2016年冈底斯山冰川矢量数据集

A dataset of glacial vector in the Gangdisê Mountains in 2016

冈底斯山(29°14′–33°42′N,78°52′–90°03′E)横贯西藏自治区西南部,西起喀喇昆仑山东南部的萨色尔山脊,东至纳木错西南与念青唐古拉山西段衔接,山体呈西北–东南走向,大致与喜马拉雅山平行,是青藏高原和欧亚大陆南缘最为醒目的构造单元之一。冈底斯山西段属极大陆型冰川分布区,东段属亚大陆型冰川分布区,该区域的冰川变化对水资源有重要影响。本数据集基于修订后的中国第一、二次冰川编目数据,2015–2016年Landsat遥感影像和ASTER GDEM高程数据,提取2016年冈底斯山冰川矢量数据,并增加了冰川编码、名称、流域等相关信息。本数据集反映了2015–2016年冈底斯山的冰川分布情况,可作为该区域冰川变化、气候变化等研究的基础数据。

The GangdisêMountains(29°14′–33°42′N,78°52′–90°03′E)extend across the southeastern part of the Tibet Autonomous Region.Starting at Sassel Ridge in the south-eastern part of the Karakorum in the west and ending at the southwest part of the Namco in the east,the GangdisêMountains connect to the western part of the Nyainqetanglha Range.The GangdisêMountains are roughly parallel to the Himalayas and have a NW-SE trend.The GangdisêMountains are one of the most striking tectonic units in the southern margin of the Tibetan Plateau and Eurasia.The glacial types in the GangdisêMountains include polar glaciers in the western part and continental glaciers in the eastern part.This GangdisêMountains glacier dataset was developed by integrating several data sources:the revised First Chinese Glacier Inventory(FCGI),the Second Chinese Glacier Inventory(SCGI),Landsat OLI images for 2015–2016 and ASTER GDEM.At the same time,the information of glacier coding name,basin and so on was added to it.The dataset reflects the glacier distributions in the GangdisêMountains from 2015 to 2016,and can be used as the fundamental data for research on the glacier and climate changes in the region.