Doctoral Dissertation Research: Reconstruction of Late Quaternary Paleoclimates of the Central Great Plains Using Magnetic and Nonmagnetic Parameters

博士论文研究：利用磁和非磁参数重建中部大平原晚第四纪古气候

• 批准号: 9508272
• 负责人: William Johnson
• 金额: --
• 依托单位: University of Kansas Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-06-01 至 1996-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9508272&HistoricalAwards=false
• 关键词: Doctoral; Dissertation; Research; Reconstruction; Late

SBR-9508272 William C. Johnson Kyeong Park U. Kansas, Main Campus Doctoral Dissertation Research: Reconstruction of Later Quaternary Paleoclimates of the Central Great Plains Using Magnetic and Non-Magnetic Parameters This dissertation-improvement award supports rock-magnetic analysis, radiocarbon dating, and carbon isotope analysis of materials extracted from two sites in south-central Nebraska. The purpose of the analysis is to reconstruct climate and climate change during the late Quaternary period. The central Great Plains has experienced major climatic and associated environmental change during this period. Little high-resolution climatic proxy record exists for the region, largely reflecting a lack of traditional information sources (such as peat bogs or natural lakes for botanical micro- and macro-fossil analysis). An alternative source of proxy information is available in the nearly continuous loess and paleosol sequences in the region. These will be the sources of the material to be analyzed in the dissertation research. The results will include a high-resolution climatic reconstruction where none currently exists, better parameterization of rock-magnetic measurements, and combination of contrasting proxies in a single climatic record.

9508272威廉·C·约翰逊·约翰逊公园大学堪萨斯州主校区博士论文研究：使用磁性和非磁性参数重建中大平原晚第四纪古气候这篇论文-改进奖支持从内布拉斯加州中南部两个地点提取的材料的岩石-磁性分析、放射性碳测年和碳同位素分析。分析的目的是重建第四纪晚期的气候和气候变化。在此期间，大平原中部经历了重大的气候和相关环境变化。该区域几乎没有高分辨率的气候替代记录，这在很大程度上反映了缺乏传统信息来源(如用于植物微观和宏观化石分析的泥炭沼泽或天然湖泊)。在该地区几乎连续的黄土和古土壤序列中，还有另一种替代信息来源。这些都将是本论文研究要分析的材料来源。其结果将包括目前尚不存在的高分辨率气候重建，岩石磁学测量的更好的参数化，以及在单一气候记录中结合对比的代理。