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Fate of anthropogen...
Fate of anthropogenic radionuclides (Sr-90, Cs-137, Pu-238, Pu-239, Pu-240, 241Am) in seawater in the northern Benguela upwelling system off Namibia
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- Rozmaric, M. (författare)
- Int Atom Energy Agcy IAEA, Monaco
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- Chamizo, E. (författare)
- Univ Sevilla Junta de Andalucia, Spain
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- Louw, D. C. (författare)
- Minist Fisheries & Marine Resources, Namibia
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- López Lora, Mercedes (författare)
- Linköpings universitet,Avdelningen för diagnostik och specialistmedicin,Medicinska fakulteten,Univ Sevilla Junta de Andalucia, Spain
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- Blinova, O. (författare)
- Int Atom Energy Agcy IAEA, Monaco
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- Levy, I (författare)
- Int Atom Energy Agcy IAEA, Monaco
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- Mudumbi, B. (författare)
- Natl Commiss Res Sci & Technol NCRST, Namibia
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- van der Plas, A. K. (författare)
- Minist Fisheries & Marine Resources, Namibia
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- Tenorio, R. Garcia (författare)
- Univ Sevilla Junta de Andalucia, Spain; ETS Arquitectura, Spain
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- McGinnity, P. (författare)
- Int Atom Energy Agcy IAEA, Monaco
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- Osvath, I (författare)
- Int Atom Energy Agcy IAEA, Monaco
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(creator_code:org_t)
- PERGAMON-ELSEVIER SCIENCE LTD, 2022
- 2022
- Engelska.
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Ingår i: Chemosphere. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0045-6535 .- 1879-1298. ; 286
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A baseline study on anthropogenic radioactivity in the Namibian marine ecosystem, which is part of the northern Benguela upwelling system, known as one of the most productive ocean areas in the world, has been performed. A scientific cruise carried out in 2014 covering inshore and offshore areas, exhibiting different oceanographic features, has provided a basis for better understanding the distributions, ratios and inventories of six anthropogenic radionuclides (90Sr, 137Cs, 238Pu, 239Pu, 240Pu and 241Am) in seawater. Although 3H was also measured, due to extremely low levels, its behaviour was not studied. The main source of 90Sr, 137Cs, 239Pu, 240Pu and 241Am in the samples analysed was proven to be global fallout, a finding further confirmed by 240Pu/239Pu and 90Sr/137Cs ratios. Furthermore, the 238Pu SNAP-9A satellite accident signal was confirmed once again through the determination of the 238Pu/239+240Pu activity ratio. Inshore and offshore samples showed different patterns due to the unique oceanographic features of this upwelling system. The levels of anthropogenic radionuclides, comprehensively assessed for the first time in this region, are comparable with the few existing data and filled a critical gap for the Southern Atlantic Ocean.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Namibian shelf; Conservative radionuclides; Particle reactive radionuclides; Activity ratio; Radionuclide inventory; Seawater profile
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Rozmaric, M.
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Chamizo, E.
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Louw, D. C.
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López Lora, Merc ...
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Blinova, O.
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Levy, I
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visa fler...
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Mudumbi, B.
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van der Plas, A. ...
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Tenorio, R. Garc ...
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McGinnity, P.
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Osvath, I
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visa färre...
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