Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003
Data from three Italian CLIMA project cruises between 1997 and 2003 were used to obtain sections of the hydrographic and chemical properties of the main water masses across the shelf break off Cape Adare (western Ross Sea, Antarctica). Dissolved oxygen, nitrate and phosphate data were combined on th...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | https://hdl.handle.net/11570/3299800 https://doi.org/10.1016/j.dsr.2010.03.005 https://www.sciencedirect.com/science/article/pii/S0967063710000476?via=ihub |
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ftunimessinairis:oai:iris.unime.it:11570/3299800 2024-06-23T07:46:43+00:00 Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 Rivaro P. Massolo S. Bergamasco A. Castagno P. Budillon G. Rivaro, P. Massolo, S. Bergamasco, A. Castagno, P. Budillon, G. 2010 ELETTRONICO https://hdl.handle.net/11570/3299800 https://doi.org/10.1016/j.dsr.2010.03.005 https://www.sciencedirect.com/science/article/pii/S0967063710000476?via=ihub eng eng PERGAMON-ELSEVIER SCIENCE LTD info:eu-repo/semantics/altIdentifier/wos/WOS:000278195500001 volume:57 issue:5 firstpage:639 lastpage:652 numberofpages:14 journal:DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS https://hdl.handle.net/11570/3299800 doi:10.1016/j.dsr.2010.03.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77951173210 https://www.sciencedirect.com/science/article/pii/S0967063710000476?via=ihub Antarctic Bottom Water Dissolved oxygen NO PO 4 * Ross Sea info:eu-repo/semantics/article 2010 ftunimessinairis https://doi.org/10.1016/j.dsr.2010.03.005 2024-06-10T23:38:54Z Data from three Italian CLIMA project cruises between 1997 and 2003 were used to obtain sections of the hydrographic and chemical properties of the main water masses across the shelf break off Cape Adare (western Ross Sea, Antarctica). Dissolved oxygen, nitrate and phosphate data were combined on the basis of the Redfield ratio to obtain the quasi-conservative tracers NO (9[NO3]+[O2]), PO (135[PO4]+[O2]) and phosphate star PO4* (PO4*= [PO4]+[O2]/175-1.95). In 1997 and 2003 the presence of the High Salinity Shelf Water at the bottom depth near the sill was traced by both physical and chemical measurements. In 2001 the Modified Shelf Water, characterized by warmer temperature and by a lower dissolved oxygen content than High Salinity Shelf Water, was observed at the shelf edge. The distribution of the chemical tracers together with the hydrographic observations showed recently formed Antarctic Bottom Water on the continental slope during all of the cruises. These observations were confirmed by the extended optimum multiparameter analysis. The calculated thickness of the new Antarctic Bottom Water, as well as the tracer content, were variable in time and in space. The estimated volume of the new Antarctic Bottom Water and the export of dissolved oxygen and nutrient associated with the overflowing water were different over the examined period. In particular, a lower (∼55%) export was evidenced in 2001 compared to 1997. © 2010 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Università degli Studi di Messina: IRIS Antarctic The Antarctic Ross Sea Adare ENVELOPE(170.233,170.233,-71.283,-71.283) Cape Adare ENVELOPE(175.000,175.000,-71.000,-71.000) Deep Sea Research Part I: Oceanographic Research Papers 57 5 639 652 |
institution |
Open Polar |
collection |
Università degli Studi di Messina: IRIS |
op_collection_id |
ftunimessinairis |
language |
English |
topic |
Antarctic Bottom Water Dissolved oxygen NO PO 4 * Ross Sea |
spellingShingle |
Antarctic Bottom Water Dissolved oxygen NO PO 4 * Ross Sea Rivaro P. Massolo S. Bergamasco A. Castagno P. Budillon G. Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 |
topic_facet |
Antarctic Bottom Water Dissolved oxygen NO PO 4 * Ross Sea |
description |
Data from three Italian CLIMA project cruises between 1997 and 2003 were used to obtain sections of the hydrographic and chemical properties of the main water masses across the shelf break off Cape Adare (western Ross Sea, Antarctica). Dissolved oxygen, nitrate and phosphate data were combined on the basis of the Redfield ratio to obtain the quasi-conservative tracers NO (9[NO3]+[O2]), PO (135[PO4]+[O2]) and phosphate star PO4* (PO4*= [PO4]+[O2]/175-1.95). In 1997 and 2003 the presence of the High Salinity Shelf Water at the bottom depth near the sill was traced by both physical and chemical measurements. In 2001 the Modified Shelf Water, characterized by warmer temperature and by a lower dissolved oxygen content than High Salinity Shelf Water, was observed at the shelf edge. The distribution of the chemical tracers together with the hydrographic observations showed recently formed Antarctic Bottom Water on the continental slope during all of the cruises. These observations were confirmed by the extended optimum multiparameter analysis. The calculated thickness of the new Antarctic Bottom Water, as well as the tracer content, were variable in time and in space. The estimated volume of the new Antarctic Bottom Water and the export of dissolved oxygen and nutrient associated with the overflowing water were different over the examined period. In particular, a lower (∼55%) export was evidenced in 2001 compared to 1997. © 2010 Elsevier Ltd. All rights reserved. |
author2 |
Rivaro, P. Massolo, S. Bergamasco, A. Castagno, P. Budillon, G. |
format |
Article in Journal/Newspaper |
author |
Rivaro P. Massolo S. Bergamasco A. Castagno P. Budillon G. |
author_facet |
Rivaro P. Massolo S. Bergamasco A. Castagno P. Budillon G. |
author_sort |
Rivaro P. |
title |
Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 |
title_short |
Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 |
title_full |
Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 |
title_fullStr |
Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 |
title_full_unstemmed |
Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003 |
title_sort |
chemical evidence of the changes of the antarctic bottom water ventilation in the western ross sea between 1997 and 2003 |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2010 |
url |
https://hdl.handle.net/11570/3299800 https://doi.org/10.1016/j.dsr.2010.03.005 https://www.sciencedirect.com/science/article/pii/S0967063710000476?via=ihub |
long_lat |
ENVELOPE(170.233,170.233,-71.283,-71.283) ENVELOPE(175.000,175.000,-71.000,-71.000) |
geographic |
Antarctic The Antarctic Ross Sea Adare Cape Adare |
geographic_facet |
Antarctic The Antarctic Ross Sea Adare Cape Adare |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000278195500001 volume:57 issue:5 firstpage:639 lastpage:652 numberofpages:14 journal:DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS https://hdl.handle.net/11570/3299800 doi:10.1016/j.dsr.2010.03.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77951173210 https://www.sciencedirect.com/science/article/pii/S0967063710000476?via=ihub |
op_doi |
https://doi.org/10.1016/j.dsr.2010.03.005 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
57 |
container_issue |
5 |
container_start_page |
639 |
op_container_end_page |
652 |
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