Neodymium isotope data from South Pacific sediment cores
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| Auteurs principaux: | , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2016
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| _version_ | 1867168567873503232 |
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| author | Basak, Chandranath Fröllje, Henning Lamy, Frank Gersonde, Rainer Benz, Verena Anderson, Robert F Molina-Kescher, Mario Pahnke, Katharina |
| author_facet | Basak, Chandranath Fröllje, Henning Lamy, Frank Gersonde, Rainer Benz, Verena Anderson, Robert F Molina-Kescher, Mario Pahnke, Katharina |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Stratification of the deep Southern Ocean during the Last Glacial Maximum is thought to have facilitated carbon storage and subsequent release during the deglaciation as stratification broke down, contributing to atmospheric CO2 rise. Here, we present neodymium isotope evidence from deep to abyssal waters in the South Pacific that confirms stratification of the deepwater column during the Last Glacial Maximum. The results indicate a glacial northward expansion of Ross Sea Bottom Water and a Southern Hemisphere climate trigger for the deglacial breakup of deep stratification. It highlights the important role of abyssal waters in sustaining a deep glacial carbon reservoir and Southern Hemisphere climate change as a prerequisite for the destabilization of the water column and hence the deglacial release of sequestered CO2 through upwelling. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_858969 |
| institution | PANGAEA |
| language | en |
| publishDate | 2016 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Neodymium isotope data from South Pacific sediment cores Basak, Chandranath Fröllje, Henning Lamy, Frank Gersonde, Rainer Benz, Verena Anderson, Robert F Molina-Kescher, Mario Pahnke, Katharina AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI Stratification of the deep Southern Ocean during the Last Glacial Maximum is thought to have facilitated carbon storage and subsequent release during the deglaciation as stratification broke down, contributing to atmospheric CO2 rise. Here, we present neodymium isotope evidence from deep to abyssal waters in the South Pacific that confirms stratification of the deepwater column during the Last Glacial Maximum. The results indicate a glacial northward expansion of Ross Sea Bottom Water and a Southern Hemisphere climate trigger for the deglacial breakup of deep stratification. It highlights the important role of abyssal waters in sustaining a deep glacial carbon reservoir and Southern Hemisphere climate change as a prerequisite for the destabilization of the water column and hence the deglacial release of sequestered CO2 through upwelling. |
| title | Neodymium isotope data from South Pacific sediment cores |
| topic | AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
| url | https://doi.org/10.1594/PANGAEA.858969 |