Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography
Climate-driven Oxygen Minimum Zone (OMZ) expansions in the geologic record provide an opportunity to characterize the spatial and temporal scales ofOMZ change. Here we investigate OMZ expansion through the global- scale warming event of the most recent deglaciation (18- 11 ka), an event with clear r...
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ftarchimer:oai:archimer.ifremer.fr:46422 2023-05-15T18:28:16+02:00 Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography Moffitt, Sarah E. Moffitt, Russell A. Sauthoff, Wilson Davis, Catherine V. Hewett, Kathryn Hill, Tessa M. 2015-01 application/pdf https://archimer.ifremer.fr/doc/00353/46422/46151.pdf https://doi.org/10.1371/journal.pone.0115246 https://archimer.ifremer.fr/doc/00353/46422/ eng eng Public Library Science https://archimer.ifremer.fr/doc/00353/46422/46151.pdf doi:10.1371/journal.pone.0115246 https://archimer.ifremer.fr/doc/00353/46422/ 2015 Moffitt et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited info:eu-repo/semantics/openAccess restricted use CC-BY Plos One (1932-6203) (Public Library Science), 2015-01 , Vol. 10 , N. 1 , P. e0115246 text Publication info:eu-repo/semantics/article 2015 ftarchimer https://doi.org/10.1371/journal.pone.0115246 2021-09-23T20:28:51Z Climate-driven Oxygen Minimum Zone (OMZ) expansions in the geologic record provide an opportunity to characterize the spatial and temporal scales ofOMZ change. Here we investigate OMZ expansion through the global- scale warming event of the most recent deglaciation (18- 11 ka), an event with clear relevance to understanding modern anthropogenic climate change. Deglacial marine sediment records were compiled to quantify the vertical extent, intensity, surface area and volume impingements of hypoxic waters upon continental margins. By integrating sediment records (183-2,309 meters below sea level; mbsl) containing one or more geochemical, sedimentary or microfossil oxygenation proxies integrated with analyses of eustatic sea level rise, we reconstruct the timing, depth and intensity of seafloor hypoxia. The maximum vertical OMZ extent during the deglaciation was variable by region: Subarctic Pacific (similar to 600-2,900 mbsl), California Current (similar to 330-1,500 mbsl), Mexico Margin (similar to 330-830 mbsl), and the Humboldt Current and Equatorial Pacific (similar to 110-3,100 mbsl). The timing ofOMZ expansion is regionally coherent but not globally synchronous. Subarctic Pacific and California Current continental margins exhibit tight correlation to the oscillations of Northern Hemisphere deglacial events (Termination IA, Bolling-Allerod, Younger Dryas and Termination IB). Southern regions (Mexico Margin and the Equatorial Pacific and Humboldt Current) exhibit hypoxia expansion prior to Termination IA (similar to 14.7 ka), and no regional oxygenation oscillations. Our analyses provide new evidence for the geographically and vertically extensive expansion of OMZs, and the extreme compression of upper-ocean oxygenated ecosystems during the geologically recent deglaciation. Article in Journal/Newspaper Subarctic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific PLOS ONE 10 1 e0115246 |
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Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
description |
Climate-driven Oxygen Minimum Zone (OMZ) expansions in the geologic record provide an opportunity to characterize the spatial and temporal scales ofOMZ change. Here we investigate OMZ expansion through the global- scale warming event of the most recent deglaciation (18- 11 ka), an event with clear relevance to understanding modern anthropogenic climate change. Deglacial marine sediment records were compiled to quantify the vertical extent, intensity, surface area and volume impingements of hypoxic waters upon continental margins. By integrating sediment records (183-2,309 meters below sea level; mbsl) containing one or more geochemical, sedimentary or microfossil oxygenation proxies integrated with analyses of eustatic sea level rise, we reconstruct the timing, depth and intensity of seafloor hypoxia. The maximum vertical OMZ extent during the deglaciation was variable by region: Subarctic Pacific (similar to 600-2,900 mbsl), California Current (similar to 330-1,500 mbsl), Mexico Margin (similar to 330-830 mbsl), and the Humboldt Current and Equatorial Pacific (similar to 110-3,100 mbsl). The timing ofOMZ expansion is regionally coherent but not globally synchronous. Subarctic Pacific and California Current continental margins exhibit tight correlation to the oscillations of Northern Hemisphere deglacial events (Termination IA, Bolling-Allerod, Younger Dryas and Termination IB). Southern regions (Mexico Margin and the Equatorial Pacific and Humboldt Current) exhibit hypoxia expansion prior to Termination IA (similar to 14.7 ka), and no regional oxygenation oscillations. Our analyses provide new evidence for the geographically and vertically extensive expansion of OMZs, and the extreme compression of upper-ocean oxygenated ecosystems during the geologically recent deglaciation. |
format |
Article in Journal/Newspaper |
author |
Moffitt, Sarah E. Moffitt, Russell A. Sauthoff, Wilson Davis, Catherine V. Hewett, Kathryn Hill, Tessa M. |
spellingShingle |
Moffitt, Sarah E. Moffitt, Russell A. Sauthoff, Wilson Davis, Catherine V. Hewett, Kathryn Hill, Tessa M. Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography |
author_facet |
Moffitt, Sarah E. Moffitt, Russell A. Sauthoff, Wilson Davis, Catherine V. Hewett, Kathryn Hill, Tessa M. |
author_sort |
Moffitt, Sarah E. |
title |
Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography |
title_short |
Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography |
title_full |
Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography |
title_fullStr |
Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography |
title_full_unstemmed |
Paleoceanographic Insights on Recent Oxygen Minimum Zone Expansion: Lessons for Modern Oceanography |
title_sort |
paleoceanographic insights on recent oxygen minimum zone expansion: lessons for modern oceanography |
publisher |
Public Library Science |
publishDate |
2015 |
url |
https://archimer.ifremer.fr/doc/00353/46422/46151.pdf https://doi.org/10.1371/journal.pone.0115246 https://archimer.ifremer.fr/doc/00353/46422/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Plos One (1932-6203) (Public Library Science), 2015-01 , Vol. 10 , N. 1 , P. e0115246 |
op_relation |
https://archimer.ifremer.fr/doc/00353/46422/46151.pdf doi:10.1371/journal.pone.0115246 https://archimer.ifremer.fr/doc/00353/46422/ |
op_rights |
2015 Moffitt et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
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https://doi.org/10.1371/journal.pone.0115246 |
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