The Role of Frazil Ice and Anchor Ice in Sedimentation in Subpolar Glacial Marine Environments, Antarctica

冰片和锚冰在南极洲亚极地冰川海洋环境沉积中的作用

• 批准号: 9218495
• 负责人: Norman Smith
• 金额: $ 2.03万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9218495&HistoricalAwards=false
• 关键词: Role; Frazil; Ice; Anchor; Sedimentation

This award is for support of a one-year Small Grant for Exploratory Research (SGER) to test an hypothesis that frazil ice and anchor ice form in glacial meltwater flowing into subpolar marine water and form deposits that may be distinguishable from deposits of temperate and polar glacial environments. The proposed study to search and document that frazil and anchor ice form at the termini of glaciers and play a role in sediment transport is high risk, but if successful, this study will have identified a significant new mechanism of sediment dispersal, thus leading the way to an increased understanding of ice-front processes in the Antarctic. The field-based study will consist of (1) video surveys with an ROV submersible to detect frazil and anchor ice and to study the glacier terminus, (2) CTD profiles, water samples and sediment traps to study processes of dispersal and sedimentation, and 3) bottom cores to document the record of these processes.

该奖项是为了支持为期一年的探索性小额赠款 研究（SGER），以检验一个假设，即冰和锚 冰川融水流入副极地海水中形成冰 并形成可以与 温带和极地冰川环境。 拟议的研究， 搜寻并记录在终点处形成碎冰和锚冰 冰川和发挥作用的沉积物运输是高风险的，但 如果成功，这项研究将确定一个重要的新的 沉积物分散的机制，从而导致一个 增加了对南极冰锋过程的了解。 基于实地的研究将包括（1）视频调查， 潜水器，以探测断裂和锚冰，并研究 冰川终点，（2）CTD剖面、水样和沉积物 研究扩散和沉积过程的陷阱，以及3） 底部岩心来记录这些过程。