Sea surface temperature estimates and alkenone C37:4 abundances in ODP Site 145-882 and 177-1090 ...

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-Pleisto...

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Bibliographic Details
Main Authors: Martínez‐García, Alfredo, Rosell-Melé, Antoni, McClymont, Erin L, Gersonde, Rainer, Haug, Gerald H
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2010
Subjects:
Composite Core
Piston corer BGR type
Leg145
Leg177
ANT-XI/2
Joides Resolution
Polarstern
International Polar Year 2007-2008 IPY
Ocean Drilling Program ODP
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Antarc*
Antarctic
International Polar Year
IPY
Online Access:https://dx.doi.org/10.1594/pangaea.771708
https://doi.pangaea.de/10.1594/PANGAEA.771708
Description
Summary: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. ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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