High-precision measurements of the inter-annual evolution for Urumqi Glacier No.1 in eastern Tien Shan,China

作     者：ChunHai Xu ZhongQin Li JianXin Mu PuYu Wang FeiTeng Wang ChunHai Xu;ZhongQin Li;JianXin Mu;PuYu Wang;FeiTeng Wang

作者机构：State Key Laboratory of Cryospheric Science/Tien Shan Glaciological StationNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China National Cryosphere Desert Data CenterNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2021年第13卷第6期

页      面：474-487页

核心收录：

学科分类：07[理学] 08[工学] 081501[工学-水文学及水资源] 0705[理学-地理学] 0815[工学-水利工程] 070501[理学-自然地理学] 

基　　金：This study was supported by the National Natural Science Foundation of China(42001067) Natural Science Foundation of Gansu Province(21JR7RA059) National Cryosphere Desert Data Center(20D03) National Natural Science Foundation of China(41771077) the Strategic Priority Research Program of Chinese Academy of Sciences(XDA20020102) Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0201) State Key Laboratory of Cryospheric Science(SKLCS-ZZ-2021) 

主　　题：glacier thickness change front variation supra-glacial drainage pathway long-range terrestrial laser scanning(TLS) climate change 

摘      要：High-precision measuring of glacier evolution remains a challenge as the available global and regional remote sensing techniques cannot satisfactorily capture the local-scale processes of most small-and medium-sized mountain *** this study,we use a high-precision local remote sensing technique,long-range terrestrial laser scanning(TLS),to measure the evolution of Urumqi Glacier No.1 at an annual *** found that the dense point clouds derived from the TLS survey can be used to reconstruct glacier surface terrain,with certain details,such as depressions,debris-covered areas,and supra-glacial drainages can be *** glacier experienced pronounced thickness thinning and continuous retreat over the last four mass-balance years(2015−2019).The mean surface slope of Urumqi Glacier No.1 gradually steepened,which may increase the removal of glacier *** glacier was deeply incised by two very prominent primary supra-glacial rivers,and those rivers presented a widening *** networks of supra-glacial channels had a significant impact on accelerated glacier mass ***-precision measuring is of vital importance to understanding the annual evolution of this type of glacier.