Erosional Effects of Climate Change from Single-Clast Be-10

单碎屑 Be-10 气候变化的侵蚀效应

• 批准号: 1049300
• 负责人: Devin McPhillips
• 金额: $ 8.5万
• 依托单位: McPhillips Devin
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1049300&HistoricalAwards=false
• 关键词: Erosional; Effects; Climate; Change; Single

Dr. Devin McPhillips is awarded the NSF Earth Sciences Postdoctoral Fellowship to implement a program of research and education at the University of Vermont. The project's goal is to evaluate how the style and rate of surface erosion responds to glacial-interglacial climate change. The particular focus is on landscapes that were never covered by glacial ice. Dr. McPhillips will compare concentrations of the cosmogenic radionuclide Be-10 from modern stream cobblestones to concentrations in nearby terrace deposits of glacial-stage cobblestones. First, bulk concentrations will be used in a conventional manner to understand the variability of erosion rates in high- and low-order streams. Second, the statistical distribution of individual cobble concentrations will be used to estimate the relative importance of 'deep' versus 'shallow' erosive processes, such as landslides and hillslope diffusion. The results will provide insight into the mechanisms of erosion, including potentially destructive mass movements. Several students will be trained in geomorphology in the course of the project. Dr. McPhillips will co-advise at least one undergraduate student and act as mentor for graduate students at the University of Vermont. The undergraduate(s) will participate in field work and develop a complementary senior thesis project. The senior thesis will provide the student(s) with a strong foundation in research and further the professional development of Dr. McPhillips as teacher as well as a scientist.

德文·麦克菲利普斯博士被授予美国国家科学基金会地球科学博士后奖学金，以实施佛蒙特州大学的一项研究和教育计划。该项目的目标是评估地表侵蚀的方式和速度如何应对冰期-间冰期气候变化。特别关注的是从未被冰川覆盖的景观。麦克菲利普斯博士将把现代溪流鹅卵石上的宇宙源放射性核素Be-10的浓度与附近冰川期鹅卵石阶地沉积物中的浓度进行比较。首先，将以常规方式使用总体浓度，以了解高位和低位河流中侵蚀速率的变异性。其次，鹅卵石浓度的统计分布将被用来估计“深”和“浅”侵蚀过程的相对重要性，例如滑坡和山坡扩散。这些结果将提供对侵蚀机制的洞察，包括潜在的破坏性质量运动。在这个项目的过程中，几名学生将接受地貌学方面的培训。麦克菲利普斯博士将联合指导至少一名本科生，并担任佛蒙特州大学研究生的导师。本科生(S)将参与实地工作，并制定补充高级论文项目。毕业论文将为学生(S)提供坚实的研究基础，并进一步促进麦克菲利普斯博士作为教师和科学家的专业发展。