Relation between Basal Water and Sliding in a Large Tidewater Glacier

大型潮水冰川中基础水与滑动的关系

• 批准号: 8619352
• 负责人: Barclay Kamb
• 金额: $ 41.22万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-15 至 1989-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8619352&HistoricalAwards=false
• 关键词: Relation; between; Basal; Water; Sliding

This award is in support of a program of field measurements of Columbia Glacier, Alaska, to establish the relationships by which basal water pressure and volume of water accumulated at the bed influence the basal sliding velocity of the glacier. Columbia glacier is grounded well below sea level in a fjord;recently it began retreating rapidly while calving icebergs at an increased rate into Prince William Sound. It provides a unique opportunity to study the relationships between fast glacier flow and subglacier water. Dr. Kamb and his colleagues will measure subglacial water pressure in bore holes drilled to the bottom of the glacier, and to correlate variations in water pressure with variations in surface velocity. Surface velocity, water balance, and meteorological observations will be made simultaneously by Dr. Mark F. Meier and his colleagues (companion proposal DPP

该奖项是为了支持阿拉斯加哥伦比亚冰川的实地测量项目，以建立基础水压和底部积累的水量对冰川基本滑动速度的影响关系。哥伦比亚冰川位于峡湾的海平面以下；最近，它开始迅速退缩，冰山以更快的速度崩解到威廉王子湾。它提供了一个独特的机会来研究冰川快速流动和冰川下水之间的关系。Kamb博士和他的同事们将测量冰川底部钻孔的冰下水压，并将水压的变化与地表流速的变化联系起来。地表速度、水平衡和气象观测将由马克·f·迈耶博士和他的同事同时进行（同伴提案DPP）