Mercury in dated Greenland marine sediments
Twenty marine sediment cores from Greenland were analysed for mercury, and dated by the lead-210 method. In general the cores exhibit a mercury profile with higher mercury concentrations in the upper centimetres of the core. The cores were studied by linear regression of In Hg vs, age of the sedimen...
Published in: | The Science of The Total Environment |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2000
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Online Access: | https://orbit.dtu.dk/en/publications/2ca906fb-5888-4d16-b8df-262c0af21473 https://doi.org/10.1016/S0048-9697(99)00433-7 |
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ftdtupubl:oai:pure.atira.dk:publications/2ca906fb-5888-4d16-b8df-262c0af21473 2024-05-12T08:00:07+00:00 Mercury in dated Greenland marine sediments Asmund, G. Nielsen, S.P. 2000 https://orbit.dtu.dk/en/publications/2ca906fb-5888-4d16-b8df-262c0af21473 https://doi.org/10.1016/S0048-9697(99)00433-7 eng eng https://orbit.dtu.dk/en/publications/2ca906fb-5888-4d16-b8df-262c0af21473 info:eu-repo/semantics/restrictedAccess Asmund , G & Nielsen , S P 2000 , ' Mercury in dated Greenland marine sediments ' , Science of the Total Environment , vol. 245 , no. 1-3 , pp. 61-72 . https://doi.org/10.1016/S0048-9697(99)00433-7 Nuklear sikkerhed /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2000 ftdtupubl https://doi.org/10.1016/S0048-9697(99)00433-7 2024-04-17T14:51:37Z Twenty marine sediment cores from Greenland were analysed for mercury, and dated by the lead-210 method. In general the cores exhibit a mercury profile with higher mercury concentrations in the upper centimetres of the core. The cores were studied by linear regression of In Hg vs, age of the sediment for the youngest 100 years. As a rule the mercury decreased with depth in the sediment with various degrees of significance. The increase of the mercury flux during the last 100 years is roughly a doubling. The increase may be of anthropogenic origin as it is restricted to the last 100 years. In four cores the concentration of manganese was found also to increase in the top layers indicating diagenesis. In the other cases the higher concentrations were not accompanied by higher manganese concentrations. The mercury flux to the sediment surface was generally proportional to the Pb-210 flux indicating that the mercury mainly originates from atmospheric washout. But the large variability indicates that other processes also influence the mercury flux to Arctic marine sediments. (C) 2000 Elsevier Science B.V. All rights reserved. Article in Journal/Newspaper Arctic Greenland Technical University of Denmark: DTU Orbit Arctic Greenland The Science of The Total Environment 245 1-3 61 72 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Nuklear sikkerhed /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Nuklear sikkerhed /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Asmund, G. Nielsen, S.P. Mercury in dated Greenland marine sediments |
topic_facet |
Nuklear sikkerhed /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Twenty marine sediment cores from Greenland were analysed for mercury, and dated by the lead-210 method. In general the cores exhibit a mercury profile with higher mercury concentrations in the upper centimetres of the core. The cores were studied by linear regression of In Hg vs, age of the sediment for the youngest 100 years. As a rule the mercury decreased with depth in the sediment with various degrees of significance. The increase of the mercury flux during the last 100 years is roughly a doubling. The increase may be of anthropogenic origin as it is restricted to the last 100 years. In four cores the concentration of manganese was found also to increase in the top layers indicating diagenesis. In the other cases the higher concentrations were not accompanied by higher manganese concentrations. The mercury flux to the sediment surface was generally proportional to the Pb-210 flux indicating that the mercury mainly originates from atmospheric washout. But the large variability indicates that other processes also influence the mercury flux to Arctic marine sediments. (C) 2000 Elsevier Science B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Asmund, G. Nielsen, S.P. |
author_facet |
Asmund, G. Nielsen, S.P. |
author_sort |
Asmund, G. |
title |
Mercury in dated Greenland marine sediments |
title_short |
Mercury in dated Greenland marine sediments |
title_full |
Mercury in dated Greenland marine sediments |
title_fullStr |
Mercury in dated Greenland marine sediments |
title_full_unstemmed |
Mercury in dated Greenland marine sediments |
title_sort |
mercury in dated greenland marine sediments |
publishDate |
2000 |
url |
https://orbit.dtu.dk/en/publications/2ca906fb-5888-4d16-b8df-262c0af21473 https://doi.org/10.1016/S0048-9697(99)00433-7 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland |
genre_facet |
Arctic Greenland |
op_source |
Asmund , G & Nielsen , S P 2000 , ' Mercury in dated Greenland marine sediments ' , Science of the Total Environment , vol. 245 , no. 1-3 , pp. 61-72 . https://doi.org/10.1016/S0048-9697(99)00433-7 |
op_relation |
https://orbit.dtu.dk/en/publications/2ca906fb-5888-4d16-b8df-262c0af21473 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S0048-9697(99)00433-7 |
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The Science of The Total Environment |
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245 |
container_issue |
1-3 |
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61 |
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72 |
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