Late Quaternary glaciations, periglacial and aeolian geomorphic processes as contribution to the paleoclimatic evolution of continual mountains in Western Mongolia (Altay and Khangay)

晚第四纪冰川作用、冰缘和风积地貌过程对蒙古西部连续山脉（阿勒泰和康爱）古气候演化的贡献

• 批准号: 223849325
• 负责人: Dr. Daniela Hülle, since 11/2012
• 金额: --
• 依托单位: Lehrstuhl für Physische Geographie und Geoökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/223849325?language=en
• 关键词: Late; Quaternary; glaciations; periglacial; aeolian

Main aim of the investigation is the extent and causes of late Pleistocene and Holocene glaciations and aeolian cover sediments in the mountain ranges of western Mongolia. The study area concentrates on important sites in the area between the deserts and steppe landscapes of Central Asia and the forest areas of Siberia. Following research question should be investigated: (1) Timing of maximum late Quaternary glaciations. (2) Periods of aeolian sedimentation and paleosols. (3) Regional climatic circulation of the Westerlies and possible monsoonal influences on the (paleo) glaciations and on the sedimentation of loess. To answer this research questions glacial landforms and sediments and aeolian cover sediments will be mapped, sampled, analyzed with sedimentological and pedological methods and dated with radiocarbon and luminescence. A special focus will be placed on the periglacial modification of the different archives. The investigation starts in the modern glaciated Mongolian Altai in the westernmost part of Mongolia towards the Khangay Mountains in the central part of Mongolia regarding the regional differences in elevation, equilibrium altitude elevation and moisture. The results of this study will be correlated with those of other areas of Central Asia to highlight similarities and differences in the regional paleoclimatic evolution.

主要目的是研究蒙古西部山区晚更新世和全新世冰川作用和风成覆盖沉积物的范围和成因。研究区域集中在中亚沙漠和草原景观与西伯利亚森林地区之间的重要地点。需要研究的问题有：(1)晚第四纪最大冰期的时间。(2)风沙沉积期和古土壤期。(3)西风带的区域气候环流及其对古冰川和黄土沉积的可能的季风影响。为了回答这一研究问题，冰川地貌、沉积物和风成覆盖沉积物将被绘制、采样，用沉积学和土壤学方法进行分析，并用放射性碳和发光测定年代。特别的重点将放在不同档案的冰周修改上。从蒙古最西端的现代冰期蒙古阿尔泰到蒙古中部的康格依山脉，考察了海拔高度、平衡海拔高度和湿度的区域差异。本研究结果将与中亚其他地区的研究结果进行对比，以突出区域古气候演化的异同。