Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula
The spatial distribution, biogeochemical cycling and external sources of dissolved iron and dissolved manganese (DFe and DMn) were investigated in Ryder Bay, a small coastal embayment of the West Antarctic Peninsula, during Austral summer (2013 and 2014). Dissolved concentrations were measured throu...
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ftpubmed:oai:pubmedcentral.nih.gov:5954471 2023-05-15T13:51:43+02:00 Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula Bown, Johann van Haren, Hans Meredith, Michael P. Venables, Hugh J. Laan, Patrick Brearley, J. Alexander de Baar, Hein J. W. 2018-06-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954471/ http://www.ncbi.nlm.nih.gov/pubmed/29760115 https://doi.org/10.1098/rsta.2017.0172 en eng The Royal Society Publishing http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954471/ http://www.ncbi.nlm.nih.gov/pubmed/29760115 http://dx.doi.org/10.1098/rsta.2017.0172 © 2018 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. Articles Text 2018 ftpubmed https://doi.org/10.1098/rsta.2017.0172 2019-06-30T00:47:19Z The spatial distribution, biogeochemical cycling and external sources of dissolved iron and dissolved manganese (DFe and DMn) were investigated in Ryder Bay, a small coastal embayment of the West Antarctic Peninsula, during Austral summer (2013 and 2014). Dissolved concentrations were measured throughout the water column at 11 stations within Ryder Bay. The concentration ranges of DFe and DMn were large, between 0.58 and 32.7 nM, and between 0.18 and 26.2 nM, respectively, exhibiting strong gradients from the surface to the bottom. Surface concentrations of DFe and DMn were higher than concentrations reported for the Southern Ocean and coastal Antarctic waters, and extremely high concentrations were detected in deep water. Glacial meltwater and shallow sediments are likely to be the main sources of DFe and DMn in the euphotic zone, while lateral advection associated with local sediment resuspension and vertical mixing are significant sources for intermediate and deep waters. During summer, vertical mixing of intermediate and deep waters and sediment resuspension occurring from Marguerite Trough to Ryder Bay are thought to be amplified by a series of overflows at the sills, enhancing the input of Fe and Mn from bottom sediment and increasing their concentrations up to the euphotic layer. This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’. Text Antarc* Antarctic Antarctic Peninsula Southern Ocean PubMed Central (PMC) Antarctic Antarctic Peninsula Austral Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Bay ENVELOPE(-68.333,-68.333,-67.567,-67.567) Southern Ocean Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376 2122 20170172 |
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Articles Bown, Johann van Haren, Hans Meredith, Michael P. Venables, Hugh J. Laan, Patrick Brearley, J. Alexander de Baar, Hein J. W. Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula |
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Articles |
description |
The spatial distribution, biogeochemical cycling and external sources of dissolved iron and dissolved manganese (DFe and DMn) were investigated in Ryder Bay, a small coastal embayment of the West Antarctic Peninsula, during Austral summer (2013 and 2014). Dissolved concentrations were measured throughout the water column at 11 stations within Ryder Bay. The concentration ranges of DFe and DMn were large, between 0.58 and 32.7 nM, and between 0.18 and 26.2 nM, respectively, exhibiting strong gradients from the surface to the bottom. Surface concentrations of DFe and DMn were higher than concentrations reported for the Southern Ocean and coastal Antarctic waters, and extremely high concentrations were detected in deep water. Glacial meltwater and shallow sediments are likely to be the main sources of DFe and DMn in the euphotic zone, while lateral advection associated with local sediment resuspension and vertical mixing are significant sources for intermediate and deep waters. During summer, vertical mixing of intermediate and deep waters and sediment resuspension occurring from Marguerite Trough to Ryder Bay are thought to be amplified by a series of overflows at the sills, enhancing the input of Fe and Mn from bottom sediment and increasing their concentrations up to the euphotic layer. This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’. |
format |
Text |
author |
Bown, Johann van Haren, Hans Meredith, Michael P. Venables, Hugh J. Laan, Patrick Brearley, J. Alexander de Baar, Hein J. W. |
author_facet |
Bown, Johann van Haren, Hans Meredith, Michael P. Venables, Hugh J. Laan, Patrick Brearley, J. Alexander de Baar, Hein J. W. |
author_sort |
Bown, Johann |
title |
Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula |
title_short |
Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula |
title_full |
Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula |
title_fullStr |
Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula |
title_full_unstemmed |
Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula |
title_sort |
evidences of strong sources of dfe and dmn in ryder bay, western antarctic peninsula |
publisher |
The Royal Society Publishing |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954471/ http://www.ncbi.nlm.nih.gov/pubmed/29760115 https://doi.org/10.1098/rsta.2017.0172 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-68.333,-68.333,-67.567,-67.567) |
geographic |
Antarctic Antarctic Peninsula Austral Marguerite Ryder Ryder Bay Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Austral Marguerite Ryder Ryder Bay Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954471/ http://www.ncbi.nlm.nih.gov/pubmed/29760115 http://dx.doi.org/10.1098/rsta.2017.0172 |
op_rights |
© 2018 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rsta.2017.0172 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
376 |
container_issue |
2122 |
container_start_page |
20170172 |
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1766255736012144640 |