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

这一奖项是为了支持为期一年的小额探索研究补助金(SGER)，以检验一种假设，即在流入亚极地海水的冰川融化水中形成脆冰和锚冰，并形成可能与温带和极地冰川环境的沉积相区别的沉积。关于冰层和锚冰在冰川末端形成并在沉积物运输中发挥作用的拟议研究风险很高，但如果成功，这项研究将确定沉积物扩散的一种重要新机制，从而使人们更好地了解南极的冰锋过程。实地研究将包括：(1)使用ROV潜水器进行视频调查，以探测冰川和锚冰并研究冰川末端；(2)CTD剖面、水样和沉积物捕捉器，以研究扩散和沉积过程；以及3)海底岩芯，以记录这些过程。

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.