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| Main Authors: | , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2011
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.829499 |
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| _version_ | 1867170970558529536 |
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| author | Hoogakker, Babette A A Chapman, Mark R McCave, I Nicholas Hillaire-Marcel, Claude Ellison, Christopher RW Hall, Ian R Telford, Richard J |
| author_facet | Hoogakker, Babette A A Chapman, Mark R McCave, I Nicholas Hillaire-Marcel, Claude Ellison, Christopher RW Hall, Ian R Telford, Richard J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | High resolution flow speed reconstructions of two core sites located on Gardar Drift in the northeast Atlantic Basin and Orphan Knoll in the northwest Atlantic Basin reveal a long-term decrease in flow speed of Northeast Atlantic Deep Water (NEADW) after 6,500 years. Benthic foraminiferal oxygen isotopes of sites currently bathed in NEADW show a 0.2per mil depletion after 6,500 years, shortly after the start of the development of a carbon isotope gradient between NEADW and Norwegian Sea Deep Water. We consider these changes in near-bottom flow vigor and benthic foraminiferal isotope records to mark a significant reorganization of the Holocene deep ocean circulation, and attribute the changes to a weakening of NEADW flow during the mid to late Holocene that allowed the shoaling of Lower Deep Water and deeper eastward advection of Labrador Sea Water into the northeast Atlantic Basin. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_829499 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table S1) Age determination of sediment cores from the Labrador Sea Hoogakker, Babette A A Chapman, Mark R McCave, I Nicholas Hillaire-Marcel, Claude Ellison, Christopher RW Hall, Ian R Telford, Richard J Age, 14C AMS; Age, calibrated; Age, dated; Age, dated, standard deviation; Age, dated material; Age, maximum/old; Age, minimum/young; BC; Box corer; Calendar age; CALYPSO; Calypso Corer; DEPTH, sediment/rock; Event label; HU91-045-093; IMAGES I; IMAGES V; Laboratory code/label; Labrador Sea; Marion Dufresne (1995); MD101__Campaign; MD114; MD952024; MD95-2024; MD99-2251; Orphan Knoll; Rockall High resolution flow speed reconstructions of two core sites located on Gardar Drift in the northeast Atlantic Basin and Orphan Knoll in the northwest Atlantic Basin reveal a long-term decrease in flow speed of Northeast Atlantic Deep Water (NEADW) after 6,500 years. Benthic foraminiferal oxygen isotopes of sites currently bathed in NEADW show a 0.2per mil depletion after 6,500 years, shortly after the start of the development of a carbon isotope gradient between NEADW and Norwegian Sea Deep Water. We consider these changes in near-bottom flow vigor and benthic foraminiferal isotope records to mark a significant reorganization of the Holocene deep ocean circulation, and attribute the changes to a weakening of NEADW flow during the mid to late Holocene that allowed the shoaling of Lower Deep Water and deeper eastward advection of Labrador Sea Water into the northeast Atlantic Basin. |
| title | (Table S1) Age determination of sediment cores from the Labrador Sea |
| topic | Age, 14C AMS; Age, calibrated; Age, dated; Age, dated, standard deviation; Age, dated material; Age, maximum/old; Age, minimum/young; BC; Box corer; Calendar age; CALYPSO; Calypso Corer; DEPTH, sediment/rock; Event label; HU91-045-093; IMAGES I; IMAGES V; Laboratory code/label; Labrador Sea; Marion Dufresne (1995); MD101__Campaign; MD114; MD952024; MD95-2024; MD99-2251; Orphan Knoll; Rockall |
| url | https://doi.org/10.1594/PANGAEA.829499 |