Predicted age-depth scales for Siple Dome and inland WAIS ice cores in west Antarctica
Predicted age-depth scales for Siple Dome and inland WAIS ice cores in west Antarctica
复制标题
南极洲西部 Siple Dome 和内陆 WAIS 冰芯的预测年龄深度尺度
DOI：
10.1029/96gl03101
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发表时间：
1996
影响因子：
5.2
通讯作者：
H. Jacobson
中科院分区：
文献类型：
--
作者：
N. Nereson;E. Waddington;C. Raymond;H. Jacobson
利用地球物理资料，结合冰流模型和广义堆积史，估计了西南极两个预期冰芯地点的年龄和年层厚度随深度的变化：西南极冰盖上的一个内陆地点和西南极冰盖上的一个内陆地点。这项模拟实验预测，在这两个地点，104年的冰层深度为∼的50%，105年的冰层深度为∼的90%。这两个岩芯都可能包含上一次冰川周期的气候信息，年分辨率通过全新世。两个冰芯在分辨率和记录长度方面预测的相似性表明，可以对它们进行详细比较，以获得有关西南极冰盖古气候和历史的时空信息。
Geophysical data are used with ice flow models and generalized accumulation histories to estimate age and annual layer thickness versus depth for two anticipated ice core sites in West Antarctica: Siple Dome (81.65°S, 148.81°W) and an inland site on the West Antarctic Ice Sheet (WAIS). This modeling experiment predicts that 104 year-old ice is at ∼50% depth and 105 year-old ice is at ∼90% depth at both sites. Both of these cores could contain climate information through the last glacial cycle with annual resolution through the Holocene. The predicted similarity in resolution and record length between the two cores suggests that they could be compared in detail to obtain both spatial and temporal information about the paleoclimate and history of the West Antarctic ice sheet.