Sensitivity of the Antarctic Ice Sheet to Late Quaternary Climat Change

该奖项旨在支持一个项目，该项目旨在通过罗斯湾的最后一个冰川循环评估南极冰盖和古气候演变的机制。将对精心挑选的野外地区的冰川地质和同位素年代学进行详细检查，以检验罗斯海湾在末次盛冰期存在大量或有限的接地冰的假设。将这一地质记录与麦克默多穹核的冰芯冰川化学相结合，将产生第一个同位素定年的南极古气候曲线。这些信息将有助于解开冰原演化的重要古气候强迫，评估需要快速、同步全球变化的冰期气候动力学假设，以及测试南极西部冰原对气候变化的敏感性。

This award is for support of a project to assess mechanisms of Antarctic ice-sheet and paleoclimatic evolution through the last glacial cycle in the Ross Embayment. Detailed examination of the glacial geology and isotope chronology of carefully selected field areas will be undertaken in order to test hypotheses of extensive or limited grounded ice in the Ross Embayment at the last glacial maximum. Intergration of this geologic record with ice-core glaciochemistry from the McMurdo Dome core will produce the first isotopically dated Antarctic paleoclimatic curve. This information will allow disentanglement of important paleoclimatic forcings of ice sheet evolution, evaluation of hypotheses of ice-age climate dynamics requiring rapid, synchronous global change, and tests of the sensitivity of the West Antarctic ice sheet to climate change.