Coastal barium cycling at the West Antarctic Peninsula
Barium cycling in the ocean is associated with a number of processes, including the production and recycling of organic matter, freshwater fluxes, and phenomena that affect alkalinity. As a result, the biogeochemical cycle of barium offers insights into past and present oceanic conditions, with bari...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2016
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Online Access: | https://hdl.handle.net/1983/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 https://research-information.bris.ac.uk/en/publications/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 https://doi.org/10.1016/j.dsr2.2016.11.010 https://research-information.bris.ac.uk/ws/files/81910570/LTER_paper_to_re_submit_to_DSR_9thAug_16.pdf https://research-information.bris.ac.uk/ws/files/81910569/Coastal_Barium_Cycling_Equations_Tables_Figures.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 2024-05-19T07:30:42+00:00 Coastal barium cycling at the West Antarctic Peninsula Pyle, Kimberley M Hendry, Kate Sherrell, Rob Meredith , Michael Venables, Hugh J. Lagerstrom, Maria Morte-Rodenas, Anabel 2016-11-25 application/pdf https://hdl.handle.net/1983/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 https://research-information.bris.ac.uk/en/publications/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 https://doi.org/10.1016/j.dsr2.2016.11.010 https://research-information.bris.ac.uk/ws/files/81910570/LTER_paper_to_re_submit_to_DSR_9thAug_16.pdf https://research-information.bris.ac.uk/ws/files/81910569/Coastal_Barium_Cycling_Equations_Tables_Figures.pdf eng eng https://research-information.bris.ac.uk/en/publications/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 info:eu-repo/semantics/openAccess Pyle , K M , Hendry , K , Sherrell , R , Meredith , M , Venables , H J , Lagerstrom , M & Morte-Rodenas , A 2016 , ' Coastal barium cycling at the West Antarctic Peninsula ' , Deep Sea Research Part II: Topical Studies in Oceanography . https://doi.org/10.1016/j.dsr2.2016.11.010 Barium seawater polar waters trace metal Antarctica West Antarctic Peninsula Pal LTER grid article 2016 ftubristolcris https://doi.org/10.1016/j.dsr2.2016.11.010 2024-04-30T23:42:49Z Barium cycling in the ocean is associated with a number of processes, including the production and recycling of organic matter, freshwater fluxes, and phenomena that affect alkalinity. As a result, the biogeochemical cycle of barium offers insights into past and present oceanic conditions, with barium currently used in various forms as a palaeoproxy for components of organic and inorganic carbon storage, and as a quasi-conservative water mass tracer. However, the nature of the oceanic barium cycle is not fully understood, particularly in cases where multiple processes may be interacting simultaneously with the dissolved and particulate barium pools. This is particularly the case in coastal polar regions such as the West Antarctic Peninsula, where biological drawdown and remineralisation occur in tandem with sea ice formation and melting, glacial meltwater input, and potential fluxes from shelf sediments. Here, we use a high-precision dataset of dissolved barium (Ba d ) from a grid of stations adjacent to the West Antarctic Peninsula in conjunction with silicic acid (Si(OH) 4 ), the oxygen isotope composition of water, and salinity measurements, to determine the relative control of various coastal processes on the barium cycle throughout the water column. There is a strong correlation between Ba d and Si(OH) 4 present in deeper samples, but nevertheless persists significantly in surface waters. This indicates that the link between biogenic opal and barium is not solely due to barite precipitation and dissolution at depth, but is supplemented by an association between Ba d and diatom tests in surface waters, possibly due to barite formation within diatom-dominated phytodetritus present in the photic zone. Sea ice meltwater appears to exert a significant secondary control on barium concentrations, likely due to non-conservative biotic or abiotic processes acting as a sink for Bad within the sea ice itself, or sea ice meltwater stimulating non-siliceous productivity that acts as a Ba d sink. Meteoric water input, ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice University of Bristol: Bristol Research Deep Sea Research Part II: Topical Studies in Oceanography 139 120 131 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Barium seawater polar waters trace metal Antarctica West Antarctic Peninsula Pal LTER grid |
spellingShingle |
Barium seawater polar waters trace metal Antarctica West Antarctic Peninsula Pal LTER grid Pyle, Kimberley M Hendry, Kate Sherrell, Rob Meredith , Michael Venables, Hugh J. Lagerstrom, Maria Morte-Rodenas, Anabel Coastal barium cycling at the West Antarctic Peninsula |
topic_facet |
Barium seawater polar waters trace metal Antarctica West Antarctic Peninsula Pal LTER grid |
description |
Barium cycling in the ocean is associated with a number of processes, including the production and recycling of organic matter, freshwater fluxes, and phenomena that affect alkalinity. As a result, the biogeochemical cycle of barium offers insights into past and present oceanic conditions, with barium currently used in various forms as a palaeoproxy for components of organic and inorganic carbon storage, and as a quasi-conservative water mass tracer. However, the nature of the oceanic barium cycle is not fully understood, particularly in cases where multiple processes may be interacting simultaneously with the dissolved and particulate barium pools. This is particularly the case in coastal polar regions such as the West Antarctic Peninsula, where biological drawdown and remineralisation occur in tandem with sea ice formation and melting, glacial meltwater input, and potential fluxes from shelf sediments. Here, we use a high-precision dataset of dissolved barium (Ba d ) from a grid of stations adjacent to the West Antarctic Peninsula in conjunction with silicic acid (Si(OH) 4 ), the oxygen isotope composition of water, and salinity measurements, to determine the relative control of various coastal processes on the barium cycle throughout the water column. There is a strong correlation between Ba d and Si(OH) 4 present in deeper samples, but nevertheless persists significantly in surface waters. This indicates that the link between biogenic opal and barium is not solely due to barite precipitation and dissolution at depth, but is supplemented by an association between Ba d and diatom tests in surface waters, possibly due to barite formation within diatom-dominated phytodetritus present in the photic zone. Sea ice meltwater appears to exert a significant secondary control on barium concentrations, likely due to non-conservative biotic or abiotic processes acting as a sink for Bad within the sea ice itself, or sea ice meltwater stimulating non-siliceous productivity that acts as a Ba d sink. Meteoric water input, ... |
format |
Article in Journal/Newspaper |
author |
Pyle, Kimberley M Hendry, Kate Sherrell, Rob Meredith , Michael Venables, Hugh J. Lagerstrom, Maria Morte-Rodenas, Anabel |
author_facet |
Pyle, Kimberley M Hendry, Kate Sherrell, Rob Meredith , Michael Venables, Hugh J. Lagerstrom, Maria Morte-Rodenas, Anabel |
author_sort |
Pyle, Kimberley M |
title |
Coastal barium cycling at the West Antarctic Peninsula |
title_short |
Coastal barium cycling at the West Antarctic Peninsula |
title_full |
Coastal barium cycling at the West Antarctic Peninsula |
title_fullStr |
Coastal barium cycling at the West Antarctic Peninsula |
title_full_unstemmed |
Coastal barium cycling at the West Antarctic Peninsula |
title_sort |
coastal barium cycling at the west antarctic peninsula |
publishDate |
2016 |
url |
https://hdl.handle.net/1983/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 https://research-information.bris.ac.uk/en/publications/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 https://doi.org/10.1016/j.dsr2.2016.11.010 https://research-information.bris.ac.uk/ws/files/81910570/LTER_paper_to_re_submit_to_DSR_9thAug_16.pdf https://research-information.bris.ac.uk/ws/files/81910569/Coastal_Barium_Cycling_Equations_Tables_Figures.pdf |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice |
op_source |
Pyle , K M , Hendry , K , Sherrell , R , Meredith , M , Venables , H J , Lagerstrom , M & Morte-Rodenas , A 2016 , ' Coastal barium cycling at the West Antarctic Peninsula ' , Deep Sea Research Part II: Topical Studies in Oceanography . https://doi.org/10.1016/j.dsr2.2016.11.010 |
op_relation |
https://research-information.bris.ac.uk/en/publications/9e3f3f10-c432-4b26-8890-7b2c1f4e7229 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.dsr2.2016.11.010 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
139 |
container_start_page |
120 |
op_container_end_page |
131 |
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1799488726987964416 |