Sea surface temperature estimates and alkenone C37:4 abundances in ODP Site 145-882 and 177-1090
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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2010
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| _version_ | 1867171362040184832 |
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| author | Martínez-García, Alfredo Rosell-Melé, Antoni McClymont, Erin L Gersonde, Rainer Haug, Gerald H |
| author_facet | Martínez-García, Alfredo Rosell-Melé, Antoni McClymont, Erin L Gersonde, Rainer Haug, Gerald H |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The cold upwelling 'tongue' of the eastern equatorial Pacific is a central energetic feature of the ocean, dominating both the mean state and temporal variability of climate in the tropics and beyond. Recent evidence for the development of the modern cold tongue during the Pliocene-Pleistocene transition has been explained as the result of extratropical cooling that drove a shoaling of the thermocline. We have found that the sub-Antarctic and sub-Arctic regions underwent substantial cooling nearly synchronous to the cold tongue development, thereby providing support for this hypothesis. In addition, we show that sub-Antarctic climate changed in its response to Earth's orbital variations, from a subtropical to a subpolar pattern, as expected if cooling shrank the warm-water sphere of the ocean and thus contracted the subtropical gyres. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_771708 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sea surface temperature estimates and alkenone C37:4 abundances in ODP Site 145-882 and 177-1090 Martínez-García, Alfredo Rosell-Melé, Antoni McClymont, Erin L Gersonde, Rainer Haug, Gerald H 145-882; 177-1090; Agulhas Ridge; ANT-XI/2; AWI_Paleo; COMPCORE; Composite Core; International Polar Year (2007-2008); IPY; Joides Resolution; KL; Leg145; Leg177; North Pacific Ocean; Ocean Drilling Program; ODP; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Piston corer (BGR type); Polarstern; PS2489-2; PS28; PS28/256; South Atlantic Ocean The cold upwelling 'tongue' of the eastern equatorial Pacific is a central energetic feature of the ocean, dominating both the mean state and temporal variability of climate in the tropics and beyond. Recent evidence for the development of the modern cold tongue during the Pliocene-Pleistocene transition has been explained as the result of extratropical cooling that drove a shoaling of the thermocline. We have found that the sub-Antarctic and sub-Arctic regions underwent substantial cooling nearly synchronous to the cold tongue development, thereby providing support for this hypothesis. In addition, we show that sub-Antarctic climate changed in its response to Earth's orbital variations, from a subtropical to a subpolar pattern, as expected if cooling shrank the warm-water sphere of the ocean and thus contracted the subtropical gyres. |
| title | Sea surface temperature estimates and alkenone C37:4 abundances in ODP Site 145-882 and 177-1090 |
| topic | 145-882; 177-1090; Agulhas Ridge; ANT-XI/2; AWI_Paleo; COMPCORE; Composite Core; International Polar Year (2007-2008); IPY; Joides Resolution; KL; Leg145; Leg177; North Pacific Ocean; Ocean Drilling Program; ODP; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Piston corer (BGR type); Polarstern; PS2489-2; PS28; PS28/256; South Atlantic Ocean |
| url | https://doi.org/10.1594/PANGAEA.771708 |