Pahnke Katharina, Zahn Rainer, Elderfield Henry, Schulz Michael
School of Earth, Ocean and Planetary Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK.
Science. 2003 Aug 15;301(5635):948-52. doi: 10.1126/science.1084451.
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.
为了研究中低纬度地区的快速气候变化，我们建立了西南太平洋百年尺度的古海洋学记录，以便与南极冰芯记录进行详细对比。这些记录表明，在冰消期和间冰期，中低纬度地区与南极气候紧密耦合。冰川部分显示出比南极冰芯更高的变率，这意味着由于环南极环流增强，中高纬度地区气候解耦。冰川部分与格陵兰冰芯记录在结构和时间上具有明显相似性，这表明半球间同步程度超出了两极冰芯相关性预期。
