340,000-year centennial-scale marine record of Southern Hemisphere climatic oscillation

Publication Type  Journal Article
Year of Publication  2003
Authors  Pahnke, K.; Zahn, R.; Elderfield, H.; Schulz, M.
Journal Title  Science
Volume  301
Issue  5635
Pages  948-952
Journal Date  Aug 15
ISBN Number  0036-8075
Accession Number  ISI:000184755900034
Key Words  sea-surface temperature; last glacial period; new-zealand; north-atlantic; ice-core; southwest pacific; field intensity; water masses; chatham rise; sw pacific

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.


711RYTimes Cited:66Cited References Count:39

URL  <Go to ISI>://000184755900034