Glaciology of Blue Ice Areas in Antarctica

南极洲蓝冰区的冰川学

• 批准号: 0229245
• 负责人: Gordon Hamilton
• 金额: $ 4.38万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0229245&HistoricalAwards=false
• 关键词: Glaciology; Blue; Ice; Areas; Antarctica

A 'horizontal ice core' was collected at the Mount Moulton blue ice field in West Antarctica and preliminary analyses of the sample material suggests that a ~500 kyr climate record is preserved in the ice at this site. This award will contribute to the understanding of the Mt Moulton record by assessing the potential for ice-flow induced deformation of the stratigraphic profile. In addition, this award builds on the recognition of blue ice areas as archives of long climate records by conducting reconnaissance studies for a potential horizontal ice core location at the Allan Hills in East Antarctica. The objectives of this project are to contribute to the glaciological understanding of blue ice areas in Antarctica. Ice flow conditions at the Mt Moulton blue ice field will be studied to assess the possibility that the stratigraphic record has been deformed and reconnaissance of a potential horizontal ice core site in the Allan Hills blue ice field will also be accomplished. Short field programs will be undertaken at each location to collect relevant measurements of ice flow and subglacial topography, and to conduct sampling of material that will enable the preservation of the stratigraphic sequences to be assessed.

在南极洲西部的莫尔顿山蓝冰场收集了一个“水平冰芯”，对样品材料的初步分析表明，该地点的冰中保存了约500 kyr的气候记录。该奖项将有助于通过评估冰流引起的地层剖面变形的可能性来了解莫尔顿山的记录。此外，该奖项还通过对南极洲东部艾伦山潜在水平冰芯位置进行勘测研究，将蓝冰区视为长期气候记录的档案。该项目的目标是促进对南极洲蓝冰地区的冰川学了解。 将研究莫尔顿山蓝冰场的冰流条件，以评估地层记录变形的可能性，并将完成对艾伦山蓝冰场潜在水平冰芯地点的勘察。将在每个地点进行短期实地项目，收集有关冰流和冰下地形的测量数据，并进行材料取样，以便能够对地层序列的保存情况进行评估。