ABSTRACT

This study provides mapping of glacial and fluvial geomorphology in the Shaluli Shan region on the eastern margin of the south-eastern Tibetan Plateau. Based on TanDEM-X 12 m elevation data and GoogleEarth imagery, glacial valleys, ice-marginal moraines, glacial lineations, scoured terrain and fluvial terraces were mapped. Covering around 11,000 km², this map is the first for this region to display geomorphology at a spatial resolution of 0.4 arcsec (= c. 11 m) and to include fluvial terraces. Its glacial landform distribution is largely consistent with previous mapping. The substantially higher level of detail in this study is reflected in an approximately tenfold number and smaller median sizes of individual landforms such as moraines and glacial lineations. These results underscore the importance of high-resolution DEM data such as TanDEM-X for the identification of glacial and fluvial geomorphology. The map presented here will be used for detailed paleoglacial reconstructions and landscape evolution studies combining both glacial and fluvial landforms.

摘要

本研究提供了青藏高原东南部东缘沙鲁里山地区冰川和河流地貌的制图。基于 TanDEM-X 12 m 高程数据和 GoogleEarth 图像，绘制了冰川山谷、冰缘冰碛、冰川线、冲刷地形和河流阶地。覆盖约 11,000 公里²，该地图是该地区第一张以 0.4 弧秒 (= c. 11 m) 的空间分辨率显示地貌并包括河流阶地的地图。其冰川地貌分布与以往的测绘大体一致。本研究中显着更高的细节水平反映在单个地貌（如冰碛和冰川线）的大约十倍数量和更小的中值尺寸上。这些结果强调了高分辨率 DEM 数据（如 TanDEM-X）对于识别冰川和河流地貌的重要性。这里展示的地图将用于详细的古冰川重建和结合冰川和河流地貌的景观演变研究。