Kara Sea Ice Dome of the Eurasian Ice Sheet: Taimyr Peninsula Record

该奖项支持美国与俄罗斯和瑞典冰川地质学家合作的一个项目，该项目旨在测试以喀拉海为中心的全新世冰穹是否存在。这个假设的圆顶可以解释海平面上升最多17米的原因，因此它存在的问题对全新世气候模型具有重要意义。然而，它的存在是一个极具争议的问题。该项目的目标是对喀拉海边缘最北端的陆生冰碛复合体进行严格限制的放射性碳年代测定。这项工作将特别集中在俄罗斯迪克森以东的地区，那里是列尼瓦亚河与北部泰米尔冰碛的交汇处。为了确定喀拉海地区在最后一个冰河时期是否可能存在冰穹，需要对冰碛物进行准确的年代测定。如果支持冰穹的存在，那么这项工作也将是制定进一步工作以充分表征冰穹的关键。该项目的结果有望帮助解决一个重要而有争议的问题，即上一个冰河时期冰盖的性质和范围。

9419532 Prentice This award supports a US contribution to a collaborative project with Russian and Swedish glacial geologists to test the existence of an hypothesized Holocene ice dome centered on the Kara Sea. This hypothesized dome could account for a maximum of 17 meters of sea level rise and so the question of its existence has important implications for models of Holocene climate. However, its existence is a highly contentious question. The goal of the project is to produce well constrained radiocarbon ages of the northernmost terrestrial moraine complex along the margin of the Kara Sea. The work will specifically focus on the area east of Dikson, Russia, where the Leneevaya River intersects the northern Taimyr moraine. Accurate ages of the moraines are required in order to determine if an ice dome is likely to have existed in the Kara Sea region during the last ice age. If the existence of the ice dome is supported, then this work would also be key to formulating further work to fully characterize the dome. The results of this project are expected to help resolve an important and contentious question about the nature and extent of ice sheets during the last ice age.