Sea surface temperature record of ODP Site 202-1233

We present the first high-resolution alkenone-derived sea surface temperature (SST) reconstruction in the southeast Pacific (Ocean Drilling Program Site 1233) covering the major part of the last glacial period and the Holocene. The record shows a clear millennial-scale pattern that is very similar t...

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Bibliographic Details
Main Authors: Kaiser, Jérôme, Lamy, Frank, Hebbeln, Dierk
Format: Dataset
Language:English
Published: PANGAEA 2005
Subjects:
202-1233
Center for Marine Environmental Sciences
COMPCORE
Composite Core
Joides Resolution
Leg202
MARUM
Ocean Drilling Program
ODP
South-East Pacific
Antarctic
Pacific
The Antarctic
Antarc*
Antarctica
Sea ice
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.737972
https://doi.org/10.1594/PANGAEA.737972
Description
Summary:We present the first high-resolution alkenone-derived sea surface temperature (SST) reconstruction in the southeast Pacific (Ocean Drilling Program Site 1233) covering the major part of the last glacial period and the Holocene. The record shows a clear millennial-scale pattern that is very similar to climate fluctuations observed in Antarctic ice cores, suggesting that the Southern Hemisphere high-latitude climate changes extended into the midlatitudes, involving simultaneous changes in air temperatures over Antarctica, sea ice extent, extension of the Antarctic Circumpolar Current, and westerly atmospheric circulation. A comparison to other midlatitude surface ocean records suggests that this "Antarctic" millennial-scale pattern was probably a hemisphere-wide phenomenon. In addition, we performed SST gradient reconstructions over the complete latitudinal range of the Pacific Eastern Boundary Current System for different time intervals during the last 70 kyr. The main results suggest an equatorward displaced subtropical gyre circulation during marine isotope stages 2 and 4.

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