Topographic relief and climate-tectonics-erosion interactions in the Pamir Mountains, Tajikistan

塔吉克斯坦帕米尔山脉的地形起伏和气候-构造-侵蚀相互作用

• 批准号: 365656695
• 负责人: Dr. Konstanze Stübner
• 金额: --
• 依托单位: Institut für Ionenstrahlphysik und Materialforschung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/365656695?language=en
• 关键词: Topographic; relief; climate; tectonics; erosion

Although glacial records in the Pamir Mountains, Central Asia, go back >200,000 years, the glacial chronology of the Pamir remains poorly constrained. Highly dispersed age data impede reliable dating of old glacial deposits, and most published data are from a relatively small area in the easternmost part of the mountain belt. In the framework of the first project, we used cosmogenic nuclide exposure age dating to reconstruct the Middle and Late Pleistocene glacial history of the Pamir. We constrained the timing and extent of large glacial advances and demonstrated regional synchroneity of the glacial stages as well as asynchroneity with global glacial cycles. We also conducted comprehensive geomorphologic analyses, which elucidate the effects of glaciation on landscape evolution and erosion patterns in the Pamir. The objective of the present proposal is the synthesis and publication of the age data collected and processed during the past 2 years and the finalization of computer modelling studies to further understand glacial coverage in the Pamir. This will need additional analyses and numerical modelling, which will result in a comprehensive assessment of the glacial history and a better understanding of tectonic and climatic controls on erosion in the Pamir mountains.

尽管中亚帕米尔山脉的冰川记录可以追溯到> 20万年前，但帕米尔冰川年代学仍然缺乏约束。高度分散的年龄数据阻碍了古老冰川沉积物的可靠测年，大多数已发表的数据来自山区最东部的一个相对较小的地区。在第一个项目的框架内，我们利用宇宙成因核素暴露年龄重建了帕米尔中、晚更新世冰川历史。我们限制的时间和规模的大冰川的进步，并证明了区域同步性的冰川阶段，以及与全球冰川周期的同步性。我们还进行了全面的地貌分析，阐明了冰川对景观演变和侵蚀模式在帕米尔高原的影响。本提案的目的是综合和公布过去两年收集和处理的年龄数据，并完成计算机模拟研究，以进一步了解帕米尔冰川覆盖情况。这将需要更多的分析和数字建模，从而全面评估冰川历史，更好地了解帕米尔山脉侵蚀的构造和气候控制。