雅鲁藏布江溃决洪水沉积的数字表面高程模型：曼曲-羊卓雍措（2021）

重建雅江流域堵江灾害链的过程，对深入认识自然状态下冰-河-湖水文地貌体系的自然属性及其演化规律具有重要意义。本数据为科考过程中获取的数字地表高程模型，数据来源为无人机倾斜摄影，由实时差分GPS（RTK）控制点校正；垂直分辨率5cm、水平分辨率20cm。该数据可以用于辅助识别曼曲典型河段溃决洪水沉积物（溃决洪水丘陵、砾石丘、巨砾心滩等）的空间展布以及堰塞坝体的位置，获取断面高程，是恢复溃决洪水规模的第一手资料。Reconstructing the dammed river disaster chain in the Yalong River Basin is of great significance for deeply understanding the natural attributes and evolutionary laws of the glacier-river-lake hydrological and geomorphological system under natural conditions. This dataset is a digital surface model (DSM) obtained during field surveys, derived from unmanned aerial vehicle (UAV) oblique photography and corrected with real-time kinematic GPS (RTK) control points, with a vertical resolution of 5 cm and a horizontal resolution of 20 cm. This dataset can assist in identifying the spatial distribution of outburst flood sediments (including outburst flood hills, gravel mounds, boulder mid-channel bars, etc.) in typical reaches of the Manqu River, as well as the locations of barrier dam bodies, and obtain cross-sectional elevations, serving as primary data for reconstructing the scale of outburst floods.

搜集汇总

背景与挑战

背景概述

该数据集提供了雅鲁藏布江曼曲-羊卓雍措地区2021年溃决洪水沉积的高精度数字表面高程模型，垂直和水平分辨率分别为5cm和20cm，可用于洪水沉积物空间展布和堰塞坝体位置的研究。数据来源于无人机倾斜摄影，经RTK控制点校正，是恢复溃决洪水规模的重要资料。