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

合作研究：怀俄明州方铅矿溪岩石冰川的冰芯分析和物理冰川学

• 批准号: 9710061
• 负责人: Neil Humphrey
• 金额: $ 16.2万
• 依托单位: University of Wyoming
• 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 2002-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9710061&HistoricalAwards=false
• 关键词: Collabortiave; Research; Ice; Core; Analysis

9710061 Humphrey 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.

小行星9710061 我们提出了一个全面的研究在加莱纳溪在阿布萨罗卡山脉，西北怀俄明州，以确定潜在的岩石冰川冰芯古气候记录的来源。 方铅矿溪岩石冰川是最容易获得和研究的冰川学技术之一，以确定方铅矿溪岩石冰川的质量平衡，流动特性，内部成分和化学。 岩石冰川在北极和高山地区随处可见，但它们在很大程度上被冰川学家所忽视，部分原因是人们普遍认为它们本质上是冰胶结的堆积物。 我们以前已经证明，方铅矿溪岩石冰川含有残余的冰川冰，可以通过冰芯钻探检索。 我们的项目借鉴了两个冰川地质学家（NP和DC）的综合专业知识，他们广泛研究岩石冰川，冰芯地球化学家（ES）和两个冰川学家（WP和NH）。 地球物理学工作将包括钻几个钻孔（40-60米深），用于变形测量、表面速度测量和冰芯检索。 将分析冰芯的稳定同位素（18 O和D）、电导率和可视地层学。 这项工作的预期成果包括：1）提高对岩石冰川气候背景的理解; 2）评估一个新的、潜在的强大的冰芯古气候数据来源。