Collaborative Research: Ice-Core Analysis & Physical Glaciology of the Galena Creek Rock Glacier, Wyoming

合作研究：冰芯分析

• 批准号: 9616776
• 负责人: Noel Potter, Jr.
• 金额: $ 5.59万
• 依托单位: Dickinson College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-04-15 至 2001-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9616776&HistoricalAwards=false
• 关键词: Collaborative; Research; Ice; Core; Analysis

9616776 Potter We propose a comprehensive study of a rock glacier at Galena Creek in the Absaroka Mountains, northwestern Wyoming, to determine the potential of rock glaciers as sources for ice-core paleoclimate records. The Galena Creek rock glacier is one of the most easily-accessible and well-studied glaciological techniques to the Galena Creek rock glacier to determine mass balance, flow characteristics, and internal composition and chemistry. Rock glaciers are ubiquitous features in arctic and alpine regions, yet they have been largely ignored by glaciologists, in part because of the widely-held belief that they are essentially ice-cemented talus. We have demonstrated previously that the Galena Creek rock glacier contains remnant glacier ice that can be retrieved by ice-core drilling. Our project draws on the combined expertise of two glacial-geologists (NP and DC) who have worked extensively with rock glaciers, an ice-core geochemist (ES), and two glaciologists (WP and NH). Geophysics work will include drilling of several boreholes (40-60 meters depth) for deformation measurements, measurement of surface velocities, and retrieval of ice cores. Ice cores will be analyzed for stable isotopes ((18O and (D), electrical conductivity, and visual stratigraphy. Expected results of this work include 1) improved understanding of the climatic context of rock glaciers and 2) evaluation of a new and potentially powerful source of ice-core paleoclimate data.

9616776波特，我们提出了一项全面的研究，对怀俄明州西北部阿巴萨卡山脉的加莱纳克里克（Galena Creek）的岩石冰川进行了全面研究，以确定岩石冰川作为冰核古气候记录的来源的潜力。 Galena Creek Rock冰川是Galena Creek Rock冰川最容易访问和研究的冰川技术之一，可确定质量平衡，流动特征以及内部组成和化学。 岩石冰川是北极和高山地区无处不在的特征，但是冰川学家在很大程度上被冰川忽略了，部分原因是他们坚信它们本质上是冰胶结的距离。 我们以前已经证明，Galena Creek Rock冰川含有残留的冰川冰，可以通过冰核钻孔检索。 我们的项目借鉴了两位冰川地质学家（NP和DC）的综合专业知识，他们与岩石冰川，一名冰核地球化学家（ES）和两位冰川学家（WP和NH）广泛合作。 地球物理学工作将包括钻几个钻孔（40-60米的深度），以进行变形测量，表面速度的测量和冰核的检索。 将分析冰芯的稳定同位素（（（18O和（D），电导率和视觉地层。这项工作的预期结果包括1）提高对岩石冰川气候环境的理解，并评估2）评估新的且潜在强大的冰核古气候数据的来源。