Doctoral Dissertation Research: Effects of Glacial- Interglacial Climate Change on Mass Wasting, Southeastern Minnesota

SBR-9506564 James C.诺克斯·约瑟夫·A威斯康星州梅森大学麦迪逊分校论文改进研究：冰川-间冰期气候变化对物质消耗的影响，明尼苏达州东南部这个项目将调查冰川-间冰期气候变化对明尼苏达州东南部一部分山坡侵蚀过程的影响，该地区在末次冰期期间靠近冰缘。 研究结果应该适用于上密西西比河谷的更大面积的地形相似。 该项目将检验这样一种假设，即在最后一次冰期期间，永久冻土层的形成触发了物质消耗造成的大规模斜坡侵蚀，但物质消耗在随后的间冰期气候条件下并不活跃。 放射性碳测年和其他方法将用于确定过去大规模浪费事件的时间顺序。 这项研究的结果将加强对过去25,000年来密西西比河上游盆地沉积物运动和储存的大规模变化的解释。 )

SBR-9506564 James C. Knox Joseph A. Mason University of Wisconsin at Madison Dissertation Improvement Research: Effects of Glacial-Interglacial Climate Change on Mass Wasting, Southeastern Minnesota This project will investigate the effects of glacial-interglacial climate change on processes of hillslope erosion in a part of southeastern Minnesota that was near the ice margin during the last glacial period. Study results should be applicable to a larger area of the Upper Mississippi Valley that is physiographically similar. The project will test the hypothesis that extensive slope erosion by mass wasting was triggered by permafrost formation during the last glacial period, but that mass wasting has been inactive under subsequent interglacial climatic conditions. Radiocarbon dating and other methods will be used to determine the chronology of past mass wasting episodes. The results of the study should enhance interpretation of large-scale changes in sediment movement and storage in the Upper Mississippi basin over the past 25,000 years. )