The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage
A total of 232 samples were analyzed for concentrations of dissolved aluminum ([Al]) and manganese ([Mn]) in Drake Passage. Both [Al] and [Mn] were extremely low (similar to 0.3 and 0.1 nM, respectively) in the surface layer of the middle Drake Passage, most likely due to limited input and biologica...
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ftnioz:oai:imis.nioz.nl:231134 2023-05-15T13:47:57+02:00 The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage Middag, R. de Baar, H.J.W. Laan, P. Huhn, O. 2012 application/pdf https://www.vliz.be/imisdocs/publications/19/256719.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000299708700001 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1029/2011JC007434 https://www.vliz.be/imisdocs/publications/19/256719.pdf info:eu-repo/semantics/openAccess %3Ci%3EJ.+Geophys.+Res.+117%3C%2Fi%3E.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1029%2F2011JC007434%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1029%2F2011JC007434%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftnioz https://doi.org/10.1029/2011JC007434 2022-05-01T13:57:16Z A total of 232 samples were analyzed for concentrations of dissolved aluminum ([Al]) and manganese ([Mn]) in Drake Passage. Both [Al] and [Mn] were extremely low (similar to 0.3 and 0.1 nM, respectively) in the surface layer of the middle Drake Passage, most likely due to limited input and biological uptake/scavenging. Elevated [Al] (>14 nM) and [Mn] (>2 nM) over the South American continental shelf are related to land run-off, whereas elevated concentrations (>1 nM and >2 nM, respectively) near the Antarctic Peninsula are most likely related to sediment re-suspension. Re-suspension of sedimentary particles and pore waters influences the distribution of [Al] and [Mn] over the continental slopes on both sides of Drake Passage. The influence of the continental margins and accumulated dust input potentially explains the higher [Al] observed eastward in the Atlantic section of the Southern Ocean. In the northern Drake Passage, elevated [Al] (similar to 0.8 nM) and [Mn] (similar to 0.3 nM) near the seafloor are most likely the result of bottom sediment re-suspension by the relatively strong currents. In the deep southern Drake Passage sediment re-suspension associated with the inflow of Weddell Sea Deep Water appears to cause elevated [Al] (>1 nM) and [Mn] (similar to 0.4 nM). In the deep northern Drake Passage, North Atlantic Deep Water brings in elevated [Al] and Southeast Pacific Deep Slope Water brings in the signature of Pacific hydrothermal vents. Elevated [Mn] and delta He-3 were correlated in this water layer and are most likely originating from the volcanically active ridges in the Pacific Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Drake Passage North Atlantic Deep Water North Atlantic Southern Ocean Weddell Sea NIOZ Repository (Royal Netherlands Institute for Sea Research) Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Pacific Weddell Journal of Geophysical Research: Oceans 117 C1 |
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NIOZ Repository (Royal Netherlands Institute for Sea Research) |
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ftnioz |
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English |
description |
A total of 232 samples were analyzed for concentrations of dissolved aluminum ([Al]) and manganese ([Mn]) in Drake Passage. Both [Al] and [Mn] were extremely low (similar to 0.3 and 0.1 nM, respectively) in the surface layer of the middle Drake Passage, most likely due to limited input and biological uptake/scavenging. Elevated [Al] (>14 nM) and [Mn] (>2 nM) over the South American continental shelf are related to land run-off, whereas elevated concentrations (>1 nM and >2 nM, respectively) near the Antarctic Peninsula are most likely related to sediment re-suspension. Re-suspension of sedimentary particles and pore waters influences the distribution of [Al] and [Mn] over the continental slopes on both sides of Drake Passage. The influence of the continental margins and accumulated dust input potentially explains the higher [Al] observed eastward in the Atlantic section of the Southern Ocean. In the northern Drake Passage, elevated [Al] (similar to 0.8 nM) and [Mn] (similar to 0.3 nM) near the seafloor are most likely the result of bottom sediment re-suspension by the relatively strong currents. In the deep southern Drake Passage sediment re-suspension associated with the inflow of Weddell Sea Deep Water appears to cause elevated [Al] (>1 nM) and [Mn] (similar to 0.4 nM). In the deep northern Drake Passage, North Atlantic Deep Water brings in elevated [Al] and Southeast Pacific Deep Slope Water brings in the signature of Pacific hydrothermal vents. Elevated [Mn] and delta He-3 were correlated in this water layer and are most likely originating from the volcanically active ridges in the Pacific Ocean. |
format |
Article in Journal/Newspaper |
author |
Middag, R. de Baar, H.J.W. Laan, P. Huhn, O. |
spellingShingle |
Middag, R. de Baar, H.J.W. Laan, P. Huhn, O. The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage |
author_facet |
Middag, R. de Baar, H.J.W. Laan, P. Huhn, O. |
author_sort |
Middag, R. |
title |
The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage |
title_short |
The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage |
title_full |
The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage |
title_fullStr |
The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage |
title_full_unstemmed |
The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage |
title_sort |
effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in drake passage |
publishDate |
2012 |
url |
https://www.vliz.be/imisdocs/publications/19/256719.pdf |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Pacific Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Pacific Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Drake Passage North Atlantic Deep Water North Atlantic Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Drake Passage North Atlantic Deep Water North Atlantic Southern Ocean Weddell Sea |
op_source |
%3Ci%3EJ.+Geophys.+Res.+117%3C%2Fi%3E.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1029%2F2011JC007434%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1029%2F2011JC007434%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000299708700001 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1029/2011JC007434 https://www.vliz.be/imisdocs/publications/19/256719.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2011JC007434 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
117 |
container_issue |
C1 |
_version_ |
1766248036787290112 |