Mapping and modeling deglacial ice dynamics and relative sea-level history in Newfoundland

该研究项目主要关注两个主题：1)末次冰期纽芬兰冰盖的历史和动态，从横跨大陆架的退缩到岛屿内部的最终融化；2)纽芬兰附近海平面波动的历史，以响应冰盖的退缩和融化。冰退缩的历史将通过考察和实地测绘从冰盖的前进和后退保存下来的地貌和景观来调查。该提案的一个新重点是将来自内部大陆架的冰川地貌数据（使用声纳测量绘制）与来自航空照片和卫星图像的陆上地貌数据（绘制）结合起来。特别感兴趣的研究课题是纽芬兰冰帽中以前冰流（快速流动的冰川冰）的证据以及冰边缘退缩的时间和模式。研究结果将为理解整个气候变暖时期小型海洋冰盖的行为提供新的潜力，并将立即应用于纽芬兰的矿产勘探行业，因为冰流快速流动下的冰运输距离可能比原先想象的要大。

This research program focuses on two themes: 1) the history and dynamics of the Newfoundland Ice Cap during the last glaciation, from retreat across the continental shelf to final melting in the interior of the island; and 2) the history of sea-level fluctuations around Newfoundland in response to ice cap retreat and melting. Ice retreat history will be investigated through examination and field mapping of landforms and landscapes preserved from ice cap advance and retreat. A new focus in this proposal is to combine glacial landform data from the inner continental shelf, mapped using sonar surveys, with landform data onshore, mapped from aerial photographs and satellite imagery. Topics of particular research interest are the evidence for former ice streams (fast-flowing glacier ice) in the Newfoundland Ice Cap and the timing and pattern of ice-marginal retreat. Results should provide new potential for understanding the behaviour of a small maritime ice cap during an overall period of climate warming and will have immediate application to the mineral exploration industry in Newfoundland because ice transport distances under rapid flow in an ice stream may be greater than originally thought.