Authigenic uranium, mass accumulation rates, benthic δ¹³C and SST during the last interglacial period of ODP Site 177-1094
Fuente:
PANGAEA
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2014
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867169511819444224 |
|---|---|
| author | Hayes, Christopher T Martínez-García, Alfredo Hasenfratz, Albin Jaccard, Samuel L Hodell, David A Sigman, Daniel M Haug, Gerald H Anderson, Robert F |
| author_facet | Hayes, Christopher T Martínez-García, Alfredo Hasenfratz, Albin Jaccard, Samuel L Hodell, David A Sigman, Daniel M Haug, Gerald H Anderson, Robert F |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently also occurs in warm climates. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_839454 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Authigenic uranium, mass accumulation rates, benthic δ¹³C and SST during the last interglacial period of ODP Site 177-1094 Hayes, Christopher T Martínez-García, Alfredo Hasenfratz, Albin Jaccard, Samuel L Hodell, David A Sigman, Daniel M Haug, Gerald H Anderson, Robert F 177-1094; COMPCORE; Composite Core; Joides Resolution; Leg177; Ocean Drilling Program; ODP; South Atlantic Ocean Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently also occurs in warm climates. |
| title | Authigenic uranium, mass accumulation rates, benthic δ¹³C and SST during the last interglacial period of ODP Site 177-1094 |
| topic | 177-1094; COMPCORE; Composite Core; Joides Resolution; Leg177; Ocean Drilling Program; ODP; South Atlantic Ocean |
| url | https://doi.org/10.1594/PANGAEA.839454 |