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.

该奖项用于支持一项为期一年的小额探索性研究资助（SGER），以检验一种假设，即碎冰和锚冰在流入亚极地海水的冰川融水中形成，并形成可与温带和极地沉积物区分开来的沉积物。冰川环境。 拟议的研究旨在寻找和记录冰川末端形成的碎冰和锚冰并在沉积物运输中发挥作用，风险很高，但如果成功，这项研究将确定沉积物扩散的重要新机制，从而引领道路加深对南极冰锋过程的了解。 实地研究将包括 (1) 使用 ROV 潜水器进行视频调查，以检测碎冰和锚冰并研究冰川终点，(2) CTD 剖面、水样和沉积物陷阱，以研究扩散和沉积过程，以及3）底层核心以文件记录这些过程。