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...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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ftnerc:oai:nora.nerc.ac.uk:519750 2023-05-15T14:02:21+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 text http://nora.nerc.ac.uk/id/eprint/519750/ https://nora.nerc.ac.uk/id/eprint/519750/1/Bown%20Phil%20Trans%20WAP%202018.pdf http://rsta.royalsocietypublishing.org/content/376/2122/20170172 en eng Royal Society https://nora.nerc.ac.uk/id/eprint/519750/1/Bown%20Phil%20Trans%20WAP%202018.pdf Bown, Johann; van Haren, Hans; Meredith, Michael P. orcid:0000-0002-7342-7756 Venables, Hugh J.; Laan, Patrick; Brearley, J. Alexander orcid:0000-0003-3700-8017 de Baar, Hein J.W. 2018 Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula. Philosophical Transactions of the Royal Society of London, A, 376 (2122), 20170172. https://doi.org/10.1098/rsta.2017.0172 <https://doi.org/10.1098/rsta.2017.0172> Publication - Article PeerReviewed 2018 ftnerc https://doi.org/10.1098/rsta.2017.0172 2023-02-17T00:02:00Z 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 Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean 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) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376 2122 20170172 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
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 |
format |
Article in Journal/Newspaper |
author |
Bown, Johann van Haren, Hans Meredith, Michael P. Venables, Hugh J. Laan, Patrick Brearley, J. Alexander de Baar, Hein J.W. |
spellingShingle |
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 |
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 |
Royal Society |
publishDate |
2018 |
url |
http://nora.nerc.ac.uk/id/eprint/519750/ https://nora.nerc.ac.uk/id/eprint/519750/1/Bown%20Phil%20Trans%20WAP%202018.pdf http://rsta.royalsocietypublishing.org/content/376/2122/20170172 |
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 Southern Ocean Antarctic Peninsula Austral Marguerite Ryder Ryder Bay |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Austral Marguerite Ryder Ryder Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/519750/1/Bown%20Phil%20Trans%20WAP%202018.pdf Bown, Johann; van Haren, Hans; Meredith, Michael P. orcid:0000-0002-7342-7756 Venables, Hugh J.; Laan, Patrick; Brearley, J. Alexander orcid:0000-0003-3700-8017 de Baar, Hein J.W. 2018 Evidences of strong sources of DFe and DMn in Ryder Bay, Western Antarctic Peninsula. Philosophical Transactions of the Royal Society of London, A, 376 (2122), 20170172. https://doi.org/10.1098/rsta.2017.0172 <https://doi.org/10.1098/rsta.2017.0172> |
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 |
_version_ |
1766272571994537984 |