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

尽管中亚帕米尔山脉的冰川记录可以追溯到20万年前，但帕米尔冰川的年代学仍然很有限。高度分散的年龄数据阻碍了对古冰川沉积物的可靠测年，而且大多数已发表的数据来自山带最东端相对较小的区域。在第一个项目的框架内，我们采用宇宙核素暴露年龄法重建了帕米尔高原的中晚更新世冰川史。我们限制了大冰川推进的时间和范围，并证明了冰川阶段的区域同步性以及与全球冰川旋回的不同步性。我们还进行了全面的地貌分析，阐明了冰川作用对帕米尔高原景观演变和侵蚀模式的影响。本建议的目标是综合和出版过去两年中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高原的冰川覆盖范围。这将需要额外的分析和数值模拟，这将导致对冰川历史的全面评估，并更好地了解帕米尔山脉侵蚀的构造和气候控制。

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.