|340,000-Year Centennial-Scale Marine Record of Southern Hemisphere Climatic Oscillation|
340-ky-long d18Oplk and SSTMg/Ca
records from core MD97-2120
compared to the Vostok dD record.
340,000-Year Centennial-Scale Marine Record of Southern Hemisphere Climatic Oscillation
Volume 301, Number 5635, pp. 948-952 (August 15 2003).
Katharina Pahnke and Rainer Zahn *
School of Earth, Ocean and Planetary Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK
* also at: Institució Catalana de Recerca i Estudis Avançats (ICREA) and Facultat de Geologia, Grup de Recerca Consolidat (GRC) en Geociències Marines, Department d' Estratigafia, Paleontologia i Geosciències Marines, Universitat de Barcelona, Campus de Pedralbes, 08028 Barcelona, Spain.
| ABSTRACT: |
|In order to investigate rapid climatic changes at mid-southern latitudes, we have developed centennial-scale paleoceanographic records from the southwest Pacific that enable detailed comparison with Antarctic ice core records. These records suggest close coupling of mid-southern latitudes with Antarctic climate during deglacial and interglacial periods. Glacial sections display higher variability than is seen in Antarctic ice cores, which implies climatic decoupling between mid- and high southern latitudes due to enhanced circum-Antarctic circulation. Structural and temporal similarity with the Greenland ice core record is evident in glacial sections and suggests a degree of interhemispheric synchroneity not predicted from bipolar ice core correlations.|
Download the data from this study:
Foraminiferal d18O, Mg/Ca, and Sea Surface Temperature Reconstruction.
To read or view the full study, please visit the
It was published in Science Volume 301, Number 5635, pp. 948-952 (August 15 2003).
K.P. and R.Z. acknowledge financial support from the Leverhulme Trust, UK, under grant F/407/J. H.E. thanks the Natural Environment Research Council for financial support (grant GR3/1308).
Contact Us |
National Oceanic and Atmospheric Administration
27 August 2003