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加拿大北极群岛(CAI)以及格陵兰的森楚里营(CC)和Dye-3的冰岩心底层冰的证据表明,在比100ka还早的末次间冰期期间,格陵兰冰盖发生了大范围或完全消融,这与早先的解释大不相同。以前人们认为,底层冰中杂质微粒的存在表明,冰盖底层发生过消融,这些冰开始形成的时间证据已遭破坏。然而,当冰帽和冰盖的面积大大缩小时,这些微粒极可能被风吹到冰盖面上来。冰的结构、气体含量和其它证据也表明,每个钻孔位的底层冰为重叠冰,是冰帽或冰盖早期生长阶段的一种典型的冰类型。如果现代冰层是在末次间冰期期间开始生长的,那么在较早(伊利诺斯冰期)形成的冰盖必定在末次间冰期的较早阶段就已全部或大部分消融了。如果这种消融事件确实发生了,那么就象有人曾指出的那样,桑加门间冰期期间的海平面比现在高6m这种变化就不应归因于西南极冰盖的崩解。
Evidence from the base ice of the Canadian Arctic Archipelago (CAI) and the Senkuri Camps (CC) and Dye-3 in Greenland shows that extensive or complete ablation of the Greenland ice sheet occurred during the last interglacial period that preceded 100ka , Which is very different from the earlier explanation. It was previously thought that the presence of impurity particles in the ground ice suggests that the underlying ice sheets have been ablated and the evidence of the onset of ice formation has been destroyed. However, when the area of the ice cap and ice sheet is greatly reduced, the particles are most likely to be blown to the ice sheet by the wind. The structure of the ice, its gas content and other evidence also show that the underlying ice at each borehole is a superimposed ice and is a typical type of ice in the early stages of ice caps or ice sheets. If modern ice began to grow during the last interglacials, the ice sheets formed earlier (in the Illinois Ice Age) must have been totally or largely ablated at an earlier stage of the last interglacial. If this ablation event does occur, then, as one has already pointed out, the change in sea level during the Sangkamen glacial period, which is 6 m above sea level, should not be attributed to the collapse of the western Antarctic ice sheet.