格尔木-那曲、共和-玉树高等级公路沿线10km缓冲区地形数据

本数据为青藏高等级公路格尔木-那曲、共和-玉树沿线10km缓冲区的地形数据。数据原始数字高程模型（DEM）为30m分辨率的ASTER GDEM（Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model），对该DEM进行投影转换预处理，然后通过青藏高等级公路10km缓冲区边界进行剪裁。基于该DEM在ArcGIS软件中提取了坡度、坡向及地形起伏，地形起伏搜索范围为半径2.5km的圆型。该数据可以为青藏公路地质灾害孕灾背景及风险评价的研究提供数据基础。This dataset comprises topographic data within the 10 km buffer zones along two segments of the Qinghai-Tibet expressway: Golmud to Naqu and Gonghe to Yushu. The original digital elevation model (DEM) is the 30 m resolution ASTER GDEM (Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model). Preprocessing including projection transformation was performed on this DEM, followed by clipping using the boundaries of the aforementioned 10 km buffer zones. Slope, aspect, and topographic relief were extracted from the processed DEM via ArcGIS software, with a circular search scope of 2.5 km radius adopted for the calculation of topographic relief. This dataset can serve as a reliable data foundation for research on the disaster-inducing background and risk assessment of geological disasters along the Qinghai-Tibet expressways.