Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18
We investigate the seasonal variability in freshwater inputs to the Marguerite Bay region (Western Antarctic Peninsula) using a time series of oxygen isotopes in seawater from samples collected in the upper mixed layer of the ocean during 2002 and 2003. We find that meteoric water, mostly in the for...
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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Pergamon-elsevier science ltd
2008
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Online Access: | https://lirias.kuleuven.be/handle/123456789/260718 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2Fj.dsr2.2007.11.005&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE https://doi.org/10.1016/j.dsr2.2007.11.005 |
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ftunivleuven:oai:lirias.kuleuven.be:123456789/260718 2023-05-15T14:02:22+02:00 Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 Meredith, Michael P Brandon, Mark A Wallace, Margaret I Clarke, Andrew Leng, Melanie J Renfrew, Ian A Van Lipzig, Nicole King, John C 2008 https://lirias.kuleuven.be/handle/123456789/260718 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2Fj.dsr2.2007.11.005&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE https://doi.org/10.1016/j.dsr2.2007.11.005 en eng Pergamon-elsevier science ltd Deep-sea research part ii-topical studies in oceanography vol:55 issue:3-4 pages:309-322 https://lirias.kuleuven.be/handle/123456789/260718 0967-0645 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2Fj.dsr2.2007.11.005&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE doi:10.1016/j.dsr2.2007.11.005 western antarctic peninsula freshwater glacial melt sea ice melt continental-shelf southern-ocean sea-ice climate-change weddell sea west circulation trends atlantic tracers Description (Metadata) only IT article 2008 ftunivleuven https://doi.org/10.1016/j.dsr2.2007.11.005 2017-06-02T19:18:07Z We investigate the seasonal variability in freshwater inputs to the Marguerite Bay region (Western Antarctic Peninsula) using a time series of oxygen isotopes in seawater from samples collected in the upper mixed layer of the ocean during 2002 and 2003. We find that meteoric water, mostly in the form of glacial ice melt, is the dominant freshwater source, accounting for up to 5% of the near-surface,ocean during the austral summer. Sea-ice melt accounts for a much smaller percentage, even during the summer (maximum around 1%). The seasonality in meteoric water input to the ocean (around 2% of the near-surface ocean) is not dissimilar to that of sea-ice melt (around 2% in 2002 and 1% in 2003), contradicting the assumption that sea-ice processes dominate the seasonal evolution of the physical ocean environment close to the Antarctic continent. Three full-depth profiles of oxygen isotopes collected in successive Decembers (2001-2003) indicate that around 4 m of meteoric water is present in the water column at this time of year, and around 1 m of sea-ice formed from this same water column. The predominance of glacial melt is significant, since it is known to be an important factor in the operation of the ecosystem, for example by providing a source of nutrients and modifying the physical environment to control the spatial extent and magnitude of phytoplankton blooms. status: published Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean Weddell Sea KU Leuven: Lirias Antarctic Antarctic Peninsula Austral Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Southern Ocean The Antarctic Weddell Weddell Sea Deep Sea Research Part II: Topical Studies in Oceanography 55 3-4 309 322 |
institution |
Open Polar |
collection |
KU Leuven: Lirias |
op_collection_id |
ftunivleuven |
language |
English |
topic |
western antarctic peninsula freshwater glacial melt sea ice melt continental-shelf southern-ocean sea-ice climate-change weddell sea west circulation trends atlantic tracers |
spellingShingle |
western antarctic peninsula freshwater glacial melt sea ice melt continental-shelf southern-ocean sea-ice climate-change weddell sea west circulation trends atlantic tracers Meredith, Michael P Brandon, Mark A Wallace, Margaret I Clarke, Andrew Leng, Melanie J Renfrew, Ian A Van Lipzig, Nicole King, John C Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 |
topic_facet |
western antarctic peninsula freshwater glacial melt sea ice melt continental-shelf southern-ocean sea-ice climate-change weddell sea west circulation trends atlantic tracers |
description |
We investigate the seasonal variability in freshwater inputs to the Marguerite Bay region (Western Antarctic Peninsula) using a time series of oxygen isotopes in seawater from samples collected in the upper mixed layer of the ocean during 2002 and 2003. We find that meteoric water, mostly in the form of glacial ice melt, is the dominant freshwater source, accounting for up to 5% of the near-surface,ocean during the austral summer. Sea-ice melt accounts for a much smaller percentage, even during the summer (maximum around 1%). The seasonality in meteoric water input to the ocean (around 2% of the near-surface ocean) is not dissimilar to that of sea-ice melt (around 2% in 2002 and 1% in 2003), contradicting the assumption that sea-ice processes dominate the seasonal evolution of the physical ocean environment close to the Antarctic continent. Three full-depth profiles of oxygen isotopes collected in successive Decembers (2001-2003) indicate that around 4 m of meteoric water is present in the water column at this time of year, and around 1 m of sea-ice formed from this same water column. The predominance of glacial melt is significant, since it is known to be an important factor in the operation of the ecosystem, for example by providing a source of nutrients and modifying the physical environment to control the spatial extent and magnitude of phytoplankton blooms. status: published |
format |
Article in Journal/Newspaper |
author |
Meredith, Michael P Brandon, Mark A Wallace, Margaret I Clarke, Andrew Leng, Melanie J Renfrew, Ian A Van Lipzig, Nicole King, John C |
author_facet |
Meredith, Michael P Brandon, Mark A Wallace, Margaret I Clarke, Andrew Leng, Melanie J Renfrew, Ian A Van Lipzig, Nicole King, John C |
author_sort |
Meredith, Michael P |
title |
Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 |
title_short |
Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 |
title_full |
Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 |
title_fullStr |
Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 |
title_full_unstemmed |
Variability in the freshwater balance of northern Marguerite Bay, Antarctic Peninsula: Results from delta O-18 |
title_sort |
variability in the freshwater balance of northern marguerite bay, antarctic peninsula: results from delta o-18 |
publisher |
Pergamon-elsevier science ltd |
publishDate |
2008 |
url |
https://lirias.kuleuven.be/handle/123456789/260718 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2Fj.dsr2.2007.11.005&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE https://doi.org/10.1016/j.dsr2.2007.11.005 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay Southern Ocean The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay Southern Ocean The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean Weddell Sea |
op_relation |
Deep-sea research part ii-topical studies in oceanography vol:55 issue:3-4 pages:309-322 https://lirias.kuleuven.be/handle/123456789/260718 0967-0645 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2Fj.dsr2.2007.11.005&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE doi:10.1016/j.dsr2.2007.11.005 |
op_doi |
https://doi.org/10.1016/j.dsr2.2007.11.005 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
55 |
container_issue |
3-4 |
container_start_page |
309 |
op_container_end_page |
322 |
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1766272601533972480 |