A High-Resolution Case History: The Loch Lomond Ice Sheet in the Scottish Highlands

高分辨率案例历史：苏格兰高地的洛蒙德湖冰盖

• 批准号: 9118375
• 负责人: Harold Borns
• 金额: $ 11.4万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-01 至 1995-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118375&HistoricalAwards=false
• 关键词: Resolution; Case; History; Loch; Lomond

This research is designed to document a high-precision record of terrestrial responses to the widespread and rapid ocean/atmosphere reorganization in and around the North Atlantic Ocean during the Younger Dryas Chronozone of the last deglaciation (11,000-10,000 years ago). The chronology and rates of change in vegetation and association climate during the Younger Dryas will be documented for land areas adjacent to the late-glacial Loch Lomond ice sheet over the Scottish Highlands. An AMS 14C chronology of changing paleo-vegetation will be used to document the timing of terrestrial biotic responses as a kind of bioassay for the rapid reorganization of the North Atlantic. In turn, lags in growth and dissipation of the ice sheet will be determined and cross- calibrated with the climate record from Scotland, Ireland and the North Atlantic. Results of this work will define the boundary conditions needed to develop and test several numerical models of growth and response of ice-sheet to major, abrupt, and transient climate shifts of the past and future. One such model of ice-sheet dynamics will be developed and tested as part of the project.

这项研究旨在记录末次冰消期新仙女木时区（11,000-10,000 年前）期间北大西洋及其周围广泛而快速的海洋/大气重组的陆地响应的高精度记录。 新仙女木期期间，苏格兰高地洛蒙德湖冰原附近的陆地区域将记录新仙女木期植被和相关气候变化的年代和速率。 AMS 14C 古植被变化年表将用于记录陆地生物反应的时间，作为北大西洋快速重组的一种生物测定。 反过来，冰盖增长和消散的滞后将被确定，并与苏格兰、爱尔兰和北大西洋的气候记录进行交叉校准。 这项工作的结果将定义开发和测试冰盖生长以及对过去和未来重大、突然和短暂气候变化的响应的几个数值模型所需的边界条件。 作为该项目的一部分，将开发和测试这样一个冰盖动力学模型。