Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses
The present essay contributes to the existing literature on rare earth elements (REEs) in the southern hemisphere by presenting the first data, to our knowledge, on the vertical profiles of dissolved REEs in 71 samples collected in the central-western sector of the Ross Sea (Southern Ocean-SO). The...
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Online Access: | http://hdl.handle.net/10278/3687693 https://doi.org/10.1016/j.chemosphere.2017.05.142 |
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ftuniveneziairis:oai:iris.unive.it:10278/3687693 2024-04-14T08:04:30+00:00 Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses TURETTA, Clara BARBARO, ELENA CAPODAGLIO, Gabriele BARBANTE, Carlo Turetta, Clara Barbaro, Elena Capodaglio, Gabriele Barbante, Carlo 2017 STAMPA http://hdl.handle.net/10278/3687693 https://doi.org/10.1016/j.chemosphere.2017.05.142 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000404196400049 volume:183 firstpage:444 lastpage:453 numberofpages:10 journal:CHEMOSPHERE http://hdl.handle.net/10278/3687693 doi:10.1016/j.chemosphere.2017.05.142 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85019770100 info:eu-repo/semantics/openAccess Rare earth element Ross Sea Southern Ocean ocean circulation Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2017 ftuniveneziairis https://doi.org/10.1016/j.chemosphere.2017.05.142 2024-03-21T18:13:58Z The present essay contributes to the existing literature on rare earth elements (REEs) in the southern hemisphere by presenting the first data, to our knowledge, on the vertical profiles of dissolved REEs in 71 samples collected in the central-western sector of the Ross Sea (Southern Ocean-SO). The REEs were measured in the water samples collected during the 2002-2003 and 2005-2006 austral summers. 4 samples were collected and analysed in the framework of a test experiment, as part of the WISSARD Project (Whillans Ice Stream Subglacial Access Research Drilling). Our results show significant differences between the REE patterns of the main water masses present in the SO: we could observe specific signature in the High Salinity Shelf Water (HSSW), Ice Shelf Water (ISW) and Low Salinity Shelf Water (LSSW). A significant increase in Terbium (Tb) concentration was observed in the HSSW and ISW, the two principal water masses contributing to the formation of Antarctic Bottom Water (AABW) in the Ross Sea area, and in LSSW. Some of the HSSW samples show enrichment in Neodymium (Nd). Dissolved REE could therefore be used as tracers to understand the deep circulation of the SO (Pacific sector).We hypothesise that: (I) the characteristic dissolved REE pattern may derive from the composition of source area and from the hydrothermal activity of the central-western area of the Ross Sea; (II) the Tb anomaly observed in the AABW on the South Australian platform could be partially explained by the contribution of AABW generated in the Ross Sea region. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ross Sea Southern Ocean Whillans Ice Stream Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic Southern Ocean Austral Ross Sea Pacific Whillans ENVELOPE(-64.250,-64.250,-84.450,-84.450) Whillans Ice Stream ENVELOPE(-145.000,-145.000,-83.667,-83.667) Chemosphere 183 444 453 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Rare earth element Ross Sea Southern Ocean ocean circulation Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Rare earth element Ross Sea Southern Ocean ocean circulation Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia TURETTA, Clara BARBARO, ELENA CAPODAGLIO, Gabriele BARBANTE, Carlo Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses |
topic_facet |
Rare earth element Ross Sea Southern Ocean ocean circulation Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia |
description |
The present essay contributes to the existing literature on rare earth elements (REEs) in the southern hemisphere by presenting the first data, to our knowledge, on the vertical profiles of dissolved REEs in 71 samples collected in the central-western sector of the Ross Sea (Southern Ocean-SO). The REEs were measured in the water samples collected during the 2002-2003 and 2005-2006 austral summers. 4 samples were collected and analysed in the framework of a test experiment, as part of the WISSARD Project (Whillans Ice Stream Subglacial Access Research Drilling). Our results show significant differences between the REE patterns of the main water masses present in the SO: we could observe specific signature in the High Salinity Shelf Water (HSSW), Ice Shelf Water (ISW) and Low Salinity Shelf Water (LSSW). A significant increase in Terbium (Tb) concentration was observed in the HSSW and ISW, the two principal water masses contributing to the formation of Antarctic Bottom Water (AABW) in the Ross Sea area, and in LSSW. Some of the HSSW samples show enrichment in Neodymium (Nd). Dissolved REE could therefore be used as tracers to understand the deep circulation of the SO (Pacific sector).We hypothesise that: (I) the characteristic dissolved REE pattern may derive from the composition of source area and from the hydrothermal activity of the central-western area of the Ross Sea; (II) the Tb anomaly observed in the AABW on the South Australian platform could be partially explained by the contribution of AABW generated in the Ross Sea region. |
author2 |
Turetta, Clara Barbaro, Elena Capodaglio, Gabriele Barbante, Carlo |
format |
Article in Journal/Newspaper |
author |
TURETTA, Clara BARBARO, ELENA CAPODAGLIO, Gabriele BARBANTE, Carlo |
author_facet |
TURETTA, Clara BARBARO, ELENA CAPODAGLIO, Gabriele BARBANTE, Carlo |
author_sort |
TURETTA, Clara |
title |
Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses |
title_short |
Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses |
title_full |
Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses |
title_fullStr |
Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses |
title_full_unstemmed |
Dissolved Rare Earth Elements in the central-western sector of the Ross Sea, Southern Ocean: geochemical tracing of seawater masses |
title_sort |
dissolved rare earth elements in the central-western sector of the ross sea, southern ocean: geochemical tracing of seawater masses |
publishDate |
2017 |
url |
http://hdl.handle.net/10278/3687693 https://doi.org/10.1016/j.chemosphere.2017.05.142 |
long_lat |
ENVELOPE(-64.250,-64.250,-84.450,-84.450) ENVELOPE(-145.000,-145.000,-83.667,-83.667) |
geographic |
Antarctic Southern Ocean Austral Ross Sea Pacific Whillans Whillans Ice Stream |
geographic_facet |
Antarctic Southern Ocean Austral Ross Sea Pacific Whillans Whillans Ice Stream |
genre |
Antarc* Antarctic Ice Shelf Ross Sea Southern Ocean Whillans Ice Stream |
genre_facet |
Antarc* Antarctic Ice Shelf Ross Sea Southern Ocean Whillans Ice Stream |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000404196400049 volume:183 firstpage:444 lastpage:453 numberofpages:10 journal:CHEMOSPHERE http://hdl.handle.net/10278/3687693 doi:10.1016/j.chemosphere.2017.05.142 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85019770100 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2017.05.142 |
container_title |
Chemosphere |
container_volume |
183 |
container_start_page |
444 |
op_container_end_page |
453 |
_version_ |
1796301056227934208 |