SGER: Is Bolling Warming Recorded by the Southeastern Margin of the Laurentide Ice Sheet?

SGER：劳伦泰德冰盖东南边缘是否记录了博林变暖？

• 批准号: 0511226
• 负责人: Harold Borns
• 金额: --
• 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: 2005
• 资助国家: 美国
• 起止时间: 2005-05-15 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0511226&HistoricalAwards=false
• 关键词: SGER; Bolling; Warming; Recorded; Southeastern

This award, under the auspices of the Small Grants for Exploratory Research (SGER) program, uses funds to increase the chronologic control for the southeastern margin of the Laurentide Ice Sheet (LIS). Ultimately, the researchers want to explore whether they are able to document the response of the ice sheet to major shifts in atmospheric temperature and assess the ability of the ice sheet to produce large volumes of meltwater.The effect of prominent climate events, such as the Bolling warming (13,000 radiocarbon years before present), on the dynamics of the Laurentide Ice Sheet (LIS) remains unknown and yet has important implications for understanding the impact of climate change via glacial meltwater pulses and sea-level changes. The researchers suspect that the abrupt change in style of deglaciation corresponds to the onset of Bolling warmth, but they argue that the current chronology is not sufficient to determine if that is, in fact, the case. Specifically, the researchers want to collect and date fifty (50) new samples of shells and marine algae associated with the coastal moraine belt and the Pineo Ridge End Moraine Complex (PRC). These dates will help bring their chronology of the region up to modern standards and allow them to determine whether or not the changes they see in the glacial record are coeval with regional temperature changes. The project will include an undergraduate student in a research capacity and the data gathered in the course of this research will be incorporated into the literature for Maine's Ice Age Trail (a display of Maine's geologic history along public roads), as well as into classroom and public lectures.The research seems to fit well into the high risk and exploratory nature of the SGER program because it is not a certainty that the researchers can establish a reliable chronology that will be of utility for their scientific interests. A small investment of research funds, however, can help shed light on the science issues.

该奖项是在探索性研究小额赠款（SGER）计划的赞助下，使用资金来增加劳伦泰德冰盖（LIS）东南缘的年代控制。最终，研究人员希望探索他们是否能够记录冰盖对大气温度重大变化的反应，并评估冰盖产生大量融水的能力。（13,000年前的放射性碳），劳伦蒂德冰盖（LIS）的动态目前尚不清楚，但对了解冰川融水脉冲和海平面变化对气候变化的影响具有重要意义。研究人员怀疑，冰川消退方式的突然变化对应于博林温暖的开始，但他们认为，目前的年表不足以确定事实是否如此。具体来说，研究人员希望收集和日期与沿海冰碛带和Pineo Ridge End Moraine Complex（PRC）相关的50个新的贝壳和海藻样本。这些日期将有助于使该地区的年表达到现代标准，并使他们能够确定他们在冰川记录中看到的变化是否与区域温度变化同时代。 该项目将包括一名研究能力的本科生，在这项研究过程中收集的数据将被纳入缅因州的冰河时代小径的文献中（沿着公路展示缅因州的地质历史），这项研究似乎很适合SGER计划的高风险和探索性质，因为它不是一个确定的，研究人员可以建立一个可靠的年表，这将有助于他们的科学兴趣。然而，一小笔研究资金的投资可以帮助阐明科学问题。