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.

调查的主要目的是研究蒙古西部山脉晚更新世和全新世冰川和风沙覆盖沉积的范围和原因。研究区域集中在中亚沙漠和草原景观与西伯利亚林区之间的重要地点。应研究的问题有：(1)晚第四纪最大冰期的形成时间。(2)风沙沉积和古土壤时期。(3)西风带区域气候环流及季风对古冰川和黄土沉积的可能影响。为了回答这一研究问题，将绘制冰川地貌、沉积物和风成覆盖沉积物的地图，对其进行采样，用沉积学和土壤学方法进行分析，并用放射性碳法和发光法测定年代。将特别关注对不同档案的冰缘修改。从蒙古最西端的现代冰期蒙古人阿拉泰开始，到蒙古中部的坎盖山，研究其海拔、平衡海拔高度和湿度的地区差异。这项研究的结果将与中亚其他地区的结果进行对比，以突出区域古气候演变的异同。