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确定大冰体的规模以及对气候变化的快速反应具有重要的意义 ,这是因为冰的体积变化会导致全球海平面变化。为了更准确地预测南极冰盖的未来情况 ,非常有必要对大气成分与现在类似的时期的冰盖波动记录进行研究。有人认为２１世纪大气中的ＣＯ２ 含量会达到自上新世（约３～４Ｍ
Determining the size of a large body of ice and its rapid response to climate change is of great importance because changes in the volume of ice can cause changes in the global sea level. In order to predict more accurately the future of the Antarctic ice sheet, it is necessary to study the record of the ice sheet fluctuation during the similar composition of atmospheric composition to that of the present. Some people think that the atmosphere in the 21st century, the CO2 content will reach the Pliocene (about 3 ~ 4M