1959-2016年中国阿尔泰山冰川长度数据集

A dataset of glacier length in Chinese Altay Mountains from 1959 to 2016

阿尔泰山位于亚洲中部和新疆最北端,是我国冰川发育纬度最高的地区。阿尔泰山地区冰川属亚大陆型,受全球气候变暖影响,该区域冰川退缩剧烈。本数据集基于中国阿尔泰山地区两次冰川编目数据、2016年Landsat OLI遥感影像及数字高程模型(DEM)等相关数据,提取不同时期该地区冰川中流线,继而获得逐条冰川长度信息。数据集包含两个文件:1)基于Landsat OLI遥感影像及数字高程模型提取的2016年中国阿尔泰山冰川编目矢量数据;2)基于中流线方法提取的1959年、2006年、2016年中国阿尔泰山冰川中流线矢量数据。本数据集反映了1959–2016年中国阿尔泰山地区冰川长度变化信息,可作为区域冰川变化、气候变化等研究的基础数据。

The Altay Mountains is situated in the northernmost part of Xinjiang Uygur Autonomous Region and has numerous glaciers in the highest latitude in China.Glaciers in this region had been experiencing dramatic recessions due to global warming.Based on the First Chinese Glacier Inventory(FCGI),the Second Chinese Glacier Inventory(SCGI),Landsat OLI images and SRTM DEM(V4.1),the centerlines of glaciers in different periods were extracted using GIS technology,then their main geometrical parameters(e.g.,the maximum of lengths or the mean of lengths)were obtained.This dataset includes two parts:1)glacier boundary vector files in 2016 in Chinese Altay Mountains;2)glacier centerlines vector files in 1959,2006 and 2016 in Chinese Altay Mountains.This dataset can reflect the changes of glaciers in Chinese Altay Mountains from 1959 to 2016 and has important values for some studies such as regional glacier changes,climate changes,etc.