res.,34, 341–354.
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Nagaya, Y., Nakamura, K. Artificial radionuclides in the western Northwest Pacific (I)90Sr and137Cs in the deep waters. Journal of the Oceanographical Society of Japan 37, 135–144 (1981). https://doi.org/10.1007/BF02308097
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DOI: https://doi.org/10.1007/BF02308097