Glacial lake inventory of High Mountain Asia

The dataset integrated glacier inventory data and 426 Landsat TM/ETM+/OLI images, and adopted manual visual interpretation to extract glacial lake boundaries within a 10-km buffer from glacier terminals using ArcGIS and ENVI software, normalized difference water index maps, and Google Earth images. It was established that 26,089 and 28,953 glacial lakes in HMA, with sizes of 0.0054–5.83 km2, covered a combined area of 1692.74 ± 231.44 and 1955.94 ± 259.68 km2 in 1990 and 2018, respectively. The current glacial lake inventory provided fundamental data for water resource evaluation, assessment of glacial lake outburst floods, and glacier hydrology studies in the mountain cryosphere region.

本数据集整合了冰川编目数据与426景陆地卫星（Landsat）TM/ETM+/OLI影像，采用人工目视解译方法，依托ArcGIS、ENVI软件、归一化差分水体指数（normalized difference water index）图及谷歌地球（Google Earth）影像，提取了冰川末端10千米缓冲范围内的冰湖边界。经统计，高亚洲（High Mountain Asia, HMA）区域内1990年与2018年的冰湖数量分别为26089个与28953个，单湖面积介于0.0054~5.83 km²之间，对应总面积分别为1692.74±231.44 km²与1955.94±259.68 km²。本冰湖编目数据集可为山地冰冻圈区域的水资源评价、冰湖溃决洪水（glacial lake outburst floods）评估及冰川水文研究提供基础数据支撑。

搜集汇总

背景与挑战

背景概述

该数据集提供了高亚洲地区1990年和2018年的冰川湖清单，包含26,089和28,953个冰川湖的边界、面积和属性信息。数据通过人工视觉解释和多种遥感技术结合生成，适用于水资源评估、冰川湖溃决洪水评估和冰川水文研究。