Steig EJ, Brook EJ, White JWC, Sucher CM, Bender ML, Lehman SJ, Morse DL, Waddington ED, Clow GD
E. J. Steig, J. W. C. White, S. J. Lehman, Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309, USA. E. J. Brook, Department of Geology, Washington State University, Vancouver, WA 98686, USA. C. M. Sucher, Gradua.
Science. 1998 Oct 2;282(5386):92-5. doi: 10.1126/science.282.5386.92.
Central Greenland ice cores provide evidence of abrupt changes in climate over the past 100,000 years. Many of these changes have also been identified in sedimentary and geochemical signatures in deep-sea sediment cores from the North Atlantic, confirming the link between millennial-scale climate variability and ocean thermohaline circulation. It is shown here that two of the most prominent North Atlantic events-the rapid warming that marks the end of the last glacial period and the Bolling/Allerod-Younger Dryas oscillation-are also recorded in an ice core from Taylor Dome, in the western Ross Sea sector of Antarctica. This result contrasts with evidence from ice cores in other regions of Antarctica, which show an asynchronous response between the Northern and Southern Hemispheres.
格陵兰岛中部冰芯提供了过去10万年气候突变的证据。其中许多变化也在北大西洋深海沉积物岩芯的沉积和地球化学特征中得到确认，证实了千年尺度气候变化与海洋热盐环流之间的联系。本文表明，北大西洋最显著的两个事件——标志着末次冰期结束的快速变暖以及博林/阿勒罗德-新仙女木振荡——也记录在南极罗斯海西部泰勒穹顶的一个冰芯中。这一结果与南极其他地区冰芯的证据形成对比，后者显示南北半球之间存在不同步响应。
