Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica)
The distribution of particulate Fe (pFe), suspended particulate matter (SPM), and other particulate trace metals were investigated in Terra Nova Bay as part of CDW Effects on glaciaL mElting and on Bulk of Fe in the Western Ross sea (CELEBeR) and Plankton biodiversity and functioning of the Ross Sea...
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Online Access: | http://hdl.handle.net/11567/1033708 https://doi.org/10.3390/w12123517 |
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ftunivgenova:oai:iris.unige.it:11567/1033708 2024-02-11T09:56:25+01:00 Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) Rivaro, Paola Ardini, Francisco Vivado, Davide Cabella, Roberto Castagno, Pasquale Mangoni, Olga Falco, Pierpaolo Rivaro, Paola Ardini, Francisco Vivado, Davide Cabella, Roberto Castagno, Pasquale Mangoni, Olga Falco, Pierpaolo 2020 ELETTRONICO http://hdl.handle.net/11567/1033708 https://doi.org/10.3390/w12123517 eng eng MDPI info:eu-repo/semantics/altIdentifier/wos/WOS:000602842600001 volume:12 (12) firstpage:3517 lastpage:3535 numberofpages:19 journal:WATER http://hdl.handle.net/11567/1033708 doi:10.3390/w12123517 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85098204827 info:eu-repo/semantics/openAccess iron suspended particulate matter antarctica ross sea info:eu-repo/semantics/article 2020 ftunivgenova https://doi.org/10.3390/w12123517 2024-01-17T18:03:31Z The distribution of particulate Fe (pFe), suspended particulate matter (SPM), and other particulate trace metals were investigated in Terra Nova Bay as part of CDW Effects on glaciaL mElting and on Bulk of Fe in the Western Ross sea (CELEBeR) and Plankton biodiversity and functioning of the Ross Sea ecosystems in a changing Southern Ocean (P-ROSE) projects. Variable concentrations of SPM (0.09–97 mg L−1), pFe (0.51–8.70 nM) and other trace metals were found in the Antarctic Surface waters (AASW) layer, where the addition of meltwater contributed to the pool with both lithogenic and biogenic forms. The deeper layer of the water column was occupied by High Salinity Shelf Water (HSSW) and Terra Nova Bay Ice Shelf Water (TISW) encompassing glacial water as confirmed by the lightest δ18O measured values. The concentration of pFe in TISW (11.7 ± 9.2 nM) was higher than in HSSW samples (5.55 ± 4.43 nM), suggesting that the drainage of material released from glaciers surrounding the area is relevant in terms of pFe contribution. Particulate Fe/Al and Mn/Al ratios were substantially in excess compared with the mean crustal ratios. Microscopic analyses confirmed that more labile Fe oxyhydroxides and authigenic MnO2 phases were present together with biogenic sinking material. Future expected increasing melt rates of these glaciers enlarge Fe input, thus having a greater role in supplying iron and counteracting the reductions in sea ice cover around Terra Nova Bay. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Shelf Ross Sea Sea ice Southern Ocean Università degli Studi di Genova: CINECA IRIS Antarctic Ross Sea Southern Ocean Terra Nova Bay The Antarctic Water 12 12 3517 |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
topic |
iron suspended particulate matter antarctica ross sea |
spellingShingle |
iron suspended particulate matter antarctica ross sea Rivaro, Paola Ardini, Francisco Vivado, Davide Cabella, Roberto Castagno, Pasquale Mangoni, Olga Falco, Pierpaolo Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) |
topic_facet |
iron suspended particulate matter antarctica ross sea |
description |
The distribution of particulate Fe (pFe), suspended particulate matter (SPM), and other particulate trace metals were investigated in Terra Nova Bay as part of CDW Effects on glaciaL mElting and on Bulk of Fe in the Western Ross sea (CELEBeR) and Plankton biodiversity and functioning of the Ross Sea ecosystems in a changing Southern Ocean (P-ROSE) projects. Variable concentrations of SPM (0.09–97 mg L−1), pFe (0.51–8.70 nM) and other trace metals were found in the Antarctic Surface waters (AASW) layer, where the addition of meltwater contributed to the pool with both lithogenic and biogenic forms. The deeper layer of the water column was occupied by High Salinity Shelf Water (HSSW) and Terra Nova Bay Ice Shelf Water (TISW) encompassing glacial water as confirmed by the lightest δ18O measured values. The concentration of pFe in TISW (11.7 ± 9.2 nM) was higher than in HSSW samples (5.55 ± 4.43 nM), suggesting that the drainage of material released from glaciers surrounding the area is relevant in terms of pFe contribution. Particulate Fe/Al and Mn/Al ratios were substantially in excess compared with the mean crustal ratios. Microscopic analyses confirmed that more labile Fe oxyhydroxides and authigenic MnO2 phases were present together with biogenic sinking material. Future expected increasing melt rates of these glaciers enlarge Fe input, thus having a greater role in supplying iron and counteracting the reductions in sea ice cover around Terra Nova Bay. |
author2 |
Rivaro, Paola Ardini, Francisco Vivado, Davide Cabella, Roberto Castagno, Pasquale Mangoni, Olga Falco, Pierpaolo |
format |
Article in Journal/Newspaper |
author |
Rivaro, Paola Ardini, Francisco Vivado, Davide Cabella, Roberto Castagno, Pasquale Mangoni, Olga Falco, Pierpaolo |
author_facet |
Rivaro, Paola Ardini, Francisco Vivado, Davide Cabella, Roberto Castagno, Pasquale Mangoni, Olga Falco, Pierpaolo |
author_sort |
Rivaro, Paola |
title |
Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) |
title_short |
Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) |
title_full |
Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) |
title_fullStr |
Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) |
title_full_unstemmed |
Potential Sources of Particulate Iron in Surface and Deep Waters of the Terra Nova Bay (Ross Sea, Antarctica) |
title_sort |
potential sources of particulate iron in surface and deep waters of the terra nova bay (ross sea, antarctica) |
publisher |
MDPI |
publishDate |
2020 |
url |
http://hdl.handle.net/11567/1033708 https://doi.org/10.3390/w12123517 |
geographic |
Antarctic Ross Sea Southern Ocean Terra Nova Bay The Antarctic |
geographic_facet |
Antarctic Ross Sea Southern Ocean Terra Nova Bay The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ross Sea Sea ice Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000602842600001 volume:12 (12) firstpage:3517 lastpage:3535 numberofpages:19 journal:WATER http://hdl.handle.net/11567/1033708 doi:10.3390/w12123517 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85098204827 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/w12123517 |
container_title |
Water |
container_volume |
12 |
container_issue |
12 |
container_start_page |
3517 |
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1790602964044349440 |