The role of tides in bottom water export from the western Ross Sea

Abstract Approximately 25% of Antarctic Bottom Water has its origin as dense water exiting the western Ross Sea, but little is known about what controls the release of dense water plumes from the Drygalski Trough. We deployed two moorings on the slope to investigate the water properties of the botto...

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Autores principales:	Melissa M. Bowen, Denise Fernandez, Aitana Forcen-Vazquez, Arnold L. Gordon, Bruce Huber, Pasquale Castagno, Pierpaolo Falco
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c7361873de2d42ecae89c2bdd6ac4586
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spelling	oai:doaj.org-article:c7361873de2d42ecae89c2bdd6ac45862021-12-02T13:24:07ZThe role of tides in bottom water export from the western Ross Sea10.1038/s41598-021-81793-52045-2322https://doaj.org/article/c7361873de2d42ecae89c2bdd6ac45862021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81793-5https://doaj.org/toc/2045-2322Abstract Approximately 25% of Antarctic Bottom Water has its origin as dense water exiting the western Ross Sea, but little is known about what controls the release of dense water plumes from the Drygalski Trough. We deployed two moorings on the slope to investigate the water properties of the bottom water exiting the region at Cape Adare. Salinity of the bottom water has increased in 2018 from the previous measurements in 2008–2010, consistent with the observed salinity increase in the Ross Sea. We find High Salinity Shelf Water from the Drygalski Trough contributes to two pulses of dense water at Cape Adare. The timing and magnitude of the pulses is largely explained by an inverse relationship with the tidal velocity in the Ross Sea. We suggest that the diurnal and low frequency tides in the western Ross Sea may control the magnitude and timing of the dense water outflow.Melissa M. BowenDenise FernandezAitana Forcen-VazquezArnold L. GordonBruce HuberPasquale CastagnoPierpaolo FalcoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Melissa M. Bowen Denise Fernandez Aitana Forcen-Vazquez Arnold L. Gordon Bruce Huber Pasquale Castagno Pierpaolo Falco The role of tides in bottom water export from the western Ross Sea
description	Abstract Approximately 25% of Antarctic Bottom Water has its origin as dense water exiting the western Ross Sea, but little is known about what controls the release of dense water plumes from the Drygalski Trough. We deployed two moorings on the slope to investigate the water properties of the bottom water exiting the region at Cape Adare. Salinity of the bottom water has increased in 2018 from the previous measurements in 2008–2010, consistent with the observed salinity increase in the Ross Sea. We find High Salinity Shelf Water from the Drygalski Trough contributes to two pulses of dense water at Cape Adare. The timing and magnitude of the pulses is largely explained by an inverse relationship with the tidal velocity in the Ross Sea. We suggest that the diurnal and low frequency tides in the western Ross Sea may control the magnitude and timing of the dense water outflow.
format	article
author	Melissa M. Bowen Denise Fernandez Aitana Forcen-Vazquez Arnold L. Gordon Bruce Huber Pasquale Castagno Pierpaolo Falco
author_facet	Melissa M. Bowen Denise Fernandez Aitana Forcen-Vazquez Arnold L. Gordon Bruce Huber Pasquale Castagno Pierpaolo Falco
author_sort	Melissa M. Bowen
title	The role of tides in bottom water export from the western Ross Sea
title_short	The role of tides in bottom water export from the western Ross Sea
title_full	The role of tides in bottom water export from the western Ross Sea
title_fullStr	The role of tides in bottom water export from the western Ross Sea
title_full_unstemmed	The role of tides in bottom water export from the western Ross Sea
title_sort	role of tides in bottom water export from the western ross sea
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c7361873de2d42ecae89c2bdd6ac4586
work_keys_str_mv	AT melissambowen theroleoftidesinbottomwaterexportfromthewesternrosssea AT denisefernandez theroleoftidesinbottomwaterexportfromthewesternrosssea AT aitanaforcenvazquez theroleoftidesinbottomwaterexportfromthewesternrosssea AT arnoldlgordon theroleoftidesinbottomwaterexportfromthewesternrosssea AT brucehuber theroleoftidesinbottomwaterexportfromthewesternrosssea AT pasqualecastagno theroleoftidesinbottomwaterexportfromthewesternrosssea AT pierpaolofalco theroleoftidesinbottomwaterexportfromthewesternrosssea AT melissambowen roleoftidesinbottomwaterexportfromthewesternrosssea AT denisefernandez roleoftidesinbottomwaterexportfromthewesternrosssea AT aitanaforcenvazquez roleoftidesinbottomwaterexportfromthewesternrosssea AT arnoldlgordon roleoftidesinbottomwaterexportfromthewesternrosssea AT brucehuber roleoftidesinbottomwaterexportfromthewesternrosssea AT pasqualecastagno roleoftidesinbottomwaterexportfromthewesternrosssea AT pierpaolofalco roleoftidesinbottomwaterexportfromthewesternrosssea
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The role of tides in bottom water export from the western Ross Sea

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