Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean
During the Polarstern (PS94) expedition, summer 2015, part of the international GEOTRACES program, sources and sinks of dissolved (D) Cd, Co, Cu, Fe, Mn, Ni, and Zn were studied in the central Arctic Ocean. In the Polar Surface Water in which the TransPolar Drift (TPD) is situated, salinity and δ18O...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://epic.awi.de/id/eprint/54602/ https://doi.org/10.1029/2021JC017323 https://hdl.handle.net/10013/epic.6239c0df-0062-4dff-920d-91a1f914d5ac |
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ftawi:oai:epic.awi.de:54602 2023-05-15T14:27:25+02:00 Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean Gerringa, L. J. A. Rijkenberg, M. J. A. Slagter, H. A. Laan, P. Paffrath, R. Bauch, D. Rutgers van der Loeff, M. M. Middag, R. 2021 https://epic.awi.de/id/eprint/54602/ https://doi.org/10.1029/2021JC017323 https://hdl.handle.net/10013/epic.6239c0df-0062-4dff-920d-91a1f914d5ac unknown Gerringa, L. J. A. , Rijkenberg, M. J. A. , Slagter, H. A. , Laan, P. , Paffrath, R. , Bauch, D. , Rutgers van der Loeff, M. M. orcid:0000-0003-1393-3742 and Middag, R. (2021) Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean , Journal of Geophysical Research: Oceans, 126 (9) . doi:10.1029/2021JC017323 <https://doi.org/10.1029/2021JC017323> , hdl:10013/epic.6239c0df-0062-4dff-920d-91a1f914d5ac EPIC3Journal of Geophysical Research: Oceans, 126(9), ISSN: 2169-9275 Article isiRev 2021 ftawi https://doi.org/10.1029/2021JC017323 2021-12-24T15:46:30Z During the Polarstern (PS94) expedition, summer 2015, part of the international GEOTRACES program, sources and sinks of dissolved (D) Cd, Co, Cu, Fe, Mn, Ni, and Zn were studied in the central Arctic Ocean. In the Polar Surface Water in which the TransPolar Drift (TPD) is situated, salinity and δ18O derived fractions indicated a distinct riverine source for silicate DCo, DCu, DFe, DMn, and DNi. Linear relationships between DMn and the meteoric fraction depended on source distance, likely due to Mn-precipitation during transport. In the upper 50 m of the Makarov Basin, outside the TPD core, DCo, DMn, DNi, DCd, and DCu were enriched by Pacific waters, whereas DFe seemed diluted. DCo, DFe, DMn, and DZn were relatively high in the Barents Sea and led to enrichment of Atlantic water flowing into the Nansen Basin. Deep concentrations of all metals were significantly lower in the Makarov Basin compared to the Nansen and Amundsen, the Eurasian, Basins. The Gakkel ridge hydrothermal input and higher continental slope convection are explanations for higher metal concentrations in the Eurasian Basins. Although scavenging rates are lower in the Makarov Basin compared to the Eurasian Basins, the residence time is longer and therefore scavenging can decrease the dissolved concentrations with time. This study provides a baseline to assess future change, and additionally identifies processes driving trace metal distributions. Our results underline the importance of fluvial input as well as shelf sources and internal cycling, notably scavenging, for the distribution of bio-active metals in the Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea makarov basin Nansen Basin Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Barents Sea Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Makarov Basin ENVELOPE(170.000,170.000,87.000,87.000) Pacific Journal of Geophysical Research: Oceans 126 9 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
During the Polarstern (PS94) expedition, summer 2015, part of the international GEOTRACES program, sources and sinks of dissolved (D) Cd, Co, Cu, Fe, Mn, Ni, and Zn were studied in the central Arctic Ocean. In the Polar Surface Water in which the TransPolar Drift (TPD) is situated, salinity and δ18O derived fractions indicated a distinct riverine source for silicate DCo, DCu, DFe, DMn, and DNi. Linear relationships between DMn and the meteoric fraction depended on source distance, likely due to Mn-precipitation during transport. In the upper 50 m of the Makarov Basin, outside the TPD core, DCo, DMn, DNi, DCd, and DCu were enriched by Pacific waters, whereas DFe seemed diluted. DCo, DFe, DMn, and DZn were relatively high in the Barents Sea and led to enrichment of Atlantic water flowing into the Nansen Basin. Deep concentrations of all metals were significantly lower in the Makarov Basin compared to the Nansen and Amundsen, the Eurasian, Basins. The Gakkel ridge hydrothermal input and higher continental slope convection are explanations for higher metal concentrations in the Eurasian Basins. Although scavenging rates are lower in the Makarov Basin compared to the Eurasian Basins, the residence time is longer and therefore scavenging can decrease the dissolved concentrations with time. This study provides a baseline to assess future change, and additionally identifies processes driving trace metal distributions. Our results underline the importance of fluvial input as well as shelf sources and internal cycling, notably scavenging, for the distribution of bio-active metals in the Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Gerringa, L. J. A. Rijkenberg, M. J. A. Slagter, H. A. Laan, P. Paffrath, R. Bauch, D. Rutgers van der Loeff, M. M. Middag, R. |
spellingShingle |
Gerringa, L. J. A. Rijkenberg, M. J. A. Slagter, H. A. Laan, P. Paffrath, R. Bauch, D. Rutgers van der Loeff, M. M. Middag, R. Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean |
author_facet |
Gerringa, L. J. A. Rijkenberg, M. J. A. Slagter, H. A. Laan, P. Paffrath, R. Bauch, D. Rutgers van der Loeff, M. M. Middag, R. |
author_sort |
Gerringa, L. J. A. |
title |
Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean |
title_short |
Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean |
title_full |
Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean |
title_fullStr |
Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean |
title_full_unstemmed |
Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean |
title_sort |
dissolved cd, co, cu, fe, mn, ni, and zn in the arctic ocean |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54602/ https://doi.org/10.1029/2021JC017323 https://hdl.handle.net/10013/epic.6239c0df-0062-4dff-920d-91a1f914d5ac |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(170.000,170.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Barents Sea Gakkel Ridge Makarov Basin Pacific |
geographic_facet |
Arctic Arctic Ocean Barents Sea Gakkel Ridge Makarov Basin Pacific |
genre |
Arctic Arctic Arctic Ocean Barents Sea makarov basin Nansen Basin |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea makarov basin Nansen Basin |
op_source |
EPIC3Journal of Geophysical Research: Oceans, 126(9), ISSN: 2169-9275 |
op_relation |
Gerringa, L. J. A. , Rijkenberg, M. J. A. , Slagter, H. A. , Laan, P. , Paffrath, R. , Bauch, D. , Rutgers van der Loeff, M. M. orcid:0000-0003-1393-3742 and Middag, R. (2021) Dissolved Cd, Co, Cu, Fe, Mn, Ni, and Zn in the Arctic Ocean , Journal of Geophysical Research: Oceans, 126 (9) . doi:10.1029/2021JC017323 <https://doi.org/10.1029/2021JC017323> , hdl:10013/epic.6239c0df-0062-4dff-920d-91a1f914d5ac |
op_doi |
https://doi.org/10.1029/2021JC017323 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
126 |
container_issue |
9 |
_version_ |
1766301150995283968 |