Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice
We have attempted to evaluate the relative importance, compared to other possible sources, of sea ice in supplying Fe to East Antarctic surface ocean waters. Samples of snow, brine, seawater and sea ice were collected and processed for Fe analysis during the "ARISE in the East" Antarctic c...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/156279 https://dipot.ulb.ac.be/dspace/bitstream/2013/156279/1/Elsevier_141212.pdf |
id |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/156279 |
---|---|
record_format |
openpolar |
spelling |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/156279 2023-05-15T13:44:43+02:00 Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice Lannuzel, Delphine Schoemann, Véronique De Jong, Jeroen Tison, Jean-Louis Chou, Lei 2007 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/156279 https://dipot.ulb.ac.be/dspace/bitstream/2013/156279/1/Elsevier_141212.pdf en eng uri/info:doi/10.1016/j.marchem.2006 uri/info:pii/S0304420306001149 uri/info:scp/34547685964 https://dipot.ulb.ac.be/dspace/bitstream/2013/156279/1/Elsevier_141212.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/156279 1 full-text file(s): info:eu-repo/semantics/restrictedAccess Marine chemistry, 106 (1-2 Sciences exactes et naturelles Glaciologie East Antarctica Fe inputs Iron biogeochemistry Sea ice info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2007 ftunivbruxelles 2022-06-12T21:11:27Z We have attempted to evaluate the relative importance, compared to other possible sources, of sea ice in supplying Fe to East Antarctic surface ocean waters. Samples of snow, brine, seawater and sea ice were collected and processed for Fe analysis during the "ARISE in the East" Antarctic cruise during September-October 2003 (64°-65°S/112°-119°E, RV Aurora Australis). Total-dissolvable and dissolved Fe concentrations were measured together with relevant physical, chemical and biological parameters. The most striking feature we observed is that total-dissolvable Fe concentrations in sea ice were up to an order of magnitude higher than those measured in the underlying seawater. Moreover, total-dissolvable Fe in sea ice is more concentrated at cold "winter" type stations than at the warm "spring" ones. This probably results from the enhanced ice permeability as spring arrives, which allows brine drainage within the ice cover and renders exchanges with the water column possible. During the melting period, iron inputs to surface waters from sea ice may represent as much as 70% of the estimated daily total flux into surface seawater when taking into account available data on dust deposition, extraterrestrial iron, vertical diffusion and upwelling. Our results highlight the potentially important contribution of pack ice to the Fe biogeochemical cycle in the East Antarctic oceanic Ecosystem. © 2006 Elsevier B.V. All rights reserved. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Antarctica aurora australis East Antarctica Sea ice DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic East Antarctica |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Sciences exactes et naturelles Glaciologie East Antarctica Fe inputs Iron biogeochemistry Sea ice |
spellingShingle |
Sciences exactes et naturelles Glaciologie East Antarctica Fe inputs Iron biogeochemistry Sea ice Lannuzel, Delphine Schoemann, Véronique De Jong, Jeroen Tison, Jean-Louis Chou, Lei Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice |
topic_facet |
Sciences exactes et naturelles Glaciologie East Antarctica Fe inputs Iron biogeochemistry Sea ice |
description |
We have attempted to evaluate the relative importance, compared to other possible sources, of sea ice in supplying Fe to East Antarctic surface ocean waters. Samples of snow, brine, seawater and sea ice were collected and processed for Fe analysis during the "ARISE in the East" Antarctic cruise during September-October 2003 (64°-65°S/112°-119°E, RV Aurora Australis). Total-dissolvable and dissolved Fe concentrations were measured together with relevant physical, chemical and biological parameters. The most striking feature we observed is that total-dissolvable Fe concentrations in sea ice were up to an order of magnitude higher than those measured in the underlying seawater. Moreover, total-dissolvable Fe in sea ice is more concentrated at cold "winter" type stations than at the warm "spring" ones. This probably results from the enhanced ice permeability as spring arrives, which allows brine drainage within the ice cover and renders exchanges with the water column possible. During the melting period, iron inputs to surface waters from sea ice may represent as much as 70% of the estimated daily total flux into surface seawater when taking into account available data on dust deposition, extraterrestrial iron, vertical diffusion and upwelling. Our results highlight the potentially important contribution of pack ice to the Fe biogeochemical cycle in the East Antarctic oceanic Ecosystem. © 2006 Elsevier B.V. All rights reserved. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Lannuzel, Delphine Schoemann, Véronique De Jong, Jeroen Tison, Jean-Louis Chou, Lei |
author_facet |
Lannuzel, Delphine Schoemann, Véronique De Jong, Jeroen Tison, Jean-Louis Chou, Lei |
author_sort |
Lannuzel, Delphine |
title |
Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice |
title_short |
Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice |
title_full |
Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice |
title_fullStr |
Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice |
title_full_unstemmed |
Distribution and biogeochemical behaviour of iron in the East Antarctic sea ice |
title_sort |
distribution and biogeochemical behaviour of iron in the east antarctic sea ice |
publishDate |
2007 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/156279 https://dipot.ulb.ac.be/dspace/bitstream/2013/156279/1/Elsevier_141212.pdf |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica aurora australis East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica aurora australis East Antarctica Sea ice |
op_source |
Marine chemistry, 106 (1-2 |
op_relation |
uri/info:doi/10.1016/j.marchem.2006 uri/info:pii/S0304420306001149 uri/info:scp/34547685964 https://dipot.ulb.ac.be/dspace/bitstream/2013/156279/1/Elsevier_141212.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/156279 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1766205128210120704 |