Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea
Antarctic Bottom Water (AABW) stores heat and gases over decades to centuries after contact with the atmosphere during formation on the Antarctic shelf and subsequent flow into the global deep ocean. Dense water from the western Ross Sea, a primary source of AABW, shows changes in water properties a...
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ftpubmed:oai:pubmedcentral.nih.gov:9995308 2023-05-15T13:44:28+02:00 Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea Bowen, Melissa M. Fernandez, Denise Gordon, Arnold L. Huber, Bruce Castagno, Pasquale Falco, Pierpaolo Budillon, Giorgio Gunn, Kathryn L. Forcen-Vazquez, Aitana 2023-03-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9995308/ http://www.ncbi.nlm.nih.gov/pubmed/36890202 https://doi.org/10.1038/s41598-023-31008-w en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9995308/ http://www.ncbi.nlm.nih.gov/pubmed/36890202 http://dx.doi.org/10.1038/s41598-023-31008-w © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . Sci Rep Article Text 2023 ftpubmed https://doi.org/10.1038/s41598-023-31008-w 2023-03-12T02:20:31Z Antarctic Bottom Water (AABW) stores heat and gases over decades to centuries after contact with the atmosphere during formation on the Antarctic shelf and subsequent flow into the global deep ocean. Dense water from the western Ross Sea, a primary source of AABW, shows changes in water properties and volume over the last few decades. Here we show, using multiple years of moored observations, that the density and speed of the outflow are consistent with a release from the Drygalski Trough controlled by the density in Terra Nova Bay (the “accelerator”) and the tidal mixing (the “brake”). We suggest tides create two peaks in density and flow each year at the equinoxes and could cause changes of ~ 30% in the flow and density over the 18.6-year lunar nodal tide. Based on our dynamic model, we find tides can explain much of the decadal variability in the outflow with longer-term changes likely driven by the density in Terra Nova Bay. Text Antarc* Antarctic Ross Sea PubMed Central (PMC) Antarctic Drygalski ENVELOPE(-61.000,-61.000,-64.717,-64.717) Ross Sea Terra Nova Bay The Antarctic Scientific Reports 13 1 |
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Article Bowen, Melissa M. Fernandez, Denise Gordon, Arnold L. Huber, Bruce Castagno, Pasquale Falco, Pierpaolo Budillon, Giorgio Gunn, Kathryn L. Forcen-Vazquez, Aitana Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea |
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Antarctic Bottom Water (AABW) stores heat and gases over decades to centuries after contact with the atmosphere during formation on the Antarctic shelf and subsequent flow into the global deep ocean. Dense water from the western Ross Sea, a primary source of AABW, shows changes in water properties and volume over the last few decades. Here we show, using multiple years of moored observations, that the density and speed of the outflow are consistent with a release from the Drygalski Trough controlled by the density in Terra Nova Bay (the “accelerator”) and the tidal mixing (the “brake”). We suggest tides create two peaks in density and flow each year at the equinoxes and could cause changes of ~ 30% in the flow and density over the 18.6-year lunar nodal tide. Based on our dynamic model, we find tides can explain much of the decadal variability in the outflow with longer-term changes likely driven by the density in Terra Nova Bay. |
format |
Text |
author |
Bowen, Melissa M. Fernandez, Denise Gordon, Arnold L. Huber, Bruce Castagno, Pasquale Falco, Pierpaolo Budillon, Giorgio Gunn, Kathryn L. Forcen-Vazquez, Aitana |
author_facet |
Bowen, Melissa M. Fernandez, Denise Gordon, Arnold L. Huber, Bruce Castagno, Pasquale Falco, Pierpaolo Budillon, Giorgio Gunn, Kathryn L. Forcen-Vazquez, Aitana |
author_sort |
Bowen, Melissa M. |
title |
Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea |
title_short |
Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea |
title_full |
Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea |
title_fullStr |
Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea |
title_full_unstemmed |
Tides regulate the flow and density of Antarctic Bottom Water from the western Ross Sea |
title_sort |
tides regulate the flow and density of antarctic bottom water from the western ross sea |
publisher |
Nature Publishing Group UK |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9995308/ http://www.ncbi.nlm.nih.gov/pubmed/36890202 https://doi.org/10.1038/s41598-023-31008-w |
long_lat |
ENVELOPE(-61.000,-61.000,-64.717,-64.717) |
geographic |
Antarctic Drygalski Ross Sea Terra Nova Bay The Antarctic |
geographic_facet |
Antarctic Drygalski Ross Sea Terra Nova Bay The Antarctic |
genre |
Antarc* Antarctic Ross Sea |
genre_facet |
Antarc* Antarctic Ross Sea |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9995308/ http://www.ncbi.nlm.nih.gov/pubmed/36890202 http://dx.doi.org/10.1038/s41598-023-31008-w |
op_rights |
© The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_doi |
https://doi.org/10.1038/s41598-023-31008-w |
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Scientific Reports |
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13 |
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1 |
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1766202083011198976 |