Author: Dan Josefsson (fil. dr.)
Publisher:
ISBN: 9789162829674
Category : Radioactive pollution of the sea
Languages : en
Pages : 159

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Book Description

Author: Ciara Ann McMahon
Publisher:
ISBN:
Category : Radioisotopes
Languages : en
Pages : 205

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Book Description

Author:
Publisher:
ISBN:
Category : Aquatic organisms
Languages : en
Pages : 52

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Book Description

Author: United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Oceanography, Gulf of Mexico, and the Outer Continental Shelf
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 318

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 47

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Book Description
This study was performed to establish a quality controlled data set about the levels of radio nuclide activity in the environment and in selected biota in the U.S. Arctic. Sediment and biota samples were collected by the National Oceanic and Atmospheric Administration (NOAA), the National Biological Service, and the North Slope Borough's Department of Wildlife Management to determine the impact of anthropogenic radionuclides in the Arctic. The results summarized in this report are derived from samples collected in northwest Alaska with emphasis on species harvested for subsistence in Barrow, Alaska. Samples were analyzed for the anthropogenic radionuclides 9°Sr, 137Cs, 238Pu, 239Pu, 24°Pu and 241Am. The naturally occurring radionuclides 4°K, 212Pb and 214Pb were also measured. One goal of this study was to determine the amounts of anthropogenic radionuclides present in the Beaufort Sea. Sediment samples were isotopically fingerprinted to determine the sources of radio nuclide activities. Biota samples of subsistence and ecological value were analyzed to search for evidence of bio-accumulation of radionuclides and to determine the radiation exposures associated with subsistence living in northern Alaska. The anthropogenic radio nuclide content of sediments collected in the Beaufort Sea was predominantly the result of the deposition of global fallout. No other sources of anthropogenic radionuclides could be conclusively identified in the sediments. The anthropogenic radio nuclide concentrations in fish, birds and mammals were very low. Assuming that ingestion of food is an important pathway leading to human contact with radioactive contaminants and given the dietary patterns in coastal Arctic communities, it can be surmised that marine food chains are presently not significantly affected.

Author: Jixin Qiao
Publisher: Frontiers Media SA
ISBN: 2832521770
Category : Science
Languages : en
Pages : 160

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Book Description

Author: Olaf M. Johannessen
Publisher: Springer Science & Business Media
ISBN: 3540498567
Category : Science
Languages : en
Pages : 434

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Book Description
This book describes a new tool called the Generic Model System for simulations and assessment of potential radioactive spreading in the Arctic regions. It considers the present and future potential for spreading of radionuclear pollution from sources such as from the major Russian processing plants as well as from European sources such as the UK Sellafield plant. The book combines the expertise of professionals from the radionuclear and climate-change sciences.

Author: International Atomic Energy Agency
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 230

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Book Description
Summarises the results of a Coordinated Research Project carried out by the IAEA's Marine Environment Laboratory in Monaco. The results obtained confirm that the dominant source of anthropogenic radionuclides in the marine environment is global fallout.

Author: United States. Congress. Office of Technology Assessment
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 252

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Book Description
Examines enviromental and human health impacts from wastes dumped in Arctic and North Pacific regions, from nuclear contaminants discharged into these environments, and from radioactive releases from both past and future nuclear activities in region.

Author:
Publisher: Elsevier
ISBN: 0080496385
Category : Science
Languages : en
Pages : 310

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Book Description
This book on Marine Radioactivity sets out to cover most of the aspects of marine radioactivity which have been the focus of scientific study in recent decades. The authors and their reviews divide into topic areas which have defined the field over its history. They cover the suite of natural radioisotopes which have been present in the oceans since their formation and quantitatively dominate the inventory of radioactivity in the oceans. Also addressed are the suite of artificial radionuclides introduced to the oceans as a consequence of the use of the atom for development of nuclear energy, nuclear weapons and various applications of nuclear science. The major source of these continues to derive from the global fallout of atmospheric tests of nuclear weapons in the 1950s and 1960s but also includes both planned and accidental releases of radioactivity from both civilian and military nuclear technology. The other division of the major study direction depends on whether the objective is to use the radionuclides as powerful tools to study oceanic processes, to describe and understand the ocean distribution of the various natural or artificial radionuclides or to assess the different radionuclides' impact on and pathways to man or marine organisms. The oceans cover 70% of the Earth's surface and thus contains a corresponding large share of the Earth's radioactivity. Marine Radioactivity covers topics of recent scientific study in this young field. It examines both natural radioactivity (radioactivity naturally present in oceans since their formation) and artificial radioactivity (radioactivity introduced by man and use of atomic and nuclear energy) with regard to possible effects on the global environment.