Dataset Persistent ID
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doi:10.25850/nioz/7b.b.jc |
Publication Date
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2021-07-20 |
Title
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Dissolved Cd, Co, Cu, Fe, Mn, Ni and Zn in the Arctic Ocean
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Other ID
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DAS:0c106026-0cae-4c4f-88d9-f4bdece5bb2c
DOI:10.25850/nioz/7b.b.jc
https://doi.org/10.1594/PANGAEA.932797
DOI: 10.1029/2021JC017323
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Author
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Gerringa, Loes (Royal Netherlands Institute for Sea Research) - ORCID: 0000-0002-3139-8352
Middag, Rob (Royal Netherlands Institute for Sea Research) - ORCID: 0000-0002-3326-530X
Rijkenberg, Micha (Royal Netherlands Institute for Sea Research) - ORCID: 0000-0002-1069-868X
Slagter, Hans (Royal Netherlands Institute for Sea Research) - ORCID: 0000-0002-4243-9869
Laan, Patrick (Royal Netherlands Institute for Sea Research) - ORCID: 0000-0001-5115-6070
Paffrath, Ronja (3. Marine Isotope Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Oldenburg, GermanyRoyal Netherlands Institute for Sea Research) - ORCID: 0000-0001-9725-3167
Bauch, Dorothea (4. Leibniz Laboratory for Radiometric Dating and Stable Isotope Research, Kiel University, Kiel, Germany and GEOMAR Hemholtz Centre for Ocean Research, Kiel, Germany) - ORCID: 0000-0002-1419-9714
Rutgers van der Loeff, Michiel (5. Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany) - ORCID: 0000-0003-1393-3742
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Contact
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Use email button above to contact.
Middag, Rob (NIOZ Royal Netherlands Institute for Sea Research)
Research Data Management (NIOZ Royal Netherlands Institute for Sea Research)
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Description
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During the Polarstern (PS94) expedition in 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 d18O 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 the source distance, likely due to Mn-precipitation with transport time. 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 enriched Atlantic water going 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 of 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 we suggest that scavenging can decrease the dissolved concentrations with time. This study provides a baseline to assess future change, and additionally identifies main 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. (2021-05-20)
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Subject
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Earth and Environmental Sciences
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Keyword
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Trace metals
dissolved
PS94
GEOTRACES
Cd
Co
Cu
Fe
Mn
Ni
Zn
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Producer
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Gerringa, Loes (Royal Netherlands Institute for Sea Research)
Middag, Rob (Royal Netherlands Institute for Sea Research)
Rijkenberg, Micha (Royal Netherlands Institute for Sea Research)
Slagter, Hans (Royal Netherlands Institute for Sea Research)
Laan, Patrick (Royal Netherlands Institute for Sea Research)
Paffrath, Ronja (3. Marine Isotope Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Oldenburg, GermanyRoyal Netherlands Institute for Sea Research)
Bauch, Dorothea (4. Leibniz Laboratory for Radiometric Dating and Stable Isotope Research, Kiel University, Kiel, Germany and GEOMAR Hemholtz Centre for Ocean Research, Kiel, Germany)
Rutgers van der Loeff, Michiel (5. Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany)
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Production Date
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2021-07-20
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Contributor
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Hosting Institution : NIOZ Royal Netherlands Institute for Sea Research in cooperation with Utrecht University
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Grant Information
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NWO (origin and fate of ligands): 822.01.018
DFG: BA1689/2-2
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Distributor
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Research Data Management (NIOZ Royal Netherlands Institute for Sea Research)
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Distribution Date
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2021-05-20
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Depositor
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loes gerringa
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Deposit Date
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2021-05-20
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Date of Collection
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Start: 2015-08-17 ; End: 2015-10-14
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