Distributions of transuranium nuclides in sediments and biota of the North Atlantic Ocean
The effects of the interaction of marine sediments with their biotic population on the penetration, redistribution, sediment association and biotic availability of delivered transuranium nuclides are discussed as a function of both sedimentation regimes and in-fauna populations. Data on the penetration and redistribution patterns of fallout transuranium nuclides in the shallow sediments of Buzzards Bay, Massachusetts, are discussed in terms of the known parameters of sedimentation and in sediment biological activity. In this (and most common) type of sedimentation regime, translocation of bioturbationally downmixed transuranium nuclides back toward (and probable loss from) the sediment surface is demonstrated. Various biological and biochemical mechanisms are advanced that may act on these nuclides within sediments. The increased availability to marine biota of sediment transuranium nuclides by these remobilization processes is indicated by data showing accumulations of these nuclides in marine invertebrates and fish. Data are included on the distribution of /sup 239/Pu, /sup 240/Pu, /sup 241/Am, /sup 137/Cs, and /sup 55/Fe in the samples. (CH)
- Research Organization:
- Woods Hole Oceanographic Institution, Mass. (USA)
- DOE Contract Number:
- E(11-1)3563
- OSTI ID:
- 7267109
- Report Number(s):
- COO-3563-34; COO-2379-7; CONF-751105-21; TRN: 08-019605
- Resource Relation:
- Conference: IAEA international symposium on transuranium nuclides in the environment, San Francisco, CA, USA, 17 Nov 1975
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AMERICIUM 241
RADIOECOLOGICAL CONCENTRATION
AQUATIC ORGANISMS
SAMPLING
ATLANTIC OCEAN
FALLOUT DEPOSITS
RADIONUCLIDE KINETICS
RADIONUCLIDE MIGRATION
CESIUM 137
IRON 55
PLUTONIUM 239
PLUTONIUM 240
SEDIMENTS
AQUATIC ECOSYSTEMS
DIFFUSION
FISHES
INVERTEBRATES
RADIOISOTOPES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
AMERICIUM ISOTOPES
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
ECOLOGICAL CONCENTRATION
ECOSYSTEMS
ELECTRON CAPTURE RADIOISOTOPES
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FALLOUT
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
IRON ISOTOPES
ISOTOPES
MASS TRANSFER
NUCLEI
ODD-EVEN NUCLEI
PLUTONIUM ISOTOPES
SEAS
SURFACE WATERS
VERTEBRATES
YEARS LIVING RADIOISOTOPES
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