Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans
The North Atlantic and Arctic oceans, along with the North Pacific, are the main reservoirs of anthropogenic radionuclides introduced in the past 75 years. The POSEIDON-R compartment model was applied to the North Atlantic and Arctic oceans to reconstruct 137 Cs contamination in 1945–2020 due to mul...
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crfrontiers:10.3389/fmars.2021.806450 2024-03-31T07:50:42+00:00 Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans Maderich, Vladimir Kim, Kyeong Ok Bezhenar, Roman Jung, Kyung Tae Martazinova, Vazira Brovchenko, Igor 2021 http://dx.doi.org/10.3389/fmars.2021.806450 https://www.frontiersin.org/articles/10.3389/fmars.2021.806450/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 8 ISSN 2296-7745 Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography journal-article 2021 crfrontiers https://doi.org/10.3389/fmars.2021.806450 2024-03-05T00:05:02Z The North Atlantic and Arctic oceans, along with the North Pacific, are the main reservoirs of anthropogenic radionuclides introduced in the past 75 years. The POSEIDON-R compartment model was applied to the North Atlantic and Arctic oceans to reconstruct 137 Cs contamination in 1945–2020 due to multiple sources: global fallout, exchange flows with other oceans, point-source inputs in the ocean from reprocessing plants and other nuclear facilities, the impact of the Chernobyl accident and secondary contamination resulting from river runoff and redissolution from bottom sediments. The model simulated the marine environment as a system of 3D compartments comprising the water column, bottom sediment, and biota. The dynamic model described the transfer of 137 Cs through the pelagic and benthic food chains. The simulation results were validated using the marine database MARIS. The calculated concentrations of 137 Cs in the seaweed and non-piscivorous and piscivorous pelagic fish mostly followed the concentration of 137 Cs in water. The concentration in coastal predator fish lagged behind the concentration in water as a result of a diet that includes both pelagic and benthic organisms. The impact of each considered source on the total concentration of 137 Cs in non-piscivorous fish in the regions of interest was analyzed. Whereas the contribution from global fallout dominated in 1960–1970, in 1970–1990, the contribution of 137 Cs released from reprocessing plants exceeded the contributions from other sources in almost all considered regions. Secondary contamination due to river runoff was less than 4% of ocean influx. The maximum total inventory of 137 Cs in the Arctic Ocean (31,122 TBq) was reached in 1988, whereas the corresponding inventory in the bottom sediment was approximately 6% of the total. The general agreement between simulated and observed 137 Cs concentrations in water and bottom sediment was confirmed by the estimates of geometric mean and geometric standard deviation, which varied from 0.89 to 1.29 and ... Article in Journal/Newspaper Arctic Arctic Ocean North Atlantic Frontiers (Publisher) Arctic Arctic Ocean Pacific Frontiers in Marine Science 8 |
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collection |
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language |
unknown |
topic |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
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Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography Maderich, Vladimir Kim, Kyeong Ok Bezhenar, Roman Jung, Kyung Tae Martazinova, Vazira Brovchenko, Igor Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans |
topic_facet |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
description |
The North Atlantic and Arctic oceans, along with the North Pacific, are the main reservoirs of anthropogenic radionuclides introduced in the past 75 years. The POSEIDON-R compartment model was applied to the North Atlantic and Arctic oceans to reconstruct 137 Cs contamination in 1945–2020 due to multiple sources: global fallout, exchange flows with other oceans, point-source inputs in the ocean from reprocessing plants and other nuclear facilities, the impact of the Chernobyl accident and secondary contamination resulting from river runoff and redissolution from bottom sediments. The model simulated the marine environment as a system of 3D compartments comprising the water column, bottom sediment, and biota. The dynamic model described the transfer of 137 Cs through the pelagic and benthic food chains. The simulation results were validated using the marine database MARIS. The calculated concentrations of 137 Cs in the seaweed and non-piscivorous and piscivorous pelagic fish mostly followed the concentration of 137 Cs in water. The concentration in coastal predator fish lagged behind the concentration in water as a result of a diet that includes both pelagic and benthic organisms. The impact of each considered source on the total concentration of 137 Cs in non-piscivorous fish in the regions of interest was analyzed. Whereas the contribution from global fallout dominated in 1960–1970, in 1970–1990, the contribution of 137 Cs released from reprocessing plants exceeded the contributions from other sources in almost all considered regions. Secondary contamination due to river runoff was less than 4% of ocean influx. The maximum total inventory of 137 Cs in the Arctic Ocean (31,122 TBq) was reached in 1988, whereas the corresponding inventory in the bottom sediment was approximately 6% of the total. The general agreement between simulated and observed 137 Cs concentrations in water and bottom sediment was confirmed by the estimates of geometric mean and geometric standard deviation, which varied from 0.89 to 1.29 and ... |
format |
Article in Journal/Newspaper |
author |
Maderich, Vladimir Kim, Kyeong Ok Bezhenar, Roman Jung, Kyung Tae Martazinova, Vazira Brovchenko, Igor |
author_facet |
Maderich, Vladimir Kim, Kyeong Ok Bezhenar, Roman Jung, Kyung Tae Martazinova, Vazira Brovchenko, Igor |
author_sort |
Maderich, Vladimir |
title |
Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans |
title_short |
Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans |
title_full |
Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans |
title_fullStr |
Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans |
title_full_unstemmed |
Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans |
title_sort |
transport and fate of 137cs released from multiple sources in the north atlantic and arctic oceans |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fmars.2021.806450 https://www.frontiersin.org/articles/10.3389/fmars.2021.806450/full |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean North Atlantic |
genre_facet |
Arctic Arctic Ocean North Atlantic |
op_source |
Frontiers in Marine Science volume 8 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2021.806450 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
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1795029070296121344 |