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

该奖项由探索研究小额赠款(SGER)计划赞助，利用资金加强对劳伦蒂冰盖(LIS)东南边缘的年代学控制。最终，研究人员希望探索他们是否能够记录下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。突出的气候事件，如博林变暖(比现在早13,000个放射性碳年)对劳伦特冰盖(LIS)的动态的影响仍然未知，但对于理解通过冰川融水脉冲和海平面变化而产生的气候变化的影响具有重要意义。研究人员怀疑，冰川消融方式的突然变化与博林变暖的开始相对应，但他们认为，目前的年表不足以确定事实是否如此。具体地说，研究人员想要收集五十(50)个新的贝壳和海藻样本，这些贝壳和海藻与沿海冰雹带和松树岭末端冰原复合体(PRC)有关。这些日期将帮助他们将该地区的年代学提高到现代标准，并使他们能够确定他们在冰川记录中看到的变化是否与地区温度变化同步。该项目将包括一名研究能力的本科生，在研究过程中收集的数据将被纳入缅因州冰河时代步道(缅因州沿公共道路的地质史的展示)的文献中，以及课堂和公共讲座中。这项研究似乎很适合SGER项目的高风险和探索性，因为研究人员是否能建立可靠的年表对他们的科学兴趣是有用的并不确定。然而，一小笔研究资金的投资可以帮助人们了解科学问题。

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.