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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Format: | Article in Journal/Newspaper |
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Elsevier
2017
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Online Access: | http://nora.nerc.ac.uk/id/eprint/513163/ https://nora.nerc.ac.uk/id/eprint/513163/1/Coastal%20barium%20cycling%20at%20the%20West%20Antarctic%20Peninsula%20AAM.pdf https://nora.nerc.ac.uk/id/eprint/513163/7/Pyle%20DSR2%20barium%20WAP%202017.pdf http://www.sciencedirect.com/science/article/pii/S0967064516303617 |
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ftnerc:oai:nora.nerc.ac.uk:513163 2023-05-15T13:49:32+02:00 Coastal barium cycling at the West Antarctic Peninsula Pyle, K.M. Hendry, K.R. Sherrell, R.M. Meredith, M.P. Venables, H. Lagerstrom, M. Morte-Rodenas, A. 2017-05 text http://nora.nerc.ac.uk/id/eprint/513163/ https://nora.nerc.ac.uk/id/eprint/513163/1/Coastal%20barium%20cycling%20at%20the%20West%20Antarctic%20Peninsula%20AAM.pdf https://nora.nerc.ac.uk/id/eprint/513163/7/Pyle%20DSR2%20barium%20WAP%202017.pdf http://www.sciencedirect.com/science/article/pii/S0967064516303617 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/513163/1/Coastal%20barium%20cycling%20at%20the%20West%20Antarctic%20Peninsula%20AAM.pdf https://nora.nerc.ac.uk/id/eprint/513163/7/Pyle%20DSR2%20barium%20WAP%202017.pdf Pyle, K.M.; Hendry, K.R.; Sherrell, R.M.; Meredith, M.P. orcid:0000-0002-7342-7756 Venables, H.; Lagerstrom, M.; Morte-Rodenas, A. 2017 Coastal barium cycling at the West Antarctic Peninsula. Deep Sea Research II: Topical Studies in Oceanography, 139. 120-131. https://doi.org/10.1016/j.dsr2.2016.11.010 <https://doi.org/10.1016/j.dsr2.2016.11.010> Marine Sciences Chemistry Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1016/j.dsr2.2016.11.010 2023-02-04T19:42:47Z 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 (Bad) 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 Bad 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 Bad 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 Bad sink. Meteoric water input, ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Deep Sea Research Part II: Topical Studies in Oceanography 139 120 131 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Chemistry |
spellingShingle |
Marine Sciences Chemistry Pyle, K.M. Hendry, K.R. Sherrell, R.M. Meredith, M.P. Venables, H. Lagerstrom, M. Morte-Rodenas, A. Coastal barium cycling at the West Antarctic Peninsula |
topic_facet |
Marine Sciences Chemistry |
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 (Bad) 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 Bad 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 Bad 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 Bad sink. Meteoric water input, ... |
format |
Article in Journal/Newspaper |
author |
Pyle, K.M. Hendry, K.R. Sherrell, R.M. Meredith, M.P. Venables, H. Lagerstrom, M. Morte-Rodenas, A. |
author_facet |
Pyle, K.M. Hendry, K.R. Sherrell, R.M. Meredith, M.P. Venables, H. Lagerstrom, M. Morte-Rodenas, A. |
author_sort |
Pyle, K.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 |
publisher |
Elsevier |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/513163/ https://nora.nerc.ac.uk/id/eprint/513163/1/Coastal%20barium%20cycling%20at%20the%20West%20Antarctic%20Peninsula%20AAM.pdf https://nora.nerc.ac.uk/id/eprint/513163/7/Pyle%20DSR2%20barium%20WAP%202017.pdf http://www.sciencedirect.com/science/article/pii/S0967064516303617 |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/513163/1/Coastal%20barium%20cycling%20at%20the%20West%20Antarctic%20Peninsula%20AAM.pdf https://nora.nerc.ac.uk/id/eprint/513163/7/Pyle%20DSR2%20barium%20WAP%202017.pdf Pyle, K.M.; Hendry, K.R.; Sherrell, R.M.; Meredith, M.P. orcid:0000-0002-7342-7756 Venables, H.; Lagerstrom, M.; Morte-Rodenas, A. 2017 Coastal barium cycling at the West Antarctic Peninsula. Deep Sea Research II: Topical Studies in Oceanography, 139. 120-131. https://doi.org/10.1016/j.dsr2.2016.11.010 <https://doi.org/10.1016/j.dsr2.2016.11.010> |
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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1766251524801953792 |